Questions Asked on
December 11, 2014

health
Which of the following statements is CORRECT regarding deciding whether an alcohol sale is legal? A. IF a person looks over 21, they likely are. B. Few minors have physical characteristics of an adult. C. if a person looks like a minor, they likely are a
asked by jay 
Math
Centerville is the headquarters of Greedy Cablevision Inc. The cable company is about to expand service to two nearby towns, Springfield and Shelbyville. There needs to be cable connecting Centerville to both towns. Centerville is located at (10,0) in the
asked by Lukas 
Chemistry
Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) > 2HCl(g) + Na2SO4(s) How many grams of HCl can be prepared from 2.00 mol H2SO4 and 2.56 mol NaCl?
asked by Anonymous 
chemistry
When calcium chloride and ammonium phosphate are mixed, an insoluble precipitate of calcium phosphate forms and falls out of solution. After careful analysis of the purified precipitate, 8.16 * 10^25 atoms of calcium are found in the solid. How many other
asked by Yasmin 
math
The length of a piece of paper is 8.5 inches. Using scissors, you reduce the length of the paper to 4.25. What is the scale factor of the dilation? A 1/4 B 1/2 C 2 D 4 I think its A ?
asked by jasmine 
Chemistry, Vapor Pressure
Select the pair of substances in which the one with the higher vapor pressure at a given temperature is listed first. 1. C7H16, C5H12 2. CCl4, CBr4 3. H2O, H2S 4. CH3CH2OH, CH3OCH3 5. Xe, Kr
asked by Ryan 
English
1) In the story "A Meeting in the Dark," John's character advances the plot and communicates the theme through each of the following conflicts except. A)man vs. man B)man vs. nature C)man vs. society D)man vs. himself 2) Read the following sentences that
asked by Andre 
Math
At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel 13 minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your chair
asked by Anonymous 
math
I have a math question.two fielda ats state park are 1000 meters from each other.on a map,the two fields are 8 centimeters apart.What scale is the map using?is it the metric scale??
asked by ricky 
Chemistry
Methane reacts with oxygen to produce carbon dioxide, water and heat. If the percent yield of the reaction is 90.0%, how many grams of methane must be burned to produce 150.0 kJ of energy? ___ CH4 (g)+ ___ O2 (g) → ___ CO2 (g) + ___ H2O(g) + 802 kJ
asked by Yasmin 
Math
Your fishing bobber oscillates up and down from the current in the river in a harmonic motion. The bobber moves a total of 5.0 inches from its high point to its low point then returns up to the high point every 5 seconds. Write an equation modeling the
asked by Anonymous 
Chemistry
Hydrogen chloride gas can be prepared by the following reaction: 2NaCl(s) + H2SO4(aq) > 2HCl(g) + Na2SO4(s) How many grams of HCl can be prepared from 2.00 mol H2SO4 and 2.56 mol NaCl?
asked by Anonymous 
science
A couple has just learned that their daughter has hemophilia. They already have a son who does not have the disease. What are the genotypes of the couple? Explain your reasoning.
asked by Anonymous 
Chemistry
1. Calculate the concentration of H3O+, HC2O41, and oxalate ion (C2O42) in a 0.175 M solution of oxalic acid (C2H2O4). [For oxalic acid, Ka1 = 6.5 ´ 102, Ka2 = 6.1 ´ 105.]
asked by Anonymous 
Math
Ned folded a set of oragami figures. Of this set, 5/8 are cranes and 1/6 of the remainder are frogs. The rest are grasshoppers. What fraction of the origami figures are grasshoppers?
asked by Anonymous 
chemistry
write an equation that describes the equilibrium present in a saturated solution of Cu3(PO4)2 someone please explain to me, thanks!
asked by Anonymous 
Physics
a 60kg student travelling in a car with a constant velocity has a kinetic energy of 1.2 *10^4 J. What is the speedometer reading of the car in km/h?
asked by Jade 
Algebra
James, Karen, and Lou are hiking. Lou forgot to bring any water. James brought 2 gallons of water and Karen brought 1 and 3/4 gallons of water. The three of them agree to divide all the water equally among them. Lou gives $2 for the water he receives,
asked by Bob 
Math
A souvenir shop sells about 200 coffee mugs each month for 6$ each. The shop owner estimates that for each $0.50 increase in the price, he will sell about 10 fewer coffee mugs per month. a. How much should the owner charge for each mug in order to maximize
asked by Wounding 
math
Four times the difference of 17 and a number is 84. Which equation below can be used to find the unknown number?
