Questions Asked on
January 31, 2012

chemistry
A 141mg sample was placed on a watch glass that weighed 9.203 g. What is the weight of the watch glass and sample in grams?
asked by eric 
physics
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.1 m/s, hoping to land on the roof of an adjacent building. Air resistance is negligible. The horizontal distance between the two buildings is D, and the roof of the
asked by chelsea 
Chemistry
CCl3F boils at 23.8 degrees Celcius, and its molar heat of vaporization is 24.8 kJ/mol. Calculate the molar entropy of vaporization of CCl3F (l)
asked by Kay 
chemistry
A piper delivers 10.04, 10.02, 10.08, and 10.06 mL in consecutive trails. Find the mean volume and the average deviation from the mean...please help some responded but didn't answer the question.
asked by Lisa 
chemistry
A patient has 0.050 L of blood drawn and this volume of blood has a mass of 55.0 g. What is the density of the blood? Answer with the correct number of sig figs
asked by k 
QUANTS
Suppose you are going on a weekend trip to a city that is d miles away. Develop a model that determines your roundtrip gasoline costs?
asked by VEE 
geometry
A cube with edges inch long is shown below. What is the length, in inches, of a diagonal that runs from one corner of the cube to the opposite corner?
asked by shirley 
trig
how can we find the value of sin 720
asked by deeepika 
arithmetic
The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression
asked by Daniel 
trig
The terminal side of θ lies on a given line in the specified quadrant. Find the values of the six trigonometric functions of θ by finding a point on the line. Line: (55/48)x Quadrant:III sin(θ)= cos(θ)= tan(θ)= csc(θ)= sec(θ)= cot(θ)=
asked by andrea 
Trugonometry
Simplify the expression √x2 +1 as much as possible after substituting tan(θ) for x.
asked by Courtney 
Engineering/Chemistry
Milk is flowing through a heat exchanger at a rate of 2000kg/h. he heat exchanger supplies 111,600kJ/h. The outlet temperature of the product is 95C. Determine the inlet temperature of the milk. The product specific heat is 3.9kJ/(kg*C)
asked by Janice 
Physics net force and mass
Four boxes of various masses are placed on a friction free table. Rank these boxes according to net force by listing them in order from greatest to least. A) B) C) D) Thank You :) (the _ kg  are the boxes) =)
asked by Jill 
Math
A farmer has 80 feet of fencing, which she plans to use to fence in a plot of land for a pigpen. If she chooses to enclose a plot along the broad side of her barn, what is the largest area that can be enclosed? (Note: The side along the barn will not
asked by Chelsea 
calculus
Find the equation of the tangent line to the curve y=sqrt(x) at x = c. Put the answer in slope intercept form y=mx+b. Use the definition of the slope of the tangent with no short cuts.
asked by jon 
economics
What is the main difference between macroeconomics and microeconomics?
asked by lalt 
math
10 friends share 7 dollars,what is the fraction?
asked by John 
biology
Which of the following statements about the image show below is not an observation? (The object is a the bug) a. The insect has 3 legs on the left side. B. The insect has a pattern on its back. C. Then insects pattern shows that it is poisonous. D. The
asked by glenn help help help 
Physics
A beam of electrons traveling with a speed of 3.00 x 107 m/s enters a uniform, downward electric field of magnitude 1.17 x 104 N/C between the deflection plates of an oscilloscope (the figure below ). The initial velocity of the electrons is perpendicular
asked by Ashley 
chemistry
The Ka value for HCN is 4.9x10^10. What is the value of Kb for CN?
asked by mary 
chemistry
Can someone answer please Determine the boiling point of water at 698.5 mm Hg?
asked by Lisa 
math
Norman received $60 for working 8 hours. At this rate, how much would receive for working 35 hours?
asked by Kara 
statistics
the distribution of scores on a test is mound shaped and dsymmetric with a mean score of 78. if 68 percent of the scores fall between 72 and 84, what is the stand deviaition
asked by Josh 
calculus
Find a formula for a quadratic function whose graph has a yintercept at y = 21 and only one zero at x = –28.
asked by Anonymous 
physics
a 50kg brick bounces with 98% efficiency when droped from a 10 meter ledge. 1.how much energy does it have at the top of the bounce? 2.how high will it bounce?
asked by 4611star 
Chemistry
If the concentration of a reactant is decreased, will the speed of the reaction increase or decrease? Explain. I understand that if the concentration of a reactant is INCREASED, the frequency of coliision increases, making the rate of reaction increase.
asked by Alexandra 
Chemistry
The order of the boiling points for the hydrogen halides, except for HF, is HI > HBr > HCl. The reason for this order can be attributed to a) the relative covalent bond strengths. b) differences in hydrogen bonding. c) differences in dipoledipole
asked by Ashley 
math
Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. What is the probability of picking a green marble, replacing it, and then picking a brown marble?
