Questions Asked on
February 19, 2013

algebra
Can someone check my answers on exploring conic sections? 1. Graph x2 + y2 = 9. What are its lines of symmetry? Every line through the center is a line of symmetry. The yaxis and the xaxis are lines of symmetry.( my choice) Every line through the center
asked by Lee 
Math  Quadratic
Rearrange this expression into quadratic form, ax2 bx c = 0 .2= ((x^2)/(55x)) where a = 1, and identify the values of b and c.
asked by Anonymous 
Chem
A solution of H2SO4(aq) with a molal concentration of 8.01 m has a density of 1.354 g/mL. What is the molar concentration of this solution?
asked by Jhanvi 
physics
A 0.145kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 38 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let
asked by m 
Chemistry
The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centimeter of Cr? As a solid, Cr adopts a bodycentered cubic unit cell. How many unit cells are present per cubic centimeter of Cr?
asked by Stephanie 
Math 6th grade
Story Problem  Factoring An "A" train leaves a subway station every 13 minutes. An "E" train leaves evry 9 minutes. If both trains just left the station on parallel tracts, when will both leave the station together again?
asked by Najmah 
math
A bottle of juice holds 3/8 gallon when it is full, if 1/3 of the juice has been poured out, how much juice is left? Is this subtracting fractions or multiplying??
asked by sonny 
chemistry
If 53.62 ml of an oil weighs 48.34 g, what is the specific gravity of the oil?
asked by rose 
Chem
Determine the concentrations of K2SO4, K , and SO42– in a solution prepared by dissolving 2.84 × 10–4 g K2SO4 in 2.25 L of water. Express all three concentrations in molarity. Additionally, express the concentrations of the ionic species in parts per
asked by Jhanvi 
math
In third grade... Write an equation comparing test scores of 88 and 97. (Use a box for missing number) do you know how to answer this?
asked by john 
Statistic
Heights of adult men have a mean of 69.0 inches and a standard deviation of 2.8 inches. Approximately what percentage of adult men have a height between 66.2 and 77.4 inches? Must show the number and the empirical rule
asked by Theresa 
chemistry
Suppose of copper (II) nitrate is dissolved in of a aqueous solution of sodium chromate. Calculate the final molarity of nitrate anion in the solution. You can assume the volume of the solution doesn't change when the copper (II) nitrate is dissolved in
asked by madison 
Math
2. Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. a. 324 cm^3 b. 108 cm^3 c. 36 cm^3 d. 152 cm^3
asked by Batman 
Chemistry
Which of the following solutes in aqueous solution would be expected to exhibit the smallest freezingpoint lowering (assuming ideal behavior? 0.1 m NaCl .2 m CH3COOH .05 m Al2(SO4)3 .1 m MgCl2 .25 m NH3 What would be the steps to picking the right option?
asked by Marcus 
reading
Snow was quickly piling up on the ground. Wind howled through the trees. Karen wrapped a blanket around her and sighed as she watched the snow through her bedroom window. In this passage, you can best infer that A. Karen is at home during a snowstorm. B.
asked by Anonymous 
MATH HELP: Volumes of Pyramids and Cones
This is my last question in Math. :p 9. Find the volume of a rectangular prism with the following dimensions: Length = 5 mm Base = 7 mm Height = 3 mm a. 142 mm^3 b. 105 mm^3 c. 126 mm^3 d. 130 mm^3
asked by Batman 
Chemistry
1) Frank and Oswalt report a molar absorptivity of 4700 L mol^1 cm^1 for thiocyanatoiron(lll) ion. What absorbance would you expect for a soloution that it 1.0e4 M in thiocyanatorion(lll) ion, if the path length is 1.00 cm? 2) At a given temperature,
asked by Joe 
Algebra
A sports team is building a new stadium on a rectangular lot of land. If the lot measures 6x by 10x and the sports field will be 1x by 4x, how much of the lot will be left over to build bleachers on? 56x^2 64x^2 30x^2 60x^2 I just need someone to explain
asked by Cassie 
Chemistry
If the pH of a solution is 6, what are the hydrogen and hydroxideion concentrations? The PH of a 0.1 M MCl (M+ is an unknown cation) was found to be 4.7. Write the net ionic equation for the hydrolysis of M+ and its corresponding equilibrium expression
asked by Jefferson 
Accounting
Dividing Partnership Income Desmond Drury and Ty Wilkins have decided to form a partnership. They have agreed that Drury is to invest $140,700 and that Wilkins is to invest $60,300. Drury is to devote full time to the business, and Wilkins is to devote
asked by Jayde M. 
physics
Cliﬀ divers at Acapulco jump into the sea from a cliﬀ 37.1 m high. At the level of the sea, a rock sticks out a horizontal distance of13.39 m. The acceleration of gravity is 9.8 m/s^2. With what minimum horizontal velocity must the cliﬀ divers leave
asked by emma 
physics
In a thundercloud there may be an electric charge of 54 C near the top of the cloud and −54 C near the bottom of the cloud. If these charges are separated by about 4 km, what is the magnitude of the electric force between these two sets of charges? The
asked by hannah 
Math
given these equations: x+y=9.0 0.5x+.2y=3.0 find the values of x and y
asked by Anonymous 
pgcc
A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. A).Find the pressure of I2 when the system returns to equilibrium. B).Find the pressure of I when the
asked by ben1987 
reading
1. Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4. Netta and Jim refused to discuss the issue of free trade. Which of the four
asked by Anonymous 
Algebra
A family is having a pool built in their backyard. If their yard is rectangular and measures 7x by 6x and the pool is circular with a radius of 2x how much of the yard will be left over after the pool is built? A.38x2 B.42x2 – 4x2 C.42x2 – 2x2 D.38x2 I
asked by Cassie 
College Finance
1.A recent edition of The Wall Street Journal reported interest rates of 10.75 percent, 11.10 percent, 11.48 percent, and 11.75 percent for 3, 4, 5, and 6year Treasury security yields, respectively. According to the unbiased expectation theory of the
asked by Jona 
trig
An object Is propelled upward at an angle θ, 45° < θ
asked by Anonymous 
Math
Sandra makes a pizza .she puts mushrooms on 2/6 of the pizza .she adds green peppers to 5/8 of the pizza.which topping covers more of the pizza?
asked by Pietro 
Chem 212
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.1 g, and its initial temperature is 13.3 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.3 °C. How much
asked by 1231az 
physics 12
a certain binary star system consists of two stars of masses m and 3m respectively separated by a distance of 1.5 x 10^12 m, measured between their centres. Theres stars revolve in sync with each other around their common centre of mass like a giant
asked by James 
Statistics
In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on the final exam. There are 100 points available for each score. However, the lab score is worth 15% of your total grade, each major
asked by Maria 
Physics
A 10.0kg object experiences a drag force due to air resistance. The magnitude of this drag force depends on its speed, and obeys the equation Fdrag =(12.0 Ns/m)v + (4.00 Ns2/m2)v2. (a) What is the terminal speed of this object if it is falling due to
asked by Stehlin 
Chemistry
Which of the following mixtures of KCl in water is a saturated solution and which is an unsaturated solution; 1)100g of KCl in 100mL of H2O at 40°C 2)50g of KCl in 100mL of H2O at 70°C 3) 120g of KCl in 100mL of H2O at 60°C My data is: Temperature82°C
asked by Lori 
Math
Tricia read 1/4 of her book on Monday. On Tuesday, she read 36% of the book. On Wednesday, she read 0.27 of the book. She finished the book on Thursday. What percent of the book did she read on Thursday?
asked by Betsy 
World History
What is the significance of Horace Mann? My answer: He helped reform education in the 1800's and convinced states to pay taxes for public education.