asked by jamaica 
Chemistry
Calculate the percent purity of a sample of zinc metal if 325 mL of hydrogen gas is collected by water displacement at a temperature of 22.0 C and an atmospheric pressure of 745.0 mm Hg when 1.12 g of the sample is reacted with excess HCl: Zn + 2 HCl = H2
asked by Harry 
rates and unit rates
Water fl owing from a faucet can fill 1/4 of a tank in 3 minutes. a) How long does it take to fi ll the tank completely with water? b) How long will it take to fi ll 6 similar tanks completely with water? Give your answer in hours and minutes.
asked by vad 
Spanish
Sra. are these correct? Part I ¿Qué harías? Completa las oraciones siguientes en una manera lógica utilizando la forma CONDICIONAL. 1. Si fuera presidente… Si fuera preseident lo haría la gente sea agradable. 2. Si ganara la lotería… Si ganara la
asked by Anna 
chemistry
What does the fact that a blackbody can absorb light only in specificsized "packets" say about light? A. It has no mass. B. It is composed of electrons. C. It is composed of atoms. D. It is quantized. I have no idea what the answer is
asked by Morgan 
statistics finding the shaded region
Find the area of the shaded region. The graph depicts the IQ score of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The shaded region numbers are 85120
asked by Kelli 
Science
When magnesium oxide (MgO) and water (H20)react, they produce magnesium hydroxide Mg(OH)2. Magnesium hydroxide is a medicine used to treat an upset stomach. The equation for this chemical change is shown below: MgO + H20 > Mg(OH)2 if 40.00 grams of
asked by Bobby 
Physics
A 30 ohm resistor is connected to a 1.5 V battery. How much power is dissipated by the resistor? I'm confused of the formula to use here.
asked by Frank 
Problem Solving: Make a Table
Eileen likes to keep scrapbooks. She already has 4 scrapbooks filled with 40 pages each. If she fills 5 pages every month, how many months will it take her to fill up 2 more 40page scrapbooks?
asked by Jamie 
chemistry
When 3.2 g of ammonium chloride is dissolved in 75 g of water, the temperature of the solution decreases from 22.8°C to 20.1°C. What is the energy of dissolution of NH4Cl per mole? (The molecular mass of NH4Cl = 53.49 g/mol, and the specific heat of
asked by Morgan 
chemistry
isotope chromium 51 has a half life of 28 days. If the original sample had a mass of 28.0 grams, what mass of chromium 51 sample remains after 84 days?
asked by Andrea 
math show work please
a bacteria colony doubles in 7hrs. How long does it tae the colony to triple Use N=No2^t/T. where No is the intial number of bacteria and T is the time in hours it take the colony to double.
asked by wally 
cem
What type of compound is Febr3
asked by Tab 
physics
A child and sled with a combined mass of 45.0 kg slide down a frictionless hill that is 8.79 m high. If the sled starts from rest, what is its speed at the bottom of the hill? m/s
asked by Anonymous 
Precalculus
The revenue and cost equations for a product are R = x(50  0.0002x) and C = 12x + 150,000 where R and C are measured in dollars and x represents the number of units sold. How many units must be sold to obtain a profit of at least $1,650,000? What is the
asked by Eva 
Physics Is my work right?
A ball moving at +3.0 m/s along a table rolls off a table and lands on the ground 2.0 m away. How high was the table? h = 9.8 × (2/3)² / 2 = 2.2 m
asked by Penny 
History
Two methods used to control annual floods were ______________
asked by Jordan 
Torque
Calculate the torque produced by a force of 50.0 N applied clockwise perpendicular to the end of a bar of length 0.50 m.
asked by Carey 
physics
A plane designed for vertical takeoff has a mass of 8.2 ✕ 103 kg. Find the net work done by all forces on the plane as it accelerates upward at 10.5 m/s2 through a distance of 25.4 m after starting from rest. J
asked by Anonymous 
physics
An 56.0 N box of clothes is pulled 5.2 m up a 30.0° ramp by a force of 104 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
asked by Anonymous 
physics
A mover has to move a heavy sofa of mass 66 kg to the second floor of the house. As he pulls on the rope tied to the sofa he makes sure that the rope is parallel to the surface of the ramp, which is at 30.0° to the horizontal. If the coefficient of
asked by mathew 
Math
The function f(t)=37sin(pi/3 5)+81 is used to represent the changes in temperature of a chemical compound used in a lab. What is the amplitude? I got 5, is this correct. I have the options of 81, 5, 6pi, 37, and 2
asked by Anonymous 
math
A store sells small notebooks for $8 and large notebooks for $10. If you buy 6 notebooks and spend $56, how many of each size notebook did you buy? my answer: 7 small notebooks and 5 large notebooks is this right?