asked by Nick 
chemistry
At 20 °C, chloroform (CHCl3) has a density of 1.489 g/mL. What is the mass of 7.52 mL of chloroform at 20°C?
asked by katie 
chemistry
Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen gas. What mass of hydrochloric acid reacts when 87.7 grams of aluminum dissolves? The equation is 2Al+6HCl=2AlCl3+3H2
asked by Kendall 
MATH WORD PROBLEM
MEASUREMENT: A woman is 5 ft tall and her shadow is 4ft long a nearby tree has a shadow 30 ft long. how tall is the tree? my answer i got was; 37.5 ft is that right? a man is standing near a totem pole. the man is 74 in tall. his shadow is 4ft long. the
asked by marko 
PHYSICS
Sheena can row a boat at 2.91 mi/h in still water. She needs to cross a river that is 1.24 mi wide with a current flowing at 1.54 mi/h. Not having her calculator ready, she guesses that to go straight across, she should head 60.0° upstream. (a) What is
asked by Anonymous 
Math
Factor the polynomial as the product of factors that are irreducible over the real numbers. Then write the polynomial in completely factored form involving complex nonreal or imaginary numbers. x^4 + 20x^2 44=0
asked by Chelsea 
chemistry
A light photon with a frequency of at least 0.0906 ~ 1016 Hz is required to split apart hydrogen bromide according to the equation: HBr(g) ¨ H(g) + Br(g) Calculate the energy (kJ) required to break apart a mole of hydrogen bromide. Express answer in
asked by adriana 
Math
When is a wrestler "king of the ring"?
asked by Anonymous 
math
marcia said that if she estimates 73 x 7 ,the product will be less that the exact answer. is she correct ? explain.
asked by john 
Chem 11
Calculate the miles of potassium hydrogen phthalate in your weighed sample. Potassium hydrogen phthalate : 4.0759g
asked by Anonymous 
easy math
I converting 0.001mm to micrometers using staircase method and micro come under millimeter, so that mean move one decimal to right so would it not be 0.01?
asked by Shreya 
Physics
How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?
asked by Elizabeth 
math pre algebra
a kennel owner is buying a new building he want the space for each dog run to be at least 96 square ft the area reserved for the dog ru.s is 30 ft by 60 ft
asked by eddie 
ALGEBRA 2
Use the Rational Root Theorem to list all possible rational roots for each equation. Then find any actual roots. x^3 + 2x^2 + 3x + 6 = 0 (8 points)
asked by help pleaseeeee!!!! 
Physics
A diver springs upward from a board that is 4.10 m above the water. At the instant she contacts the water her speed is 11.9 m/s and her body makes an angle of 79.7 ° with respect to the horizontal surface of the water. Determine her initial velocity, both
asked by Alex 
calculus
I don't know if I'm typing it in wrong into my graphing calculator but I need to estimate the limits of sin(8 theta) / theta
asked by sara 
college algebra
Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by S(t) = 68  20 log (t+1), t > 0
asked by Betty 
math/estimating products
an arena seats 7,893 people.The circus is in town and all of the tickets have been sold. If the circus has 4 performances, about how many tickets were sold?
asked by jimmy 
Chemistry
If you are using 5.25% (mass/mass) bleach solution and you determine that the density of the bleach solution is 1.08 g/mL, how many moles of sodium hypochlorite are present in a 4.00 mL sample?
asked by Rob 
math
what three consecutive months would have the least number of days
asked by megan 
physics
Find the electric potential energy for the following array of charges: charge q1 = +3.0 µC is located at (x, y) = (0.0, 0.0) m; charge q2 = +3.0 µC is located at (4.0, 3.0) m; and charge q3 = −1.0 µC is located at (0.0, 3.0) m.
asked by anybody? 
Math Algebra
Bikes, Trikes and more At Brittany's Bike shop, she rents all kinds of cycles: unicycles, tandems, regular bikes, and even tricycles. She parks all the cycles in front of her shop with a helmet for each rider strapped to the cycles. This morning Brittany
asked by zachary stanich 
math
Bikes, Trikes and more At Brittany's Bike shop, she rents all kinds of cycles: unicycles, tandems, regular bikes, and even tricycles. She parks all the cycles in front of her shop with a helmet for each rider strapped to the cycles. This morning Brittany
asked by zachary stanich 
math
Find the surface area of a small juice can whose diameter is 4 inches and whose height is 6.25 inches. Use 3.14 for ð. Hint: The can is a cylinder.
asked by Anonymous 
physics
A falling stone takes 0.320 s to pass a window 2.30 m high. From what height (in meters) above the top of the window did the stone fall?