asked by Victoria 
chem
A flask is charged with 1.596 atm of N2O4(g) and 1.008 atm of NO2(g) at 25°C, and the following equilibrium is achieved. N2O4(g)> 2 NO2(g) After equilibrium is reached, the partial pressure of NO2 is 0.504 atm. (a) What is the equilibrium partial
asked by Hannah 
chemistry
mass of crucible 26.4574g mass of crucible and hydrated sample 27.7617g mass of hydrated sample 1.3043g mass of crucible and dehydrated sample 27.5693g mass of dehydrated sample 1.1119g mass of filter paper 0.7089g mass of filter paper and copper
asked by Johny 
Statistics
Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12ounce can. However, the actual amount of soda poured into each can is not exactly 12 ounces; it varies from can to can. It has been observed
asked by Steven 
physics
If the 60kg player is running forward at 7.0m/s when she makes contact with the dummy, what is the players velocity at the end of the 1.20s impact?
asked by Steve 
Math 10
A water sprinkler sprays in a circular a distance of 10 ft. What is the circumference of the spray? I got 31.4 ft. Is that right??
asked by Marco 
Physics
Highspeed stroboscopic photographs show that the head of a 212 g golf club is traveling at 29.8 m/s just before it strikes a 45.9 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 21.8 m/s. Find the speed
asked by Kelley 
Spanish
Can you help me unscramble these two words? ngtialceoo, birol
asked by Joseph 
college algebra
19841994 the equation the number of aids cases can be modeled by the equation C(x)=3034x^2+14,018x+6400 X represents years after 1984 estimate the year when 200,000 aids cases had been diagnosed.
asked by Anonymous 
physics
Two positive charges of 6.83 µC each are 673 cm apart. Find the electric ﬁeld midway between them. The value of the Coulomb constant is 8.98755 × 10 9 N · m2 /C 2 .
asked by Anonymous 
Math
The first social studies test had 16 questions. The second test had 220% as many questions as the first test. Find the number of questions on the second test.
asked by Betsy 
science
A uranium and iron atom reside a distance R = 28.70 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized. Calculate the distance r from the uranium atom necessary for an electron to reside in equilibrium. Ignore the insignificant
asked by Kels 
finance
How long will it take $2,000 to reach $4,800 when it grows at 12 percent per year? (Do not round intermediate calculations and round your final answer to 2 decimal places.) I need help solving this problem, can i see it worked out?
asked by steve 
physics
Bill kicks a rock oﬀ the top of his apartment building. It strikes a window across the street 12 m away. The acceleration of gravity is 9.8 m/s^2. If the window is 16 m below the position where Bill contacted the rock, how long was it in the air?
asked by emma 
Physics ~ CONSERVATION OF MOMENTUM ~
1.) A 10,000 kg railroad car traveling at a speed of 24.0 m/s strikes an identical car at rest. If the cars lock together as a result of the collision, what is their common speed afterward? 2.) A 3.0 kg ball at 3 m/s and strikes a 1.5 kg ball moving at 2
asked by Isis 
Physics
A car is traveling at 66.9 mi/h on a horizontal highway. The acceleration of gravity is 9.8 m/s2. If the coefficient of friction between road and tires on a rainy day is 0.13, what is the minimum distance in which the car will stop? (1 mi = 1.609) Answer
asked by dallas 
college algebra
19841994 the equation the number of aids cases can be modeled by the equation C(x)=3034x^2+14,018x+6400 X represents years after 1984 estimate the year when 200,000 aids cases had been diagnosed.
asked by Anonymous 
Chemistry
Which of the following pure liquids is the best solvent for sodium fluoride? CCl4 C2C6 HCl BCl3 or PCl5 My guess would be either CCl4 or C2C6, I need to know the reasoning behind the correct answer.
asked by Marcus 
Math quest 2
If a triangular sail has a vertical height of 83 ft. And horizontal length of 40 ft, what is the area of the sail? I got area : 3,320ft squared
asked by Marco 
math
Find the exponential function f(x)=Ca^x whose graph goes through the points (0,3) and (2,12).
asked by Rachel 
science
A 2.75gram air inflated balloon is given an excess negative charge, q1 = 3.00 × 108 C, by rubbing it with a blanket. It is found that a charged rod can be held above the balloon at a distance of d = 5.80 cm to make the balloon float. In order for this
asked by Kels 
science
Which of the following gives off more energy than it absorbs? melting ice, burning propane in a gas heater, sublimation of carbon dioxide to carbon dioxide gas, recharging a car battery
asked by lidia 
english
Which one of the following statements contains a similie ? A: the maple wears a gayer scarf B: I think that I shall never see a poem lovely as a tree C: the woods went up in flame. D: the soaring bird quickly disappeared from our sight.
asked by Anonymous 
Statistics
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.
asked by Dawn 
World Geography
Latin America and North America 1. The _______ were responsible for the forced migration of more people from Africa than any other colonial power. A. Portuguese B. Dutch C. Spanish D. British 2. Regarding tropical rainforests, the term evapotranspiration
asked by Dale 
physica
If a certain spring stretches 4.32221 cm when a load of 15.3617 N is suspended from it, how much will the spring stretch if it is cut in half and 18.2451 N is suspended from it?
asked by keisha 
physics
a particle completes 4 revolution/sec on a circular path of radius 0.25m.calculate angular velocity
asked by saina 
Chemistry
Consider the following equilibrium at 395K: NH4HS(s) NH3(g) + H2S(g) The partial pressure of each gas is 0.265 atm. Calculate Kc for the reaction.
asked by Susan 
science
A uranium and iron atom reside a distance R = 28.70 nm apart. The uranium atom is singly ionized; the iron atom is doubly ionized. Calculate the distance r from the uranium atom necessary for an electron to reside in equilibrium. Ignore the insignificant
asked by Kels 
science
There are two identical, positively charged conducting spheres fixed in space. The spheres are 44.6 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0675 N. Then, a thin conducting wire connects the spheres,
asked by Kels 
Math
The jars of paint in the art room are full of different amounts of paint.the green paint jar is 2/8 full.the purple 4/6 full.wich color jar has more paint.
asked by Pietro 
Math
Edwards walked 3/4 mile from his home to the park .then he walked 2/4 mile from the park to the Library.which of the two distances is greater?
asked by Pietro 
Chemistry
Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system:
asked by Anonymous 
math
The area of a rectangular garden is given by the trinomial 2x squared + 2x  84. What are the possible dimensions of the rectangle?
asked by Mya 
Algebra
3x^8 – 7x^8 A.4x^16 B.–21x^8 C.–4x^8 D.10x^8 I think this is C...just making sure you don't add the exponents...?
asked by Cassie 
Math
In one year, Melinda grew 2 1/4 inches to 48 3/8. What was her height at the beginning of the year?
asked by Tasha 
Physics
A 5.0 Ω resistor, a 9.0 Ω resistor, and a 10.0 Ω resistor are connected in parallel across a 24.0 V battery. What is the equivalent resistance of the circuit? Answer in units of Ω
asked by Kai 
math
In third grade... Write an equation comparing test scores of 88 and 97. (Use a box for missing number) do you know how to answer this?
asked by john 
Physics  Tension
Two blocks are connected by a string and are pulled vertically upward by a force of 165 N applied to the upper block. (here is a rough diagram) ^ (F=165 N) I [block] (
asked by Wes 
SCIENCE Biology (urgent)
1.Do organisms benefit from being classified as a different species?How? 2.Importance of classifying organisms.. I;m not good in science...