asked by Anonymous 
math
I go to Conexus and I am super duper behind do you happen to have the answers for the proportions quiz???????? PLEASE A c d c b a d
asked by lovlypandas 
MathCalculus
Find the point on the line 2x + 4y + 3 =0 which is closest to the point (2,1). Note: I have been struggling on this for hours!
asked by Jacob 
Math
A fence is to be built to enclose a rectangular area of 310 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the
asked by Jacob 
Math
Young and Company owes bond holders $5,500 interest at the end of each quarter for the next five years. How much must they deposit now at 8% interest compounded quarterly to yield an annuity payment of $5,500?  I am pretty sure I know how to do the
asked by Jennifer 
Precalculus
The revenue and cost equation for a product are R = x(75  0.0005x) and C = 30x + 250,000 where R and C are measured in dollars and x represents the number of units sold. How many units must be sold to obtain a profit of at least $750,000? What is the
asked by Eva 
physics
A 75 kg person escapes from the burning building by jumping from the window 25 m above a catching net air resistance exerts a 95 N force on the person during the fall apply Newton second law find the acceleration during the fall find the velocity and free
asked by mathew 
chemistry
Which statement describes the principal quantum number (n)? A. The quantum number that indicates the subshell occupied by an electron B. The quantum number that indicates the energy level of the electron C. A subdivision of an energy level in an atom D.
asked by Morgan 
Math
Write the following comparison as a ratio reduced to lowest terms. 25 nickels to 38 dimes?
asked by Tyler 
algebra
A triangle has a perimeter of 112 centimeters, each of the two longer sides of the triangle is three times as long as the shortest side. Find the length of each side of the triangle
asked by Barbara 
Finance
You were hired as a consultant to Giambono Company, whose capital structure is 40% debt, 15% preferred stocks, and 45% common stock equity. The aftertax cost of debt is 6.00%, the cost of preferred stocks is 7.50%, and the cost of common stock equity is
asked by Ely 
physics
An 56.0 N box of clothes is pulled 5.2 m up a 30.0° ramp by a force of 104 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy. J
asked by Anonymous 
physics
A 590 kg racing car completes one lap in 14.3 seconds around a circular track with a radios of 45.0 meters. The car moves at constant speed. (A) what is the acceleration of the car? (B) what force must the track exert on the tires to produse this
asked by Natalie 
Chemistry
Calculate the freezing and boiling points of a solution containing 14.9g FeCl3 in 176g water.
asked by Kate 
algebra
A bus was purchased for $70,000, assuming the bus depreciates at a rate of $6,000 per year(straight line depreciation) for the first 10 years, write the value v of the bus as a function of the time t (measured in years) for 0 < t < 10
asked by Barbara 
Physics
The crankshaft of an engine increases its spin from 1,200 rpm to 1,500 rpm in 0.50 s. What is its angular acceleration
asked by Ron 
vy? in Physics
During what time interval does vy become zero? So I can't really understand what vy means, I know its a abbreviation but I need help on this problem that has a cannon shooting a cannonball horizontally and it has 3 points; the first being 1s, then 2s, then
asked by Ronald 
English
How does voice affect the credibility of a text?
asked by John 
Maths
An observer at the top of a lighthouse 55m Hugh sights a ship at a sea angle of depression of 18°. If the foot of the lighthouse is at sea level how far is the ship from the foot of the light house
asked by Help!! 
Math
A fence is to be built to enclose a rectangular area of 310 square feet. The fence along three sides is to be made of material that costs 3 dollars per foot, and the material for the fourth side costs 14 dollars per foot. Find the dimensions of the
asked by Benjamin 
chemistry
The ?H of the reaction below is 575.13 kJ. Is this reaction spontaneous? 2ZnS + 3O2 + C ? 2SO2 + 2Zn + CO2 A. It is not because the ?H of the reaction is negative. C. It depends on the temperature because the ?H of the reaction is negative and the ?S is
asked by Morgan 
Physics
A 80.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force 1320 N. If the diver comes to rest 5.1 m below the water's surface, what is the total distance between the diving board and the
asked by Anonymous 
math
a rectangle has an area of 20 square feet. A similar rectangle has an area of 180 sq feet. What is the ratio of the area of these similar rectangles? Is it 9 or maybe 3000??? Not sure. Please help....
asked by shaun 
math
the ratio of boys to girls in a club is 7:4, there are 21 fewer girls than boys , what is the total number of children in the club?