asked by jholm 
psychology
Why is Pseudopsychologies so popular?
asked by Lannette 
physics
A golf ball rolls off a horizontal cliff with an initial speed of 14.1 m/s. The ball falls a vertical distance of 14.0 m into a lake below. (a) How much time does the ball spend in the air? (b) What is the speed v of the ball just before it strikes the
asked by chelsea 
math
Ten times a number equals ten more than eight times a number. what is the number?
asked by love 
physics
A charge of +1.96 mC is located at x = 0, y = 0 and a charge of 3.92 mC is located at x = 0, y = 2.85 m. What is the electric potential due to these charges at a point with coordinates x = 4.01 m, y = 0?
asked by Ashley 
physics
Three ants are sitting on the vertices of equilateral triangle of side a. At t=0 and ant 1 starts approaching ant 2 with a speed v ,ant 2 starts approaching ant 3 with a speed v, and ant 3 starts approaching ant 1 with speed v.The three ants meet at the
asked by priyasharma 
algebra
Which value of x makes the following equation true? 7.8(x  2) = 0.2x + 40.4
asked by chris 
chem grade 12
Consider the following substance: Al2(SO4)3 What is the oxidation number of: a) aluminum b) sulfur c)oxygen
asked by sam 
Physics
A van de Graaff generator has a metal sphere of radius 14.2 cm. To what potential can it be charged before the electric field at its surface exceeds 2.01 x 106 N/C (which is sufficient to break down dry air and initiate a spark)?
asked by Ashley 
math
a group of 9 people spent $78 to go to the movies.adult tickets cost$10 each and student tickets cost $8 each.How many adult tickets were purchased?
asked by zack 
Physics
Highvoltage power lines are a familiar sight throughout the country. The aluminum (resistivity = 2.82 x 108 m) wire used for some of these lines has a crosssectional area of 4.4 x 104 m2. What is the resistance of 12 kilometers of this wire?
asked by Morgan 
math
A test has 125 items. Each correct answer earns 1point and 65 percent is a passing grade. If you get 42 answers wrong will you pass? Show working
asked by Devon 
PHYSICS
A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s vertical m from ground??? f the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0.)???? If the
asked by Anonymous 
geometry
Point C is the center of the circle. The measure of angle ACB is 15x + 20. Arc AB measures 20x – 10. Find the measure of arc AB.
asked by kadejah 
probability
There is a .97 chance that no accident will occur during any particular day at a racetrack of local importance. the probability of one accident a day is .02, and the probability of two accidents is .01. a. What is the expected number of accidents in a day?
asked by 12yearoldpoet 
Math
Rubber stripping for a trailer needs to be exactly 2.93 meters long. About how many of these pieces can be cut from a 12meter length of rubber stripping? Estimate by using compatible numbers.
asked by Arianna 
Math
The sticker price of car is $15,800. If the sales tax is 8% what is the total cost? Show working
asked by Devon 
math
Is six yards greater, less than,cor equal to 12 feet?
asked by Someone... 
Management
What are some steps company's can take to "control" its customers, competitors, suppliers, and labor
asked by Anonymous 
Chemistry
The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)> E(g) Delta H rxn=26.1kJ/mol and Delta S rxn=69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.
asked by Kay 
Math
If teacher x gives a pop quiz on Monday and then every five classes, and teacher y gives a pop quiz on Monday and then every six days, how many school days will it be until both give quizzes on the same school day
asked by Teresa 
Math
A person invests a total of 22,00 in 2 accounts. 1 investment earned 7% while the other earned 5.5%. The amount of investments earned for one year was $1312. How much was invested in each account?
asked by Alexis 
social studies  2nd grade
i have a test tomorow . so can you help me ? thank you.
asked by Blair 
physics
A coin is placed on a vinyl stereo record that is making 33 1/3 revolutions per minute on a turntable. In what direction is the acceleration of the coin? Find the magnitude of the acceleration when the coin is placed 18 cm from the center of the record.
asked by colleen 
Comm 100
What statements is true concnerning cultural context/ It involes verbal clues only It is about globalizaiton It is communicated primarily thorugh environment and nonverbal clues
asked by Amanda 
math
The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same crosssectional area as the first story
asked by Anonymous 
math
if you have the numbers 41,67,13,44,25 and they want you to find the mode would there be no mode? I know mode is the number that appears most often
asked by jill 
Math
Merchandise lists for $5,000 with a trade discount of 10% and terms of 5/30, 3/60, n/90. If the purchaser is invoiced on April 12th and payment is made on June 10th, what is the actual amount paid? (Points: 5) $4,275 $4,350 $4,365 $4,500
asked by T. 