asked by daphnie 
Electronics
How long does it take to fully charge a 5µF capacitor in series witha 5 Mega Ohm resistor
asked by Matt, AGAIN 
Physics
A straight path is inclined at an angle of 15 degree to the horizontal. A loaded skip of total mass 1500 kg is at rest on the path and is attached to a wall at the top of the path by a rope. The rope is taut and parallel to a line of greatest slope of the
asked by Josep 
Please Help Me
Use the equation for the synthesis of hydrogen to answer the following. C (s) + H2O (l) > CO (g) + H2 (g) deltaH = + 31.3 kcal/mol carbon deltaS = +32 cal/(mol•K) Calculate the energy change (deltaH) when 5.00 g of carbon is consumed. Calculate the
asked by John 
Physics
A loaded penguin sled weighing 60 N rests on a plane inclined at 20° to the horizontal. Between the sled and the plane the coefficient of static friction is 0.27, and the coefficient of kinetic friction is 0.13. (a) What is the minimum magnitude of the
asked by Rachel 
Science
Please check my answers? My textbook won't load, so i've had to use google and guess. 1. Scientists hypothesize that the sun formed ____. (1 point) less than a billion years ago **from a cloud of gas and dust less than a million years ago from a chunk of
asked by Ava 
Chemistry
The decomposition of ozone may occur through the twostep mechanism shown below: step 1 O3 > O2 + O step 2 O3 + O > 2O2 The oxygen atom is considered to be: a catalyst or reaction intermediate? How am I supposed to be able to tell the difference
asked by Marcus 
PHYS
You are watching water waves pass a tide gauge fastened to the end of a pier. At their highest the crests reach a mark labeled 3.8 m, and at the low point, you can just see the 3.2 m mark. What is the amplitude of the waves?
asked by Jim 
reading
Except for a few pigeons, Central Park was deserted. Mist hung above the chilled grass. Patches of old snow, scattered here and there, looked like white puddles. The sun hung just above the horizon, casting red and orange streaks across lowhanging clouds.
asked by Anonymous 
World history; Check:P
Write a opinion paper on the most significant consequences of the Agricultural Revolution. This is about 10,000 yearsago. One of the greatest consequence was that the population increased. The increase of population lead to the need of more clothing.
asked by Unknown 
Chemistry
Given the following functions, answer the questions: Temperature (°C) Kw 0 1.1410−15 25 1.0010−14 35 2.0910−14 40. 2.9210−14 50. 5.4710−14 Is the autoionization of water exothermic or endothermic? (b) What is the pH of pure water at 35°C? (c)
asked by Margaret 
physics
A steam engine’s boiler completely converts 151 kg of water to steam. This process in volves the transfer of 4.8786 J J as heat. If steam escaping through a safety valve does 1.66 × 108 J of work expanding against the outside atmosphere, what is the
asked by scott 
PLEASE HELP!!! ALGEBRA
A bank teller is counting the total amount of money in a cash register at the end of the day. There is a total of $2600 in denominations of $1, $5, $10 and $20 dollar bills. The total number of paper bills is $235. The number of twenty dollar bills is
asked by Jona 
Calculus II
For some constants A and B, the rate of production, R(t), of oil in a new oil well is modelled R(t)=A+Be^(t)sin(2πt) where t is the time in years, A is the equilibrium rate, and B is the "variability" coefficient. Find the total amount of oil produces in
asked by Patricia 
PHYS
What is the frequency of a sound wave whose vibrations occur 5 x 10^3 sec apart?
asked by paul 
Statistics
Cola Corporation produces Orange Cola. The filling machines are adjusted to pour 12 ounces of soda into each 12ounce can. However, the actual amount of soda poured into each can is not exactly 12 ounces; it varies from can to can. It has been observed
asked by Steven 
math
An 18 kg mass is placed st one end of a steel bar that is 1 m long. A 35 kg mass is placed at the other end. Where should the fulcrum be placed to balance the bar?
asked by Stacey 
Pre Calculus
A bank teller is counting the total amount of money in a cash register at the end of the day. There is a total of $2600 in denominations of $1, $5, $10 and $20 dollar bills. The total number of paper bills is $235. The number of twenty dollar bills is
asked by Jona 
statistics
A high school counselor wants to examine whether the teenage pregnancy rate at her school is different from the rate nationwide. She knows that the rate nationwide is 15 %. She randomly selects 80 female students from her high school. She finds that 9 out
asked by Dennis 
chemistry lab
A volume of water delivered using a buret has a mass of 2.67 g. What was the final volume reading on the buret if the inital volume reading was 0.10 ml? [assume the density of water is 1.00g/mL]ml
asked by kim 
Statistics
A candidate for a political office claims that he will win the election. A poll is conducted, and 35 of 150 voters indicate that they will vote for the candidate, 100 voters indicate that they will vote for his opponent, and 15 voters are undecided. a.
asked by Dawn 
Physics
A block weighing 5.7 N requires a force of 2 N to push it along at constant velocity. What is the coefficient of friction for the surface?
asked by jason 
Chemistry
Which of the following solutes, dissolved in 1000g of water, would provide a solution would the lowest freezing point? .030 mol of BaCl2, CO(NH2)2, CaSO4, CH3COOH, or .030 mol of NH4NO3 Again, the steps needed to determine for the freezing point.
asked by Marcus 
AP Physics B
A soap bubble of index of refraction 1.43 strongly reflects both the red and the green components of white light. What minimum film thickness allows this to happen? (In air,the wavelength of red light is 703 nm, of green light 502.143 nm.) Answer in units
asked by Daisy 
Physics
The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 1.8 x 1011 F and a variable inductance. If the antenna is intended to
asked by HELP !!!! 
geography
are Chile, Argentina, and Brazil the only countries that share a border with Bolivia and Paraguay?
asked by Blaze 
calc
the base of s is a elliptical region with boudary cuvrve 16x^2 +16y^2 =4. cross sections perpandicular to the x axis are isosceles right triangles with hypotenuse in the base. find the volume of s
asked by mike 
Social Studies
What country has the lowest population density in Northern Africa and Southwest Asia and what religions originated in this area? Libya and the religions that originated there are Islam and Sunni Islam?
asked by Jerald 
Precalculus
Jana hit a golf ball with an initial velocity of 102 feet per second at an angle of 67° with the horizontal. After 2 seconds, how far has the ball traveled horizontally?
asked by Becca 
Guidance and Discipline
Which one of the following statements about lying is true.
asked by Sandra 
math
solve for x in the following expression using the quadratic formula 3x^2 + 29x  8.5=0
asked by Anonymous 
calculus
I need help with this problem: The path traveled by a golf ball with a 9iron can be modeled with the quadratic equation, y= 0.042xsquared + 5x, where x is the distance in yards from the point it was hit and y is the height of the golf ball in feet.
asked by Don 
Math
Let S(n) denote the sum of digits of the integer n. Over all positive integers, the minimum and maximum values of S(n)/S(5n) are X and Y, respectively. The value of X+Y can be written as a/b , where a and b are coprime positive integers. What is the value
asked by John 
Chemistry
Determine if the solubility would increase, decrease, or stay the same: 1) A saturated solution of sugar water is cooled from room temp to 0 degrees Celsius. 2) A solution of ocean water with dissolved oxygen is heated from 10 degrees Celsius to 15 degrees
asked by Margaret 
American government
The congressional lawmaking process is biased toward: A. Bold new initiatives rather than small adjustments in existing legislative programs B. National interests at the expense of local ones. C. Blocking legislation rather than passing it. D.
asked by NeNe 
physics
A 10g bullet of unknown speed is shot horizontally into a 2kg block of wood suspended from the ceiling by a cord. The bullet hits the block and becomes lodged in it. After the collision, the block and the bullet swing to a height 30cm above the original
asked by Arogundade 
Math
Jan has a recipe for bread.she uses 6/8 cup of flour and 1/3 cup of chopped onion.which ingredients does she use more of,flour or onions?
asked by Pietro 
Physics
Bruno drags a box with a mass of 50kg along a frictionless floor by pulling the box with 18N at an angle 40° above the horizontal. What is the net work done on the box if the displacement of the box is 10.5m?
asked by Tianna 
Physics Please
The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 1.8 x 1011 F and a variable inductance. If the antenna is intended to
asked by HELP !!!! 