asked by Anonymous 
Physics help
A soccer player kicks a soccer ball at +10.0 m/s at an angle of 60°. What are the horizontal and vertical components of velocity of the kick? So I got; vx = +8.66 m/s and vy = +5.00 m/s but I feel like I might have gotten the + and  wrongs..Did I mess up
asked by Marie 
Physics
A ladder of mass M and length 6 m rests against a frictionless wall at an angle of 50 degrees to the horizontal. The coefficient of static friction between the ladder and the floor is 0.5. What is the maximum distance along the ladder a person of mass 11M
asked by Samantha 
Physic
A grenade that is falling vertically explodes into two equal fragments when it is at a height of 2000 m and has a downward velocity of 60 m/s. Immediately after the explosion one of the fragments is moving downward at 80 m/s. Find the position of the
asked by kevin 
Precalculus
A farmer has 1000 feet of fencing materials available to fence a rectangular pasture next to a river. If the side along the river does not need to be fenced, what dimensions maximize the enclosed area? What is the maximum enclosed area?
asked by Eva 
math
A store sells snacks by weight. A six ounce bag of mixed nuts costs $3.60. Will a two ounce bag of nuts cost more than or less than $1.25?
asked by damaris 
Math
Which decimal value is equivalent to 7/11? _ __ _ A. 0.63 B. 0.63 C. 0.675 D. 0.7 "B" is what I chose.
asked by Wendy 
chemistry
A solution contains 0.20 M Cl and 0.20 M SO4^2. a) identify a cation that could be added to the solution to give a precipitate with only one of these anions. MY answer: Cu+ b) write the net ionic equation for the precipitation reaction in part a) MY
asked by Anonymous 
algebra
12. A cat and 4 kittens have a combined mass of 10 kg. If the kittens all have the same mass and the cat’s mass is 4 times as much as a kitten’s, what is the mass of each kitten?
asked by majid 
PHYSICS
An airplane accelerates down a runway at 3.20 m/s 2 for 32.8 s until is finally lifts off the ground. Determine the distancetraveled before takeoff.
asked by jhey 
chemistry
how much heat is required to raise a 54g sample of water from 20 celsius to 90 celsius explain
asked by dd 
Chemistry
All electromagnetic energy (light), including gamma rays through radio waves, has what in common? A. Speed B. Wavelength C. Frequency D. Energy E. Amplitude I think a
asked by Morgan 
grade 10
guys I don't know what career i can do coz I chose math literary  business studiesgeography tourism so if you can help mi plz guyz
asked by marlvin 
Chemistry
Core electrons shield what from the pull of the nucleus? A. Identical electrons B. Valence electrons C. Neutrons D. Protons I was thinking d or a.
asked by Morgan 
Physics
An 85.7N box of clothes is pulled 26.2m up a 31.7 degree ramp by a force of 112N that points along the ramp. The acceleration of gravity is 9.81 m/s^2 How high does it rise above the point of release? What i got as the equation is Einitial + work = Efinal
asked by Simone 
math
cylindrical tank of radius 4m and 7m high.if poured into the tank of 6m diameter .how high is the water?
asked by chev 
Math
A soccer team won two of its first twelve games.The team ended the season winning exactly half of the games it played.What is the fewest number of games the team could have played
asked by Lily Blake 
strength of materials
a water tank is 10 m in diameter and 16m high. if the tank is to be completely filled, determine the minimum thickness of the tank plating if the stress is limited to 60 MPa
asked by Anne 
chemistry
Increasing pressure does what to solubility. Increasing surface area? increasing temp?
asked by dd 
French
What is the difference between vieille and vieil in pronunciation?
asked by Anonymous 
Finance
Your great aunt Mary passed away and left you and inheritance of $5,000.00. Since you don't have a need for the money in the near future, which of the following would be the best place to put the $5,000.00? a) a savings account earning 1% interest b) a
asked by Carol 
Algebra 2
3.4e^22n  9 = 4
asked by S 
AP physics
An object undergoes a displacement x while a force F acts on it. If F does zero work, then the angle between F and x must be
asked by ali 
english
When the movie Star Wars premiered in 1977, it was both surprising and a revolution in its special effects.