Physics
An 845N sled is pulled a distance of 190 m. The task requires 1.70 104 J of work and is done by pulling on a rope with a force of 124 N. At what angle is the rope held?
asked by Ethan 
physics
A space vehicle is coasting at a constant velocity of 22.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.223 m/s2 in the +x direction. After
asked by Alex 
BioChemistry
Which compound is capable of donating a proton (H+)? A. Acetic acid B. Sodium hydroxide C. Acetylene D. Pentane E. Cyclohexane Which of the following statements is not true of a CC triple bond? A. Longer bond length than a C=C double bond. B. 180 degree
asked by Ryan 
algebra
a woodworking project calls for three pieces. the longest piece is twicw the length of the middlesized piece, and the shortest is 10 inches shorther than the middlesized piece. the board os 70 inches. how much must each peice be?
asked by teesha 
math
a grocery store display consists of cases of soda. there are 15 cases at the base, & 1case at the top. if there are 15 rows, how many cases are needed for the entire display? a) 180 b)30 c) 130 d) 15
asked by jessica 
english
Do you believe in putting old people into retirement homes?if yes or no why?or why not?
asked by thembani 
calculus
9e^6ln(A)= A^( )
asked by casey 
math
1. Dan is building a silo on his farm in the shape of a right circular cylinder. The silo has a radius of 20 cm and a height of 60 cm. If he were to increase the radius and height by a factor of 1.5, by what factor would the volume of the silo increase?
asked by Anonymous 
Physics
Karen has a mass of 62.60 kg and she rides the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a distance of 62 m, the longest escalator in the free world. How much work did the escalator do on Karen if it has an inclination
asked by Ethan 
sociology a 3 page paper
C Wright Mills introduces the sociological imagination as both a worldview and the prerequisite of sociological inquiry. He states that the sociological imagination connects history to biography. What does he mean by this? Additionally, explain the
asked by kay 
math
The diagram shows a shape, all the corners are right angles, all the measurements are in cm explain why (x+4) (x +5)  6 15
asked by joe 
calculus
Solve for x: 2x=ex+1
asked by britt 
sociology
i have to write three pages on this topic i need ideas. PLEASE Peter Berger likens sociological discovery to culture shock minus geographical displacement. He also points out that as a sociologist we must peel away the layers of the
asked by kay 
Math
How do you put into scientific notation 6 x 10 to the power of 5?
asked by Li 
calculus
Solve the equation 14=65(19)x for x using logs.
asked by britt 
chemistry
(2.60 x 10^3 x 0.897) + 2.69 (with correct # of sig figs) IS the answer 2334.89
asked by kr 
world history
1)Who became Da vinci,s rival in Florence? Michelangelo 2)What was the mistake Leornardo made with his work the last Supper? leornardo chose to sit Judas in with the rest of the disciples 3)What was the name Da Vinci gave to his appertentice? Can you
asked by nick 
algebra
find x and y 5x3y=4 3x+2y=9
asked by tanya 
trig
starting salary for a job is 30,000 with a guaranteed raise of $5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. how much money would you earn in the fifth year?
asked by lisa 
math
A retailer wants to sell an item that costs $18 at a list price that will provide a 25% markup on the selling price and give the customer a 40% discount. What is the list price? (Points: 5) $20.16 $24.00 $31.50 $40.00
asked by T. 
math
is 5+x and x+5 represent the same expression? explain
asked by blake 
English
I just wanted to know if you have the tradition of "the kindly old woman" in America and if yes, what do you call her? 1) On Epiphany Eve the "kindly old woman" brought me many sweets and a pair of earings. 2) On 8 January I went back to school as all my
asked by Henry2 
calculus
Put the function P=40(39)t in the form P0e^kt. When written in this form, you have: k= ? P0= ?
asked by sara 
English
I varied the sentences considering the students' point of view. Thank you very much for your advice They will be able to: 1)be familiar with the necessary linguistic structures to operate in a global study environment by taking a mainstream GE (General
asked by Henry2 
trig
Prove (1+secx)/(tanx+sinx)=cscx
asked by Matt 
easy math
i want know how to say this in words. I try myself in brackets. i am doing this for bio class so if i have to speak out loud tomorrow i be able to correctly say numbers. 1 585 000 000 ( 1 billion, 585 million hundred thousands) 1 585 000 ( 1 million, five
asked by Shreya 
chemistry
The energy levels the electron can occupy in the He+ ion can be calculated using the energy level equation. Calculate the frequency (Hz) of the photon emitted when the electron goes from a n= 4.00 energy level to a n= 3 energy level. Express answer in
asked by tammy 
math
Explain how 9/12 is greater than 1/2
asked by billy 
Science
What are emotional changes boys and girls experience during puberty?