Physics
A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the
asked by Rachel 
Math 9
2 planes leave the airport at the same time. Minutes later plane A is 70 miles due north of the airport. Plane B is 168 miles due East of the airport. How far apart are the 2 airplanes. ? I think 98 miles apart. Is that right?
asked by Marco 
algebra
a survey of 70 customers was taken at a bookstore regarding the type of books purchased. the survey found that 42 customers purchased mysteries,35 purchased science fiction, 28 purchased romance novels,19 purchased mysteries and sicence fiction, 15
asked by Anonymous 
science
There are two identical, positively charged conducting spheres fixed in space. The spheres are 44.6 cm apart (center to center) and repel each other with an electrostatic force of F1 = 0.0675 N. Then, a thin conducting wire connects the spheres,
asked by Kels 
World History (Ms. Sue)
What is the significance of temperance movement? My answer is the temperance movement of the 19th and early 20th centuries was an organized effort to encourage moderation in the consumption of intoxicating liquors or press for complete abstinence. Is this
asked by Victoria 
algebra
real world situation a problem describing incresing then constant and finally decreasing
asked by matthew 
Math
2k+7=5kk
asked by Tony 
Math
An airplane traveled from Boston to Las Vegas making a stop in St. Louis. The plane traveled 2410 miles altogether, which is 230% of the distance from Boston to St. Louis. Find the distance from Boston to St. Louis to the nearest mile.
asked by Betsy 
Chemistry
What is the % M/M concentration of 5.00 mL of methanol in 25 g solution of methanol in water? The density of methanol is 0.791 g/mL. The density of water is 1.000 g/mL. What is the % V/V concentration for the solution? Please show work.
asked by Margaret 
reading
Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! for the world, which seems To lie before us like a land of dreams, So various, so beautiful,
asked by Anonymous 
US HISTORY
WHAT WAS THE PANIC OF 1887
asked by jj 
science
A 10g sample of radioactive substances is lift to decay for five halflives. How much of the radioactive substance remains?
asked by mirian hernandez 
prealgrebra
What is the missing coefficient x 2 4x 2x x 2 ______ x
asked by justin 
Chemistry Naming compounds Nomenclature
i am having trouble with this compound. Molybdenum (VI) Chromate I'm have it find its formula and can't seem to get it. Thanks for the help.
asked by Rob 
Math word problem
A fire and rescue squads places a 15 ft ladder against a burning building. If he ladder is 9ft from the building how far up will the ladder reach? I got 17.5 ft Is that right?
asked by Marco 
Chemistry
What volume in liters would contain 5.30 x 1024 molecules of hydrogen gas at STP?
asked by Bay 
Chemistry
What volume in liters would contain 5.30 x 10^24 molecules of hydrogen gas at STP?
asked by Bay 
math
. A bag contains 3 marbles: a red one, a white one, and a green one. Suppose that two marbles are selected without replacement. (a) How many outcomes are in the sample space? List them (b) What is the probability that a red marble, and then a green marble
asked by James 
Literature
Which statement is true about how the firstperson point of view in Narrative of the Life of Frederick Douglass affects the reader? (Points: 3) The reader is given only facts without any emotions. The reader sees the external and internal struggle of an
asked by Princess752 
randhills college life orientation
3 environmental health hazard that cause ill health, crises, and or disasters within your community or any other community within south Africa and globally?
asked by kabelo 
Physics
A 1250 kg boat is traveling at 90 km/h when its engine is shut off. The magnitude of the frictional force fk between boat and water is proportional to the speed v of the boat. Thus, fk = 80v, where v is in meters per second and fk (the magnitude of the
asked by Rachel 
Math 9
A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the
asked by Molly 
Sociology
Evaluate the impact the Sociological theories, Functionalism, Conflict, and Interactionism has by choosing one of the social institution selected from the list below: Social Institutions (choose one) family healthcare religion education mass media
asked by Shel 
geometry
A tower casts a shadow of 64 feet. A 6 foot tall pole near the tower casts a shadow 8 feet long. How tall is the tower?
asked by Ally 
Physics
A block weighing 5.7 N requires a force of 2 N to push it along at constant velocity. What is the coefficient of friction for the surface?
asked by ryan 
World History (Ms. Sue)
What is the significance of labor union? My answer is labor union is significant because the major importance of a labor union is to organize the workers in order to make available a organization to negotiate a collective bargaining agreement with the
asked by Victoria 
Science
What vocabulary term causes iron to rust
asked by Carter 
math
A man pulls a rope over a simple pulley attached to the bow of a rowboat. The man’s hands are 8 feet above the water and the bow of the boat is 1 foot above the water. How fast must the man pull the rope to tow the boat in at 3 feet per second when it is
asked by jonh 
Pre Cal
Sec^2 2u1/Sec^2 2u = Sin^2 2u
asked by Lisa 
math
A trough is 2 feet wide and 8 feet long with a crosssection that is triangular (equilateral). Water is being pumped in at 2 gallons per minute. How fast is the depth rising when it is 3 inches deep? How fast is the depth rising when it is 6 inches deep?
asked by jonh 
Algebra
simplify: [(2x^2+5x6)/(5x^2+7x6)]*[(20x^27x3)/(6x^225x+4)]/[(4x^211x3)/(6x^219x+3)]
asked by Jeconiah 
Chemistry
Another proposed mechanism problem: H2O2 + I > H2O +IO slow H2O2 + IO > H2O + O2 + I fast Which of the following statements in incorrect? a.) IO is a catalyst b.) I is a catalyst c.) The net reaction is 2H2O2 > 2H2O + O2 I would choose B, since IO
asked by Marcus 
Algebra 2 ..
during a sale, a music store is selling all drum kits for 20 percent off. Preferred customers also receive an additional fifteen percent off. Write a composite function to represent the final cost of a kit that originally cost c dollars. Find the cost of a
asked by Anonymous 
Math
A man was given $x. He spent 50 cents a day. How much money had he left after A) 10 days? B) 2 weeks? C) t days?
asked by Emily 
PHYSICS
A person on an apartment balcony holds a ball over the balcony and throws it directly upwards with an initial velocity of 30 m/s [up]. The ball was thrown from 15 m above the ground. How long will it take for the ball to hit the ground?
asked by Tasha 
Science
5. John Dalton proposed that all matter is made of atoms. True False I think that its false.
asked by Jman 
reading
(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventhgrade science, I have some experience with the faces
asked by Anonymous 
Math
Sandra makes a pizza on 2/6 of the pizza.she adds green peppers to 5/6 of the pizza .which topping covers more of the pizza
asked by Pietro 
physics
if 3 resistors of 2,3 and 5 ohms are connected in parallel and a battery of 10 volts is applied across it, then what is the potential drop across 3 ohms resistor ?
asked by ashwita 
english
This question is based on the following paragraph. (1) It was December 7, 1941. (2) The freighter Florentine, 320 miles northeast of the Hawaiian Island of Hilo was lumbering along at about 15 knots when the garbled message came in over the radio: (3)
asked by nanna 
Chemistry
Calculate the density a gas will have at STP if its molar mass is 41.8 g/mol.
asked by Bay 
Trig
Is the angle 11pi/12 on the unit circle the same as the angle pi/12? I'm thinking it would be, but I'm not sure.
asked by Casey 
math
a scale model of a car is drawn with a scale of 1:12. if the scale model is 185mm long, how long is the actual car?
asked by jill 
chemistry
Enter the symbol for the element represented by the following electronic configuration. [Ar]4s23d6 ??? How does this work?
asked by will.i.am 
physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and α = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is μk = 0.40. The mass m2 is moving up at a constant speed. (a) What is
asked by Alli 
Math
I need help please. Find the critical z values. Assume that the normal distribution applies. RightTailed test; x=0.03. z=?
asked by Mandi D 
math
A trapezoid has an area of 10.5cm^2 and parallel sides that meausure 5.0cm and 2.0cm. What is the height of the trapezoid? Explain what you did.