asked by Anonymous 
math
Javia ran 8 laps to run a total of amile on monday how many laps will she need to run Tuesday to run 3/8 of a mile
asked by Anonymous 
Math
Use the digits 4'5'6'7' and 8 once each to write an odd fivedigit number . Write it both in standard form and in word form
asked by Emily 
AP physics
A particle of mass 3.00 kg is projected vertically upward with an initial velocity of 20.0 m/s. Neglecting air resistance, the particle’s kinetic energy when it is 20 m above the initial position is:
asked by ali 
sheba universty collage
design an algorithm that keeps on reading numbers until the user enters1and them determines and out puts the largest number .using pseudo codeand flow chart
asked by baikedagn 
Precal
If 80 percent of radioactive element is left after 250 years, then what percent remains after 600 years? What is the half life of the element?
asked by Doug 
statistics probability
Assume that the thermometer readings are normally distributed with a mean of 0 degrees C and a standard deviation of 1.00 degrees C. A thermometer is randomly selected and tested. The probability of getting a reading between 1.39 degrees C and 1.69
asked by Jenn 
Math
Sandy is buying tshirts for her school's club. Company A charges 5.80 per shirt with no set up fee. Company B charges 5.75 per shirt plus a $35 set up fee
asked by Tania 
economics
ugh my book gives us the easy stuff and then our homework makes no sense. if someone could help me out by directing me to any other sites or just explaining how it works and any formulas it would be great. i want to understand what i'm doing but when my
asked by K.T. 
Finance
Fjord Luxury Liners has preferred shares outstanding that pay an annual dividend equal to $7 per year. If the current price of Fjord preferred shares is $94, what is the aftertax cost of preferred stock for Fjord?
asked by maria 
chemistry
What does electron affinity depend on? A. Both the effective nuclear charge and the number of shells in the atom containing electrons B. Attraction between the protons and neutrons C. Only the effective nuclear charge D. Attraction between the valence
asked by Morgan 
chemistry
calculate the energy required to raise the temp of 72g of water from 50c tp 150
asked by dd 
algebra
A refrigerated truck leaves a rest stop traveling at a steady rate of 56 mi/h. A car leaves the same rest stop 1/4 hours later following the truck at a steady rate of 64 mi/h. How long after the truck leaves the rest stop will the ca overtake the truck?
asked by Monica 
Math
How much does the cart weigh? Jason was hauling concrete blocks in a cart. When he had one block in the cart, the total weight of the cart with the block was 55 pounds. When he had 4 blocks in the cart, the total weight of the cart and the blocks was 146.5
asked by Anonymous 
algebra
e^3.9n1  1 = 3
asked by hailey 
Physics
A 4 ohm resistor and 10 ohm resistor are connected in series. If this circuit is connected to a 12 V battery, how much current will flow through the circuit?
asked by Frank 
Math
Malik is 10 years less than half his mothers age. I Malik is 12 years old, how old is his mother
asked by Tania 
PHYSICS
2. A man of 73 kg has a volume of 75 l, of which 5 l correspond to the lungs. (a) Calculate the volume of the lungs when going in apnea underwater to a depth of 10 m, assuming that the density of sea water is 103 kg/m3 . (b) At that depth, will the total
asked by ROB 
mazin
2. How many cells connected in series, each having an EMF of 1.5 V and internal resistance of 0.2 Ω would be required to pass a current of 1.5 A through a resistance of 40 Ω.
asked by khalid 
Trig
What is the period of f(x)=sin4x. I got pi/2 but on my answer list, it is not on there. a.4pi b.2pi c.pi d.1/2pi Which one would i choose?
asked by Anonymous 
Math
When Curtis was born, his parents began depositing $1000 at the end of every year into an annuity to save for his college education. If the account paid 7% compounded annually for the first 10 years and then dropped to 5% for the next eight years, how much
asked by Jennifer 
Chemsitry
What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade
asked by Katherine 
Literature
I need some help with some literature questions based on this passage: From the winter of 1821, . . . I had what might truly be called an object in life; to be a reformer of the world. My conception of my own happiness was entirely identified with this
asked by Lilly G. 
Math
Lora's gymnastics class practices floor exercises every other day. The class practices on the balance beam every third day, the uneven bars every fourth day. Today is March 10, and the class practiced all 3 events.How many more times, before June 1, will
asked by Jhed 
trig
1. The sides of a triangle, in centimetres, are given by 3n4, 3n+9, 4n+5. Draw a diagram to show the information. If the perimeter of the triangle is 114 cm, find the length of each side.
asked by majid 
math
The Eye on Malaysia Park charges ticket for RM14 for an adult and RM8 for children. During the school holiday, the price of the children's ticket increased for about quarter than its normal price while the prices of adult's ticket are double. December last
asked by azzzaa 
french
Hello. I have this bit of french homework. I've already some of it. Please help correct it and help me in the last few blanks. 15. Comme je suis en retard, nous _______ chez nous (restions, reste, restons). 25. Tous les samedis je _____________ des
asked by anonymous 
physics
Two point charges, each 6*105 C, are separated by 30 cm. What is the electrostatic force produced by this arrangement?