asked by Sasha 
chemistry
how much water should i add to neutralize 1000 milliliters oh ph 13
asked by Tim 
math
if 5 eighths of a board is erased and 3ft remains, what was the size of the board?
asked by Anonymous 
Calc 3
if r= and r_0= , describe the set of all points (x,y,z) such that magnitude[rr_0]=4
asked by Emily 
math
values for area and length of right triangular prism with volume of 6
asked by nicole 
chemistry
A light photon with a frequency of at least 0.0906 x 10^16 Hz is required to split apart hydrogen bromide according to the equation: HBr(g) > H(g) + Br(g) Calculate the energy (kJ) required to break apart a mole of hydrogen bromide. Express answer in
asked by adriana 
trig
If A=55 degrees 55 minutes and c=16, find a.
asked by Zamaria 
Calculus
Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the? Use the method of cylindrical shells to find the volume V generated by rotating the region bounded by the given curves about y = 8. 27y = x^3, y = 0,
asked by John 
English
Find The Subject and Verb in this sentence. Candle wax dripped onto the table and hardened into pools.
asked by Justin 
Algebra 2
What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please
asked by Gavin 
chemistry
determine the i value for kcl solution
asked by mint 
math
a car traveling on a straight road at 20 meters per second accelerates to 26 meters per second in 12 seconds. what is the total distance traveled by the car? please help!
asked by lisa 
math geometry help
learning geometry i need to determine whether each pair of figures is similar. and explain why or why not: since I cant draw can you help me with this pls im so lost. 1) triangle xyz
asked by marko 
physics
why do xray technicians use lead aprons when they are exposed to xrays while we are exposed to radio waves and are not protected
asked by shirley 
Physics
I just wanted to be sure if I got the answer right 1. Jenny (75 kg) goes on a ski trip. She goes down a slope that's inclined at 15*. Her drag coefficient is 0.300, the area of contact with the air is 0.750 m^2 and the air density is 1,31 kg/m^3. The
asked by Tom 
American Literature
What wave of feminism would Charlotte Gilman ("The Yellow Wallpaper") fall into?
asked by Casey 
economics
i need to write an editioral in a newsletter format regarding the rights and responsibilites of us citzens i don't know how are where to start
asked by chy'anne 
Biology
Give the sequence of a reverse primer used to insert a BamHI site (GGATCC) at the 3' end of the following sequence: 5' CTGAACGTCCAAGGCTTAA 3' 3' GACTTGCAGGTTCCGAATT 5' Make sure you indicate your primers polarity.
asked by Peter Parker 
maths
A certain number has 3 digits.The sum of 3 digits =36 multiplied by the 3digits number.What is the 3 digit number?
asked by mavis 
Physics
Suppose a car is traveling at 14.0 m/s, and the driver sees a traffic light turn red. After 0.500 s has elapsed (the reaction time), the driver applies the brakes, and the car decelerates at 5.00 m/s2. What is the stopping distance of the car, as measured
asked by Anonymous 
math
Can some one help me wit this: Find the exact value of 4cos7(3.14...)/4  2sin(3.14...)/3 please and thank you
asked by Anonymous 
alg2\trig
a colony of 300 bacteria doubles each day. write an explicit formula to determine how many bacteria there would be on the nth day. how would you do this?
asked by jessica 
Math
Eva gives out two sheets of paper to each 30 students. She gives paper to 19 students and has to get more. Howany more sheets of paper does he need?
asked by Evie 
math
Which number is larger in each of the following pairs a.)C(9,3), C (10,2) b.)C(12,4), C (18,3) c.)C(9,3), 6! d.)3^5,5!
asked by Anonymous 
Math
A scooter factory runs two assembly lines, A and B. 97.4% of line A’s scooters pass instruction, while only 94.9% of line B’s scooters pass inspection. 65% of the factory’s scooters come off assembly line A. a) What is the probability that a randomly
asked by Ashley 
Algebra
What is the rule of a function table to find the number of inches in 4, 6, 8, and 10 feet?
asked by Taylor 
math
Lareina understands factors, but sometimes she has trouble finding all the factors of a number. What advice would you give to help her find all the factors of a number? Demonstrate by finding all the factors of 110. I NEED HELPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!
asked by Gabby ( 5 grade) 
math
march madness is a tournament of the top 64 NVAA basketball teams. at the end of each round there are half as many teams as there were the previous round. there are 6 rounds total. at the end of the tournament, how many games have been played?