asked by Anonymous 
Mathsfinancial
Ted needs to take out a loan to buy a new bicycle.He is able to repay the loan by means of 15 semiannual payments of R2500,starting in 6months from now,when interest is 16% p.a compounded quartely.Calculate the amount of the loan
asked by Lucas 
Algebra
Who Discovered the First Singind and Dancing Hawk?
asked by Cameron 
Chemistry
Use the equation for the synthesis of hydrogen to answer the following. 10 points. C (s) + H2O (l) > CO (g) + H2 (g) deltaH = + 31.3 kcal/mol carbon deltaS = +32 cal/(mol•K) Calculate the energy change (deltaH) when 5.00 g of carbon is consumed.
asked by John 
math
If a person runs 5 miles in 1 hour, how far will they run in 5 minutes?
asked by sara 
chemistry
What is the density of a block of unknown material with a mass of 15.86 g if the dimensions are: length = 2.2 cm height = 1.7 cm width = 4.8 cm
asked by kim 
english
Instructions: Read each passage carefully. Classify each underlined word(s) as a noun (N), pronoun (PN), verb (V), adjective (A), adverb (AV), conjunction (C), preposition (P), prepositional phrase (PP). Be sure to use the abbreviation and not the full
asked by tamara 
Physics
Planet Earth as a Spring. Assume that the Earth is perfect sphere of mass M=5.98x10^24kg, radius 6,370km, and uniform density. Imagine a long, straight tunnel through the center of the Earth, connecting the North and South poles . A capsule of mass m is
asked by Betty Ariston 
maths
Find the number of triples of integers a
asked by raj 
Business calc
A total revenue function is given by R(x) = 1000(x^2  0.1x)^1/2 , where R(x) is the total revenue, in thousands of dollars, from the sale of x items. Find the rate at which total revenue is changing when 20 items have been sold.
asked by Lina 
Algebra
please help me solve these question, simlify: (x^4y^4)/(x^3y^3)
asked by Jeconiah 
Physics
A mass is attached to a spring stretches it 2.5 cm from equilibrium. The mass is lightly tapped and set in an oscillation. What is the angular frequency of the of the oscillation?
asked by Andy 
Physics
a plane is 521 meters horizontally from its intended target traveling at 62.5 m/s in order to hit the intended target from that distance how high is the plane in meters
asked by Blake 
Math
Wha5t does the highest frequency mean?
asked by Ava Knapp 
Maths
find range for g(X)= cos4x
asked by Ray 
physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and á = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is ìk = 0.40. The mass m2 is moving up at a constant speed. (a) What is
asked by Stehlin 
Lang. Arts
Rewrite sentence using commas. In the June 29 1999 edition of the Mercury there was an article on skateboarding. I wrote... In the June 29, 1999 edition of the Mercury, there was an article on skateboarding.
asked by Cassie 
phy
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. how high above earth? acceleration?
asked by faaash 
Physics
The capacitance in a series RCL circuit is C1 = 1.2 μF, and the corresponding resonant frequency is f01 = 7.2 kHz. The generator frequency is 1.2 kHz. What is the value of the capacitance C2 that should be added to the circuit so that the circuit will
asked by Please HELP 
physics
a small conducted sphere is attached to the end of an insulating rod .it carries a charge of +5.0*109 C. the plates ,which are 4.0 cm apart, are connected to a 50 000 V supply.
asked by Anonymous 
Lang. Arts
Rewrite sentence using commas. As they studied the film they noticed some rules of science at work. I wrote... As they studied the film, they noticed some rules of science at work. There isn't one after noticed  right?
asked by Cassie 
math
a=9 b=2 c=5 d=3 2ab to the second power  cd =
asked by tombasketball 
East brainerd elementary
reasoning Eric and Madison both measured the same trading card.Eric says the card is about 3inches long.madison says it is about 23/4 inches long.their teacher says both are correct.how is that possible?
asked by Latha 
Algebra
Simplify 9a(a7)8+3(a)
asked by LaShawn 
Math 8
A rectangular field is to be fenced completely. The width is 28yd. And the total area is is 1960ydsquared. What is the length of the field ? I got: 70 yd Is that right?
asked by Marco 
Math
What is the rule for this function? INPUT OUTPUT 1 2 2 5 3 9 4 14 5 20 6 27
asked by Lynn 
Physics
Masses 15 kg and 8 kg are connected by a light string that passes over a frictionless pulley with the 15 kg mass on a table and the 8 kg mass hanging off the edge. The acceleration of gravity is 9.8 m/s2. If the 15 kg mass, initially held at rest on the
asked by mike 
Math 4
Karen is buying wallpaper border for her bedroom Which is 12ft by 13ft. If the border is sold in rolls of 5yards each how many rolls will she need to purchase? 156ft. Divide by 3 is total 52 yrds. So divide by 5 yd 10 for 50 yard.karen would need at 11
asked by Marco 
World History
What is the significance of Dorothea Dix? My answer: She changed mental institutions, inspecting them for mistreatment.
asked by Victoria 
Basic Math Pharmaceutical calculations
Drysol contains 6g of aluminum chloride hexahydrate in 42ml of an alcohol base. What is the final strength of Drysol?
asked by Shanna 
physics
a curling rock with a mass 22 kg is traveling 0 degrees at 3m/s and collides with a stationary object with the same mass the collision is a glancing one and the struck roce is moving 1m/s at 65 degrees what is the velocity after the collision
asked by matt 
math
Solve: 2X = 100
asked by tamara 
Math
2k+7=5kk
asked by Tony 
math
Find the sum of 256, 14, 632, and 25.
asked by tamara 
math
A factory produces bicycles 6 motorcycles in 9 hours. Write a proportion and solve it to find how many hours it takes to produce 16 motorcycles
asked by Brittany 
maths
A man is visiting a village where each person either always tells the truth or always lies. There are 5 villagers standing in a row, and the man asks each of them how many of the 5 men standing in the row always tell the truth. Each villager gives an
asked by raj 
chem
There are a number of definitions for acids and bases. Match the following definitions to the correct theory. Theory Definition A. Arrhenius I  donates or accepts protons B. BronstedLowry II  donates or accepts a lone pair of electrons C. Lewis III 
asked by shakira 
Maths
Siuan's grandmother recently signed up for a twitter account. She only follows five people  her five grandchildren. Each day, each of her grandchildren make two tweets and at the end of the day Siuan's grandmother gets an email that lists all ten tweets
asked by John 
math
the length of the rectangle is 43 cm. what widths will make the perimeter greater than 120 cm?
asked by luz 
math
1/3 =
asked by Leslie 
math need to make sure
what number is 20% of 75
asked by luz 
Life orientation
What according to the basic condition of employment act applies with regard to the contraventions that you`ve identifind?
asked by Sibusiso 
math
A shipper bought three of the same shirt and paid $63 after the 30% discount. What was the original price of one of the shirts?
asked by johnny 
Algebra, please help quick
simlify the following to the lowest terms: (a) [x^2y^2]/[x^2+y^2] (b) [3a^2+6aba2b]/[9a^26a+1] (c) [x^4y^4]/[x^3y^3] (d) [36x^3y^4z]/[64x^5y^2z^3]
asked by Jeconiah 
devry
find the point slope of an equation using the ordere pairs. (6,26) and (17,85)
asked by latifa 
math
pencils come in packages of 24. The teacher needs 80 pencils for a test. How many packages will he need to purchase?
asked by sarah 
Arithmetic
three numbers in an arithmetic sequence sum up to six. if you add 1 to the first number, 2 to the second number, and 5 to the third number, what are the orginal three numbers?
asked by Isaac 
physics
A person takes in a breath of 27C air and holds it until it warms to 36.5C. The air has an initial volume of 0.39 L and a mass of 0.00077 kg. Determine the work done by the air on the lungs if the pressure remains constant at 1 atm. Answer in units of J
asked by scott 
financial management
If a person buys a share of stock for $60, receives a $5 dividend and one year later sells the stock for $70, what is their return?