asked by Frank 
English
1. It is of no use to cry like a baby. 2. It is no use crying like a baby.  Are both the same and grammatical? Is 'it' a false subject? Is 'to cry like a baby' and 'crying like a baby' a real subject?
asked by rfvv 
nat
An effective piece of document does the all following but a.records information in a systemic fashion b. Tells the story being evaluated. C. Identifies Action items and areas of strength think a
asked by Anonymous 
math
a baseball played 120 games during a season. The ratio of the number of games won to the total number of games played is 2/3. how many games did the team lose during the season? 120/1=2/3 360 divided by 2=180 or 120/x =2/3, 120 divided by 2 = 60
asked by alec 
Math Geometry
Given: Angle ABC is a right triangle with hypotenus AB D,E and F are midpts of the sides of the triangle Proof: a. CDEF is a rectangle b. EC is half of AB
asked by Lori 
Chemistry
After adding a hot piece of titanium to a cup containing 300.0 mL of 30.0 °C water, the final temperature of the solution is 41.2 °C and the final volume of the solution is 400.0 mL. The density of titanium is 4.50 g/cm3. If no energy is lost to the
asked by Laura 
English
1. However rich you may be, you can't buy it. 2. However rich you are, you can't buy it. 3. However cold it may be, you must not stay indoors all day. 4. However cold it is, you must not stay indoors all day.  Which expressions are
asked by rfvv 
Science
Name two functions of a nucleus. [I think one of them is that it contains the cell's DNA.]
asked by Humanoid 
Algebra
The inequality 5 x  2 y + 1 > 0 is satisfied by point (2, 1). True or False?
asked by Devynn 
fin
What's the rate of return you would earn if you paid $4,000 for a perpetuity that pays $75 per year?
asked by Ely 
chemistry
how wud u prepare 1L of a 1.30M aqueous solution of barium sulfide explain
asked by Jim 
chemistry
What is the molality of 67.1g of Nano3 in 2.5l of water
asked by Jim 
Math
Which is independent and which is dependent? The cost or the shirt?
asked by M 
Calculus
My question: An equation of the line tangent to the graph of f(x) = x(1  2x)3 at the point (1, –1) is?? My answer: y = –2x + 1
asked by Jenny 
chemistry
how many moles of solute are contained in 18.5ml 2.5m CaCL2
asked by dd 
Geometry
Carl is looking to buy a farm. While looking at a potential property, Carl wants to know the height of the silo. He measures a nearby tree to be 8ft. When he stands 25ft away from the silo and 2 ft away from the tree, he can see the silo in the distance.
asked by Luke 
Science Project: Teeth (PLEASE HELP)
How hot should water be for teeth to stay in for 30 minutes? I don't have any equipments to heat the teeth and I have check the hospital and have asked my mom.She works in the hospital there and she says they have one in the lab and I can't use it anyway.
asked by PeanutJelly 
chemistry
is finding the molality and molarity the same concept
asked by dd 
Calculus
Hi! I need help with this problem: For 0(smaller or equal to) t (smaller or equal to) 9, a particle moves along the xaxis. The velocity of the particle is given by v(t)= (sin pi/4 t). The particle is at position x= 4 when t=0. a) For 0 (smaller or equal
asked by Dana 
geometry
1. The sides of a triangle, in centimetres, are given by 3n4, 3n+9, 4n+5. Draw a diagram to show the information. If the perimeter of the triangle is 114 cm, find the length of each side.
asked by majid 
English
Especially when the game is called life. There can be a champion in each of us, If we live as a winner, If we live as a member of the team, If we live with a hopeful spirit, For life.  This is a poem. What is the meaning of the
asked by rfvv 
math 120
A recent poll of a random sample of 400 students at a public 4year college showed the average (mean) amount of time spent using email was 49 minutes per day with a standard deviation of 44 minutes. a. find a 95% confidence interval fot the population mean
asked by Anonymous 
chemistry
Q) in the reaction, 210kj of heart energy is used to form 3.0 miles of hydrogen. Calculate how much heat energy is needed to make 1000kg of hydrogen.
asked by hafsa aamir 
calculus
after t seconds the position of a particle which is moving along a straight line is x=2t^39t^2+12t+6, when is the acceleration zero? determine the velocity at that time.