asked by dianela 
math
i have 250 and my brother has 150 find the ratio of my brother money to mine
asked by emma 
8th grade math
1. The area shown below will be used for the elementary school playground. What is this area? How much fencing is needed to enclose the playground? Use 3.14 for the value of pi. d= 4 yds for the half circle, w=10 yds. for width of rectangle, and length = 4
asked by Anonymous 
Math
When Jill woke up in the morning, the outdoor temperature was 3 degrees below zero. What integer represents the temperature?
asked by Isaiah 
Algebra 2
What is three root 1/3 ? I'm not sure if that looks right in words, but I don't know how to post the square root symbol. If that doesn't make sense, then pretend that this sign: % is a square root: 3 %1/3 The 3 looks like it's a little above it. Please
asked by Gavin 
social studies
when and where were clothes first made
asked by vickie free 
physics
If someone kicks a soccer ball across a flat parking lot with an initial velocity of 19.0m/s @ 19 degrees, how long will the soccer ball be in flight and how high above its launch point will the ball go? What would be the x and y components of this
asked by matt 
Chemistry  thanks
In a thin layer chromatography (TLC)experiment,the TLC plate was predeveloped in the development chamber containing the mobile phase (to remove any contaminants before use),then air dried. On the same day,the TLC plate was then spotted with the sample &
asked by Anne 
finance
Indexing exemptions for inflation. Each year, the Internal Revenue Service adjusts the value of an exemption based on inflation(and rounded to the nearest $50). In a recent year, if the exemption was worth $3,100 and inflation was 4.7 percent, what would
asked by shanty 
English
Hello. I will really appreciate some help from a native speaker of English. Which is correct, "this" or "that",(maybe, both?)in the following context: 1)He signed this/that (?) contract last week. 2)This/that(?)letter was prepared yesterday. Do "past"
asked by Ilma 
math
What other number besides 30, have 2, 3, and 5 as factors?
asked by Gabby ( 5 grade) 
chemistry
In class, we did a decomposition reaction of sodium hydrogen carbonate, which makes water, carbon dioxide, and sodium carbonate. How do you know when sodium hydrogen carbonate is completely reacted?
asked by Anita 
algebra
Lisa is planning to put a border around the edge of a circular table. She needs to know how long the border needs to be so that she can buy the material. Which measurement does Lisa need?
asked by Pedro 
Math
A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20pint container?
asked by Bridgett 
chemistry
what is the heaviest element with a single letter symbol?
asked by stephanie 
Math
A certain size bottle holds exactly 4/5 pint of liquid. How many of these bottles can be filled from a 20pint container?
asked by Bridgett 
algebra
you can rent a boogie board at tybee island for a $ 10 flat fee plus $.50 for each hour.The situation can be modeled by a linear eqution.What is the slope
asked by kim 
Physical Science
A bicycle and its rider together have a mass of 80 kg. If the bicycle's speed is 6m/s, how much force is needed to bring it to a stop in 4 seconds.
asked by Aubree 
Math
Catherine's dental appointment took 3/4 hour. She left the dentist at 11:10 A.M. What time did her appointment begin? F. 11:40A.M. G. 11:55A.M. H. 10:25A.M. J. 10:55A.M
asked by Andrew 
chemistry
For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.
asked by mary 
chemistry
For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation.
asked by mary 
Physical Science
A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?
asked by Maci 
physics
At high speeds, a particular automobile is capable of an acceleration of about 0.510 m/s^2. At this rate, how long (in seconds) does it take to accelerate from 95.0 km/hr to 101 km/hr?
asked by jholm 
Math
I don't understand this quadratic equation: The ratio of the measures of the length and width of a rectangle is 5:7. the area of the rectangle is 1,715 square feet. Find the dimensions of the rectangle.
asked by Elizabeth 
science
if a globe has a diameter of 0.5 meters write the globes scale as a ratio. What distance on earth would 1 centimeter on a globe represent
asked by Jordyn 
math
estimating products writing to explain .each video game at an arcade requires 375 tokens. tom has 2,000 tokens . he said he can play 6 games. is he correct ? explain.
asked by carla 
English
Hello. Will you please help me with one more question? Is it possible to use "currently" in reference to the past, for example: "He was currently working for a large company." (meaning  at that time) Thank you very much.
asked by Ilma 
geometry
You are wrapping a gift box that is 15 inches long, 12 inches wide, and 4 inches deep. Use a net to find the length and width of a single sheet of paper that could be used to wrap the entire gift box.
asked by Cheyenne Smith 
Culturally Diverse Backgrounds
a young Asian child would probably be less engage in backchanneling than a middle class American child does because?