asked by Anonymous 
physics
a net force of 5000N accelerates a car from rest to 20m/s in 10s. what is the net force exerted on the car
asked by rose 
Algebra
simpliy the following: (a) {[4x^249]/[8x^3+27]} *{ [4x^2+12x+9]/[2x^213x+21]} (b) {[x^2+x6]/[x^2+7x6]}*{[20x^27x3]/[6x^225x+4]}*{[4x^211x3]/[6x^219x+3]}
asked by Jeconiah 
Physics
what is the average force needed to stop a car (1000kg) traveling 28m/s in 55m?
asked by Anonymous 
Algebre
simplify: {[3x^2+10x8]/[5x15]}/{[x^3+64]/[x^29]}
asked by Jeconiah 
maths
urn contains 4 white and 6 red rolls. Four balls are drawn at random (without replacement) from the urn. Find the probability distribution of number of white balls?
asked by Anonymous 
math
Find the arithmetic sequence if the fourth term is 6 and the eleventh term is 34
asked by Lucia 
Math
Please show the solutions! 1.) x+y2(2x3y) 2.) x+y/2  3xy/4 + x5y/8 3.) 4x {3x[(x3)2(x5)]} 4.) a+5b/2 + a3b/3  5(ab)/6 5.) 2x5=3x9 6.) 3x(2x7)=2x+3 7.) 7x+2/6  x4/3 = x+3/3 8.) 3x2(x3)+3(52x) 9.) x+1/3  x2/4  x/6 10)
asked by Emily 
maths
1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. Find the derivative of 2^x^2+log2(2x^21) 3. Use DeMeoivre's theorem to simplify the following expressions [(Cos pie/3 + isin pie/3)^5 (cos 2pie/3 isin 2pie/3)^4]/ (cos pie/6  isin
asked by muselitata 
Quick help! Algebra
simplify: (9x^216/x+1)/(4x3)
asked by Jeconiah 
trig
To determine the distance to an oil platform in the Pacific Ocean, from both ends of a beach, a surveyor measures the angle to the platform from each end of the beach. The angle made with the shoreline from one end of the beach is 83 degrees, from the
asked by Don 
maths
1. Prove using mathematical induction that 1+2+3+...+n=[ n(n+1)]/2 2. Find the derivative of 2^x^2+log2(2x^21) 3. Use DeMeoivre's theorem to simplify the following expressions [(Cos pie/3 + isin pie/3)^5 (cos 2pie/3 isin 2pie/3)^4]/ (cos pie/6  isin
asked by muselitata 
math
a piece of limestone weighs 3/5 of a pound. A piece of slate weighs 4/7 of a pound. What is the difference in the weight of the two rocks?
asked by sarah 
math
Evaluate the expression: log(base4)4^6
asked by Rachel 
Chemistry
How many molecules of ethane (C2H6) are present in 0.249 g of C2H6? Enter answer in scientific notation.
asked by Tessa 
Please help quick
simplify: (x^2y^2)/(x^2+y^2)
asked by Jeconiah 
math
there are about 20 potatoesin 5 pound bag.A resturant uses about 2 potatoes per order of french fries. How much money does the resturant take in on a day that they use 400 pounds of potatoes
asked by alex kyza 
Maths
R=square root of u squared plus v squared divided by m and u and v are positive.Find u when r=3,v=6 and m=5
asked by John 
math
3 + 7  7 + 3  3 × 3
asked by Crystal 
Physics
What are the frequencies and the note names of the first six harmonics of the note G3? Explain your procedure.
asked by Anonymous 
Maths
R=square root of u squared plus v squared divided by m and u and v are positive.Find u when r=3,v=6 and m=5
asked by John 
Grammar.....
She or her? There shouldn't be any similarities between ( her, she) and Pat. My answer: her
asked by Anonymous 
Algebra II
Graph each ellipse and find its foci : a) 3x^2+y^2=12 b) 5x^2+9y^2=45
asked by Anonymous 
algebra
Estimate the answer then find exact answer simplify if possible 1 1/4•28
asked by Anonymous 
bioelectricity
Assume that frog muscle cell membrane is permeable to Na and K only. The membrane permeabilities for Na and K are Pna and Pk respectively. At 16∘C, the resting membrane is 91 mV. What is the ratio of permeabilities Pna/Pk? For frog muscle, intracellular
asked by B 
bioelectricity
At a temperature of 10∘C, the concentrations of ions are: IonIntracellularExtracellular Na61485 K28010 Cl51485 The transmembrane potential is 30 mV. How many ion species (Na, K, or Cl) are NOT in equilibrium?
asked by B 
Bioelectricity
Na equilv: Only sodium may cross a membrane separating two compartments. At a temperature of 28∘C, the concentrations of sodium ions are: intracellular: 100 extracellular: 485 What is the equilibrium potential? Give a numeric answer within 1%, in mV.
asked by B 
Bioelectricity
K equilv: Only potassium may cross a membrane separating two compartments. At a temperature of 30∘C, the concentrations of potassium ions are: intracellular: 280 extracellular: 110 What is the equilibrium potential? Give a numeric answer within 1%, in
asked by B 
Chemistry/geology
Why is graphite more stable than diamond at 25˚C and 1 atm?
asked by Anonymous 
bioelectricity
Cl equilv: Only chloride may cross a membrane separating two compartments. At a temperature of 26∘C, the concentrations of chloride ions are: intracellular: 70 extracellular: 485 What is the equilibrium potential? Give a numeric answer within 1%, in mV.
asked by B 
Chemistry/geology
Why is Fe3+ likely to precipitate in the presence of oxygen?
asked by Anonymous 
bioelectricity
Let Pk, Pna and Pcl be permeabilities of squid axon membrane for potassium, sodium and chloride, respectively. During the rest, the ratios of permeabilities are given by Pk:Pna:Pcl = 1.0 : 0.043 : 0.44 During the peak of an action potential these ratios
asked by B 
report
What are key findings? I have to include this in a lab report. Thank you for any help
asked by Katie 
math
how many grams go in 2,340 kilograms
asked by sophia 
edu
Childteachingchild events: a. focus children to be friends b.are not beneficial to exceptional children c.incorporate opportunities for affection within songs and games d.have to be done every day to be effective I think c or d not sure need help mostly
asked by tim 
science
what is sewage ? explain why it is harmful to discharge unteated sewage into rivers or ses
asked by shashi ranjan 
equivalent fraction
What is equivalent to 5/10 and 11/20
asked by jiteanna 
Math
Maria leaves her house to meet jane at the zoo. Jane lives further away than Maria and drives 8mph fatser than Maria. Their combined distance is 84 miles. If they both drive 45 minutes, find their average speeds.
asked by Barbara 
reading
(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventhgrade science, I have some experience with the faces
asked by Anonymous 
physics
A 10 kg mass is sitting on a 25 degree incline. A constant force of 49N is applied up the plane. The coefficient of static friction is .25. Does it go up or down or does it stay put?
asked by Aaron 
math
15x
asked by shashi ranjan 
chemistry
A system at equilibrium contains iodine at a pressure of 0.21 and iodine at a pressure of 0.23 . The system is then compressed to half its volume.Find the pressure diiodine of when the system returns to equilibrium.
asked by Anonymous 
Math
Can someone show me how to figure out the following problem? The slope of the graph of y = 5x is what? Thank you
asked by Jonathon 
World History
What is the significance of strike?
asked by Victoria 
physics
If 4.5 kg object is sitting at rest on a 30 degree incline that has a coefficient of static friction of .19, what is the net force down the plane? Does it start sliding?
asked by Aaron 
Lang.Arts
While I was researching skateboards I found an interesting old newspaper story. We need to rewrite the sentence placing commas where necessary. I wrote it like this... While I was researching skateboards, I found an interesting old newspaper story.