asked by khai 
PreCalc
Radical ((1sinx)/(1+sinx))= (1sinx)/cosx (absolute) Simplify
asked by Anonymous 
math
two integers, x and y have a product of 20. what is the least possible sum of x and y?
asked by anonymous 
Math
The perimeter of a rectangle is 60cm. It's length is 6cm. What is its width?
asked by Tania 
7th grade math
Anna walked 8 miles in 3 hours. Juan walked 14 miles in 5 hours. Are these rates in proportion? 8/3 divided 3/3 = 2.66/1= 2.66 14/5 divided 5/5= 2.80/1= 2.80
asked by kyron 
Economics
Can someone help me with #1  a,b,c it is on economics20145.weebly
asked by Samuel 
Math
The temperature increased 56 in 4 hours , what was the change in temperature per hour
asked by Tania 
geometry
Chords AB and DC intersect at R. Using the values given in the diagram below, what are the lengths of AR and AB.
asked by TJ 
Precalculus
A rectangle is to be constructed so that it is bounded by the xaxis, the yaxis, and the line y = 3x + 4. What is the maximum area of this rectangle?
asked by Eva 
h
When you received the results of an evaluation of your classroom ,which of following should ask yourself first? A.what did the children do wrong? B.what did I do ineffective ? C.what does date mean? D.what changes can I make right away?
asked by Anonymous 
4th
to win $1 millon you must draw two cards whose sum is 9 from a stack of cards numberd 1 through 10 . after the first draw you replace the card and shuffle the stack again for the second draw. what is the chance that your two cards will have a sum of 9
asked by shaunte 
chemistry
What is the ppm of 4.50mg of ddt in 10kg of seal fat?
asked by dd 
chemistry
how much heat has been absorbed by 2500g of water when its temperature changes from 23c to 27c PLEASE EXPLAin
asked by Jim 
Economics
Can someone explain the characteristics of a good tax? simplicity, efficiency, certainty, and equity
asked by Warren 
algebra
The cost of attending Ray's is C(r) = 1.50r + 4 and depends on a flat charge and then a charge for each ride, r. Explain the meaning of the slope in the context of this problem.
asked by Zyere 
math
A tree is 33 and one third ft tall. Why?
asked by josh 
math
noel started going to yoga class on november 3, and went every third day after that. Lana also started classes on november 3, and went every fourth day after that. In how many days will they be in class together again?
asked by May 
Chemistry
Benzene, C6H6, consists of six member ring of sp2 hybridized p orbital. How many (pi)_2p bonding, anti bonding, and nonbonding molecular orbitals exist for benzene?
asked by Harry 
Social Studies
Europe was at War mainly because of who?
asked by Humanoid 
math
what fraction must be added to the difference of 5/6 and 2/3 to have an average of 1/4
asked by chev 
maths
Q: Prove 2/log_8a  4/log_2a= 1/log_4a i tried dividing 1/log_4a by 2/log_4(8)  1/log_4a by 4/log_4(2) to get log_4(8)/2.log_4a  log_4(2)/4.log_4a =log_4(8)/log_4a^2  log_4(2)/log_4a^4 =1.5/log4a^2  .5/log4a^4 =1/.... I don't know how to deal with the
asked by Anonymous 
algebra
you produce 2000 brownies in a month you have a monthly cost of $1500. when you produce 4000 brownies your monthly cost is $2000. assume that each brownie has a constant amount answer the folloing questons : a. write down a linar equation that gives the
asked by josh 
math
how can we check that 46/100 is equal to about 39/85?
asked by giga 
Science Help
Drew is walking back up the best hill in the neighborhood 24* grade. He's pulling on the empty 2.1kg sled with a force of 18N at an angle of 55* with the hill. He's walking with a constant velocity, what is the coefficient of friction?
asked by Toni 
Math
You had 13 of your allowance left on Monday. On Tuesday, you spent 13 of that amount of money. On Wednesday, you spent 13 of what you spent on Tuesday. What fraction of your total allowance did you spend on Wednesday?
asked by Teonbria 
Math
What is the domain of this function f(x)=sin^1 x?
asked by Anonymous 
Math
X is 1 2 3 4 5 Y is 98 96 94 92 90 What is Domain and Range? I know that Domain is all x and Range is all y but how would I put Domain and Range as an inequality
asked by M 
math
0.3 ÷ 0.06 Simplify the expression
asked by Ebonique 
Math
Can you subtract two negative numbers and get a positive difference? What are some examples, if it's possible? Can you add two negative numbers and get a positive sum? (I fairly certain it's not possible, but I'm not sure how to explain why it's not...)