asked by rhonda minnis 
math
WHAT IS 1/3 OF $66.00
asked by Anonymous 
math
a community center charge a monthly fee of $7,plus $5 rach time you use the swimming pool. write an expression for the total cost of swimming n times in a month
asked by zed 
science
I have a test tomorrow and i need to be able to say what type of bacteria something is in their agar colonies. I am having a hard time diffirentiating between bacillus cereus and bacillus subtilis. does anyone have any good websites that would help? or
asked by martha 
media
9. How is culture reflected in movies and television?
asked by Anonymous 
chemistry
For each solution whose pH value deviated from 7.0 by at least 1.0 pH unit, give an equation accompanied by a statement which gives the reasons and/or explanation for the deviation. pH values: NaCl 6.89 NaC2H3O2 7.75 Na2CO3 11.20 Cu(NO3)3 4.73 NH4Cl 5.91
asked by mary 
college algebra
Please show me how to work this e^.05t =1600
asked by Betty 
math
number sense . is the product of 4 x 8,827 less than 36,000? how do you know ?
asked by reny 
Probability
If a bag contains 2 square, 4 triangles, and 4 circles, what is the probability of picking a square on the first draw from the bag?
asked by Red 
chemistry
Find the mass of urea needed to prepare 51.7 g of a solution in water in which the mole fraction of urea is 7.59×10−2. anyone have the same values?
asked by jazz 
chemistry
At 22 degrees Celsius and a pressure of 755 mm Hg, an unknown gas was found to have a density of 4.52 g/L. When analyzed, the gas was found to consist of two elements: Boron at 78.1% and Hydrogen at 21.9%. What is the molecular formula of this unknown gas?
asked by tom 
math
therebare 365 days in a year. about how many days has Jared lived if he has reached his 8th birthady?
asked by mia 
chemistry
A 100.0 gram sample of iron at 80.0 degrees Celsius was placed in 150 grams of water at 20.5 degrees Celsius. What was the final temperature when thermal equilibrium was reached?
asked by tom 
US History
What is the historical significance of impeachment?
asked by Shelby 
Culturally diverse backgrounds
A five year old ___ American child used to enjoy choosing her playmates and activity center on the playground, but after her mother visited and oberved the free play time, the child abruptly stopped this activity. a. Mexican b. native c. japanese
asked by rhonda minnis 
Physics
You throw a ball straight down from an apartment balcony to the ground below. The ball has an initial velocity of 5.20 m/s, directed downward, and it hits the ground 2.10 s after it is released. Find the height of the balcony.
asked by Haze 
Trig
Prove (1+secx)/(tanx+sinx)=cscx
asked by Matt 
physics
A hydrogen atom has a single proton at its center and a single electron at a distance of approximately 0.0537 nm from the proton. What is the electric potential energy in joules?
asked by anybody? 
MathStatisticsplease doublecheck my answers
In the fall of 2000, 54% of the almost 34,000 firstyear students attending one of the California State Universities had strong enough math skills to take an entry level course. 1)Based on a sample of 20 students, can we assume our calculations will be
asked by Mandy 
social studies
What did the United States gain from the War of 1812?
asked by stephanie 
Trig
Solve the following trig equation 2cos(xπ/6)=1
asked by Matt 
physics
what happens when a liquid is being heated at its boiling point?
asked by doris nyirongo 
English
I left out the following sentences.Thank you very much. 1) The day after Christmas my uncles from Liguria visited us. 2) The day after their visit I started my homework and I did't manage to finish it before the beginning of the school. 3) On 30 December I
asked by Henry2 
math
If an injectable drug contains 25mcg/0.5ml, how many mls will be required to provide a patient with a dose of 0.25mg?
asked by Vicki 
Chemistry
If you are using 5.25% (mass/mass) bleach solution and you determine that the density of the bleach solution is 1.08 g/mL, how many moles of sodium hypochlorite are present in a 4.00 mL sample?
asked by Rob 
Math
what is the gcf of 35 and 1,715
asked by Ryan 
Math
What numbers exactly divide the ff.? 111 522 505 2 320 1 602 3 732 189 325 13 854 255 168 729 Thank You!
asked by Sean 
physics
suppose the you push with a 40N horizontal force on a 4kg mass resting on a horizontal surface against a horizontal friction force of 24N. show that the acceleration is 4 m/s2
asked by Anonymous 
physics
A certain capacitor stores 473 J of energy when it holds 7.91 x 10−2 C of charge. What is the capacitance of this capacitor? What is the potential difference across the plates?
asked by Ashley 
maths
A loaf of bread is normally distributed with a mean of 22 oz and a standard deviation of 0.5 oz. What is the probability that a loaf is larger than 21 oz?
asked by atul 
English
I urgently need you to revise these sentences. Thank you very much! 1) On my first days of holiday I read a book, tidied my room and helped my mum to make buiscuits for all our family. 2) On Christmas Eve I went to the gym to do my callisthenics practice.