asked by Cassie 
physics
A student is attempting to haul a 500 kg log down a 24 degree hill. The log has a coefficient of friction of .5. The student is pulling with about 1700 N of force. Is the student pulling too hard or too lightly? Calculate exactly how much harder or less
asked by Aaron 
chem
An ethylene glycol solution contains 21.5 of ethylene glycol in 82.9 of water.
asked by Anonymous 
Physics
A coin is projected with speed 6m s1 (metres per second) along the horizontal surface of a bench. The coefficient of friction between the coin and the surface is 0.7. Modelling the coin as a particle and assuming no air resistance, find the speed of the
asked by Josep 
Physics
How would you use a concave mirror of radius of convatrue 18cm to give a four time magnified erect image of an object?
asked by Faisal Attahiru 
Lang. Arts
Rewrite the sentence using commas. Some scientists in San Francisco California filmed skateboarders in action. I wrote... Some scientists in San Francisco, California filmed skateboarders in action.
asked by Cassie 
Math 9
1. A premium box ticket at the Canucks game is $60 more than the low section next to the glass. The middle section is $90 less than the box section. The total for these three seats is $360. How much does each seat cost? Use algebra. 2. A house is being
asked by Molly 
Algebra
2xy=1 how do you put this in slopeintercept form y=mx=b ?
asked by Anon 
algebra
what is the ratio of 22 boys to 26 girls
asked by roblyn 
phy
A velodrome is built for use in the Olympics (see the figure below). The radius of curvature of the surface is 17.1 m. At what angle should the surface be banked for cyclists moving at 11 m/s? (Choose an angle so that no frictional force is needed to keep
asked by faaash 
Physics
How would you use a concave mirror of radius of convatrue 18cm to give a four time magnified erect image of an object?
asked by Faisal Attahiru 
geometry
Martin and Patrick have a model of an airplane which they want to duplicate. Martin uses a string and ruler to make approximate measurements of lengths to duplicate the picture. Patrick uses a pencil and paper and duplicates the picture without the help of
asked by Anonymous 
ALGERBRA_HELP_ASAP
.I need to find a rule for .the inputs: 1,2,3,4 and the outputs:3,9,18,30. Please Help! Thanks
asked by Lauren 
HCA 220
WHY ARE THE FIVE SKILLS OF MEDICAL COMMUNICATION IMPORTANT FOR HEALTH CARE ADMINISTRATION? WHAT TECHNIQUES WILL YOU USE TO LEARN THESE NEEDED SKILLS AND MEDICAL TERMS IN THIS COURSE?
asked by kAREN 
Physics
A plant falls from the windowsill of an apartment in a very tall building. If the floor of your apartment is 12.19 m above the ground, and it takes the plant 0.2580 seconds to cross your 9 ft window, from what height did the plant fall? ? m Explain what
asked by Katie 
life orientations
name the different of systems of media ownership that can be found worldwide .name a country where each systems can be found
asked by mbongiseni 
electronic medical recocords
how many people were on the capitation claims management list list the name or names
asked by Anonymous 
electronic medical recoco
how many total patients were on the reminder list and which patient appeared twice
asked by Anonymous 
Lang. Arts
Rewrite sentence using commas. To be a good skater you have to follow safety rules. I wrote... To be a good skater, you have to follow safety rules.
asked by Cassie 
science
Can you help me with an acrostic for science pertaing to plants
asked by matt 
Algebra
I need to find the slope of a ladder that is leaning against a building. The bottom of the ladder is 9 ft from the building and the top of the ladder is 16 ft above the ground.
asked by Todd 
Lang. Arts
Rewrite sentence using commas.. Yes skateboarding is not only a sport but a science. I wrote... Yes, skateboarding is not only a sport, but a science.
asked by Cassie 
Math quest3
The formula for the surface area of a sphere is 4(3.14)r^2. What is the surface area of a ball with a diameter of 6 inches round? Round to nearest inch. I got. 113.04 Rounded is 113 inch
asked by Marco 
Math
Place the following fractions in order least to greatest: 6/8, 7/12, 3/9, 5/7 How do you know which is least and greatest?
asked by Kim 
Lang. Arts
Rewrite using commas. When you balance on a skateboard there are three forces at work. I wrote... When you balance on a skateboard, there are three forces at work.
asked by Cassie 
Lang. Arts
Rewrite using commas. The weight of the rider is one force and gravity is another. I wrote... The weight of the rider is one force, and gravity is another.
asked by Cassie 
mathsurgently needed
the general solution of sin x + sin 2x + sin 3x + sin 4x = 0 ?
asked by Anonymous 
Chemistry (DrBob222)
Hi, here's my (almost) 2paged lab report introduction (hopefully you remember it from yesterday). I went to class today, and actually a lot of my other classmates' introductions were over 2 pages! Now I'm feeling kind of insecure about mine, and I'm not
asked by a Canadian 
Lang. Arts
Rewrite the sentence using commas. Pushing up against the skateboard the ground also acts as a force. I wrote... Pushing up against the skateboard, the ground also acts as a force.
asked by Cassie 
Chemistry
What is the maximum number of electrons that can occupy a subshell with l = 2 ? (Remember that l = 0 denotes an s orbital, l = 1 denotes a p orbital, l = 2 denotes a d orbital, and l = 3 denotes an f orbital.) ?????
asked by will.i.am 
MATHS!
While training for a triathlon, Trina will first swim, then cycle and finally run. She will swim either 200, 300, 400 or 500 metres, followed by cycling 5, 9, or 13 kilometres, and finally running either 2 or 3 kilometres. How many different possible
asked by can u please help me! please 
Math
2/12x3/12=8/12 A. x=5/2 B. x=11/2 C. x=11/12 d. x=11/6 My answer: B
asked by Sabrina 
Lang. Arts
Rewrite the sentence using commas. Pushing up against the skateboard the ground also acts as a force. I wrote... Pushing up against the skateboard, the ground also acts as a force.
asked by Cassie 
math
nature of factors of trinomials? 6x2t56
asked by ricardo 
meghan
Draw and name the product obtained in the following acidbase reactions: 1. 2isopropylpentanoic acid + NaOH 2. 2isopropylpentanoic acid + NH3
asked by organic chemistry 
math quiz tomorrow
I am having problem graphing with these two equations 2(3^x)3 and –3(3^–x)
asked by Tristan 
Algebra
Simplify 1(x+1)7x(x^2+2x+1)
asked by LaShawn 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m?
asked by Tory 
Guidance and Discipline
In Ms.Edwards' twoyearold room,Brenden is working hard to build a block tower. The tower falls each time Brenden tries to stack the third block onto the second block. After three tries, Brenden throws the blocks wildly and begins to scream and cry. Which
asked by Sandra 
enlish
correc the following sentences for subjectverb agreement,tens and fragment. 1. My cat it is very playful 2. when he thought he could afford to pay his own school fees. 3. This children keep making noise. 4. These are great news indeed; i can`t believe i
asked by donald 
math
what is the greatest common factor 42, 78, and 120?
asked by sarah 
Algebra
Simplify 6x4(4x+1)+6x+12(4x^2+9x+2)
asked by LaShawn 
math
How do you write 54% as a fraction in simplest form?
asked by sarah 
World History (Ms. Sue)
What is the significance of revival?
asked by Victoria 
Principles of Management
Riya, a manager, calls a meeting of her subordinates to tell them about the new benefits package.Riya is performing the _______role. A. Disseminator B. Monitor C. Spokeperson D. Negotiator My answer: A 2nd question: Namibia has a law that prohibits foreign
asked by Sabrina 
Math 5
A rectangular yard is twice as long as wide the perimeter is 120ft. What are the yards dimensions? W : L : I got. W : 10. And ll: 50 Is that right ?
asked by Marco 
Life orientation
What,according to the Basic conditions of employment Act applies with regard to the contraventions?