asked by Anonymous 
Middle School Math
My home work problem is 3g+5=17 my answer is 20. A I correct.
asked by Carl 
chemistry
How do u tell of a solute is polor or non polar based on what
asked by dd 
Social Studies
Was fire involved in WW1 and WW2?
asked by Humanoid 
Algebra
Could you double check my math problem please? Thanks 4) −15 + n = −9 MY ANWSER: 6. Thank you :)
asked by HEY 
Algebra 2
Solve each polynomial equation. If a solution occurs more than once, state it's multiplicity. 4x^413^2+9=0 Please show work I need help
asked by Alicia 
Sixth Grade Math
Leland wants to paint a portrait for his parents using a photograph of them that is 5 inches wide by 8 inches high. He wants the portrait to be proportional to the photograph and 42 inches high. Which proportion can Leland use to find w, the width he needs
asked by Mark 
Algebra 2
Factor 8x^31000y^6 Please show work!!!
asked by Ariana 
Social Studies
A picture of Hitler with the captions "Lost at World War II? Did Nazi that coming." ^ Is that picture appropriate to put on my project?
asked by Humanoid 
english
correct the fragments by combining the fragment introduced by a subordinate conjunction with the sentence before or after it to form a complex sentence. He had breakfast. Before he left for school. It was six o'clock. my answer: It was six o'clock. He had
asked by patrizia 
algebra
1) log sub 8 2 + log sub 8 4x^2 = 1 2) ln 2  ln (3x + 2) = 1 3) ln (x  3)  ln (x  5) = ln 5
asked by alex 
science
a 150 gram bullet is fired with a speed of 50 ms if it is stopped after hitting a target 101 meters away what is its initial KE
asked by edi wow 
Chemistry
I am doing a lab and broke my glass beaker. Is it of to put 0.1 M hydrochloric acid in a plastic beaker?
asked by Morgan 
Math
What is 7r + 5
asked by Raquel 
soran univresity
why after added KMnO4 change colored and after that change color KMno4? in Determination of Chloride Ion Concentration by Titration (Volhard’s Method) by using cheese
asked by zagros 
Algebra 1 Ohio 8th grade standards
Got a problem here. Can someone explain how to write an equation in slope intercept form for the line that passes through the point (4,2) and is perpendicular to the graph y=1/2x+1.
asked by lawyer 
Math
In 1974, Johnny Miller won 8 tournaments on the PGA tour and accumulated $353,022 in official season earnings. In 1999, Tiger Woods accumulated $6,616,585 with a similar record. (a) Suppose the monthly inflation rate from 1974 to 1999 was 0.0079. Use the
asked by Ashton 
Algebra 2
Find the real zeros of each polynomial f(x)=5x^340 Please show work I want to learn how to did it
asked by Alicia 
Algebra 2
Use grouping to solve each of the following equations. 36x+2x^3362x^2=0 Please show work I want to learn how to do it.
asked by Alicia 
ComputersHardwares
How many things are there inside the CPU? And what are they?
asked by Jahanara 
Math
Radical ((1sinx)/(1+sinx))= (1sinx)/cosx (absolute) Identity identity
asked by Anonymous 
math
The perimeter of a rectangle is 72. the length of the rectangle is twice the width. Find the dimensions of the rectangle.
asked by Erin 
3rd grade math
Anna uses 1 eraser for every 2 packs of pencils she uses. If she uses 10 packs of pencils in a year, how many erasers will she use?
asked by Justine 
Algebra !
increasing a by b percent yields 12 while decreasing a by b percent gives 8. what is the value of a and b
asked by Roxy 
Math
1/2 * 6 + 9^2  (18/6) = 42 Is my answer correct?
asked by Stephon 
6TH GRADE MATH
Create a number line model that represents the equation below. 5 x 2 = 10 Can some help me please?
asked by Ben 
Math
prove: 1/log(base36)a = 2/log(base6)a i made a common base and then multiplied both sides with log(base6)a to get 2=log(base6)a/log(base6^2)a but this is as far as i can figure.
asked by Anonymous 
science: question
is autoclaving same as heating the tooth?
asked by PeanutJelly 
Mathematics
Insert three arithmetic mean and solve the nth term of 1 and 2
asked by Anonymous 
Algebra 2
find the real zeros of each polynomial f(x)=5x^340 Please show work I want to learn how to did it
asked by Ariana 
English
The excerpt has an example of what literary device? “However, I altered my traps; and not to trouble you with particulars, going one morning to see my traps, I found in one of them a large old hegoat…” —Robinson Crusoe by Daniel Defoe I think it
asked by Jackie