asked by Mavis 
Lang. Arts Ms. Sue
Ms. Sue I don't know if you remember this question, but I got it wrong and I need to know the rule why. I put ...Please come with me, Sarah, and Tom, to pick up Mom's birthday present. He said there is no comma after Tom. I need to know the rule to why you
asked by Cassie 
Physics
what is the average force needed to stop a car traveling 28m/s in 55m?
asked by Tory 
chemistry
assume the true concentration of the acetic acid solution is .175M and calculate the percent relative error in your measurement?
asked by john 
government
Which court has the highest jurisdiction? A county traffic court A State court of appeals A State court A federal appeals court
asked by Anonymous 
math
what is answer of 7 cubed
asked by tyler 
math
Temp was 36 degreea when becky returned home at6pm temp was 4degrees higher at 3pm then it was at 6pm. It was 3degrees warmer at 12noon then ut was at 3pm . What was temp at 12noon
asked by jamyah 
math
Find the density of an object which has a mass of 360 grams and fills a volume of 36 mL.
asked by heather 
World History (Ms. Sue)
What is the significance of the Second Great Awakening? My answer is the Second Great Awakening is significant because it led to the formation of new Protestant denominations which saw overall church membership greatly increase. It also gave impetus to
asked by Victoria 
Grammar
what prefix turns the word "town" into a word meaning "center of town"?
asked by Angie 
math
Find the product of 237 and 14.
asked by tamara 
English
how to write an Acrostic poem where subject matter is YERTLE
asked by nini 
Grammar
one last question sorry: Which is correct? (1) He took the news bad. (2) He took the news badly.
asked by Angie 
Algerbra
HELP!!!!!!! I have to find a rule for the following in and out. Input: 1,2,3,4 Output: 3,9,18,30 Thank you!!
asked by Sydney 
science
how many seconds will it take a speedboat traveling at 70 km/h to cover a distance of 5km?
asked by hello 
science
Who's acidity is higher?c6h5cooh or hoc6h4cooh
asked by TITAS PAUL 
English 12
I am doing a literary research paper on chaucers canterbury tales. I need help in writing my thesis for this paper also i can not figure out a topic.
asked by Vicky 
geometry
Write an equation for each circle described. Center at origin,radius is 3. I'm stuck.aren't I suppose to be given an endpoint for me to be able to use the midpoint formula to find the center? I need help please...oh that's the only thing they give me.
asked by ian 
Math
Bill spends 30 minutes on his homework. Dave spent three times as long as bill and jill spent twice as long as bill & dave together. How many total minutes did they spend on homework? How many hours is that
asked by Gio 
Math Please answer
how to find slope of a graph without points please make it as simple as possible
asked by alex 
science
A bus travels from city x due east toward city y. If the bus travels at an average velocity of 90 km/h [E], what will be the displacement of the bus 4.5 h later? SHOW WORK PLEASE!
asked by Le 
math
Do you always use the property of distribution when multiplying monomials and polynomials? Explain why or why not. In what situations would distribution become important?
asked by Anonymous 
Prob and stats
A card is to be chosen at random from a shuffled deck. Find the probability the card drawn is A. The queen of clubs , given that it is an honor card B. a red four, given that the face number is even C. A seven, given that the face number is prime Please
asked by Mac 
english
22. In which one of the following sentences does the verb agree with the subject? A. Here is the reasons we can't start the car. B. The book that explains the plays is on the shelf. C. Who is the people in the photograph? D. There is a million reasons why
asked by nanna 
us history
explain jacksons war on the bank
asked by jj 
chemistry
What is the density of a 16.54 g object if the dimensions of the block are: length = 12.6 mm height = 1.91 cm width = 0.0140 m
asked by kim 
math
Marni wants to fence in a rectangular are of 48 ft squared. she wants to but the least amount of fencing. 1. Describe the dimensions she should us to build the are. use whole numbers only 2. How much fencing wil she need 3. Explain how you found that
asked by idk 
edu
Children learn help care skills best when a.teachers teach them carefully b. they are part of their daily routine c.they are mature enough to learn them d.adults provide a great deal of assistance I think d am i correct
asked by tim 
marketing
what is market segmentation
asked by tom 
English
Which of the sentences below using direct address is punctuated correctly? (1 point) Please come with me, Sarah, and Tom, to pick Mom’s birthday present. Please come with me, Sarah and Tom to pick Mom’s birthday present. Please come with me, Sarah, and
asked by Anonymous 
chem
Why are we deprotonating the carboxylic acid that is initially dissolved in the dichloromethane?
asked by shakira 
math 9 help
A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the
asked by Molly 
Math
Killer robots are trying to take over the world. They know the password to the doomsday weapon is 5 digits long and contains either 0 or 1, and either 2 or 3, and either 4 or 5, and either 6 or 7, and either 8 or 9. If the robots can enter 5 passwords per
asked by John 
english
22. In which one of the following sentences does the verb agree with the subject? A. Here is the reasons we can't start the car. B. The book that explains the plays is on the shelf. C. Who is the people in the photograph? D. There is a million reasons why
asked by nanna 
mathsurgently needed
integrate 1/x dx w.r.t x answer should be log(x) or ln(x) and why
asked by Anonymous 
math problem
Both Al and Bill must run from their positions to point C and then on to D. They start at the same time and each runs at a constant speed . When Bill gets to point C Al has passed there and is 40 yards towards D. If point D is ____ yards from C, they will
asked by Mike 
chem
In the BronstedLowry theory of acids, an acid will lose a proton (H+) and leave behind the conjugate base of the acid. The conjugate base of a strong acid is?
asked by shakira 
Physical science
If a ball is thrown straight up at a speed of 24.7 m/s, for how long of a time will it continue to rise before it starts to fall back down?
asked by Leigh 
History
What limits on national powers can be derived from the tenth amendment?
asked by Vince 
7th Grade Math
5. Park Rangers wanted to estimate the total number of wild mustangs in Central Oregon. They tagged 30 wild mustangs and sent them back to the herd. They recorded the mustang population once a month for the next three months as shown below. Month 1 Month 2
asked by Chris 
Math
John is building a fence that is 6 feet high and 18 feet wide to put around his garden. He has two sizes of boards that he can use. One is 2 feet by 6 feet and the other is 4 feet by 6 feet. John can put the boards either horizontally or vertically and he
asked by John 
physics
You and a friend are going to a river, where they have a rope swing. Your friend, who has a mass of 60 kg, hops on the end of the rope. You tug horizontally on your friend with a force of 300 N, pulling them back until you can't move them any more. Then
asked by can u please help me! please 
advance functions
Determine the Interval notation and Inequality notation of the absolute value notation: abs(x)>5
asked by jc 
physics.....
Two soccer players on a breakaway start from midfield and run straight down the field with a separation of d=5 m and with the same velocity v=7 m/s. The last defensive player of the other team approaches the player who has the ball, so that person decides
asked by can u please help me! please 
AP Physics
So my question is about projectile motion. We just learned in class about the equation for finding the range: R=v^2sin(2theta)/g I understand that and I think I see where it comes from. My question is, if someone were to collect data on the projectile
asked by Sydney 
Algebra
(3a^2+6aba2b)/(9a^26a+1)
asked by Jeconiah 
GEOGRAPH
What are the similaritier and different of latitude and longitude
asked by KAFILAT 
World History (Ms. Sue)
What is the significance of strike? I am unsure of the answer to this question, but I think it would be... strike is significant because stopped workers to demand better working conditions. Am I correct?
asked by Victoria 
Algebra 2 ..........
During a sale, a music store is selling all drum kits for 20% off. Preferred customers also receive an additional 15% off. 1. Write a composite function to represent the final cost of a kit that originally cost c dollars. 2. Find the cost of a drum kit
asked by Anonymous 
Math
Find the sum of all primes a
asked by John