asked by Henry2 
math
abbi invested 1,500 dollars in a certificate of deposit with a simple interest rate of 4 percent. find the interest earned in 6 years. then find the total of principal plus interest
asked by iconiac and a granderz fan 
Math
An inherited trait that helps an organism survive and reproduce is called A. an adaption B. a species C. an evironment D. a niche A? 2. Which best describes the way structural adaptions occur? A. quickly in a shor period of time B. slowly over thousands of
asked by Brayden 
Measurement:: Metric Units
A classroom table is 1 m wide and 1.75 m long. How many 39 cm wide chairs can fit around the table?
asked by Joe 
Physics
A long, straight wire has a uniform linear charge density of 7.50X10^4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.
asked by Angelo 
math
Explain how you can tell 26 over 100 is greater than 1 over 4????
asked by Nina 
GEOMETRY PLS HELP
learning geometry i need to determine whether each pair of figures is similar. and explain why or why not: since I cant draw can you help me with this pls im so lost. 1) triangle xyz
asked by marko 
Physics
A long, straight wire has a uniform linear charge density of 7.50X10^4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.
asked by Angelo 
physics
A kangaroo jumps to a vertical height of 242 cm. How long (in seconds) was the kangaroo in the air?
asked by jholm 
Algebra 2
How do you simplify this expression 3/4(20a+12)+1/4(20a+12)
asked by Rhyneakqua 
Chemistry
Which compound below would be expected to have the highest boiling point? a) CH3CH2CH2CH2CH2CH2CH3 b) CH3CH2CH2CH2CHCH3  CH3 c) CH3CHCH2CHCH3   CH3 CH3 d) CH3  CH3CHCCH3   CH3 CH3 I think its A?
asked by Sam 
english
can you pl rewrite the following sentence 1.the glass broke because you were careless if you _________________________________
asked by R S Telagathoty 
Physical Science
The string of a certain yoyo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yoyo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yoyo.
asked by Kristen 
Chemistry
Which compound below would be expected to have the highest boiling point? a) CH3CH2CH2CH2CH2CH2CH3 b) CH3CH2CH2CH2CHCH3  CH3 c) CH3CHCH2CHCH3   CH3 CH3 d) CH3  CH3CHCCH3   CH3 CH3 I think its A?
asked by Sam 
Math
Please match each number with its best example. Some values will need to be changed into a decimal format. A. Recurring Decimal B. Mixed Number C. Nonrepeating Decimal D. Finite Decimal E. Decimal Examples: ½ 5½ π 0.375 ⅓ I think 5½ is B and ⅓ is
asked by Jess 
Chemistry
Which compound below would be expected to have the highest boiling point? a) CH3CH2CH2CH2CH2CH2CH3 b) CH3CH2CH2CH2CHCH3  CH3 c) CH3CHCH2CHCH3   CH3 CH3 d) CH3  CH3CHCCH3   CH3 CH3 I think its A?
asked by Sam 
trig and algerba
6+7(t  1) = 5(t + 7) + 8 what does t equal
asked by Anonymous 
physics.
When temperature changes during the day, which scale, Celsius or Fahrenheit, will read a smaller change? and why?
asked by anonymous 
englishcan
can you pl correct the following : is this the person which you are talking about him ?
asked by R S Telagathoty 
Chemistryhelp needed
I have a question on thin layer chromatography (TLC). My mobile phase (i.e. developing solvent) is a mixture of 2 nonpolar solvents. After preparing the mobile phase, is it necessary to pour some into the developing chamber to saturate the chamber or
asked by Anne 
Geom
solve for the value of x. C:\Users\Emily Shae\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\3J5934JU\paint[1].jpg please help me.. i don't want the answer just how to solve
asked by Lexi 
Precalculus
Solve for x, 0
asked by jake 
English
I'm posting you the ones I'm really unsure of. 1) The day after their visit I started my homework and I did't manage to finish it before the beginning of the school. 2) On 30 December I was with a group of friends. I spent the rest of my holiday meeting my
asked by Henry2 
math
The product of two consecutive intergers is 56. Find the intergers.
asked by Annie 
calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
asked by Anonymous 
math
kevin says that 22 over 30 is greater than 22 over 32.Do you agree?Explain.
asked by Nina 
calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
asked by Anonymous 
Reading
1. Everyone hates frozen peanut butter sandwiches. Answer: O Circle:Everyone 2. The secretary keeps the peanut butter sandwiches in a refrigerator in the faculty room. Answer:F 3. Money was stolen three days in a row from students. Answer: F 4. Diane is
asked by Brayden 
Physics
Capacitors are used in many applications where you need to supply a short burst of energy. A 143 μF capacitor in an electronic flash lamp supplies an average power of 12.6 kW to the lamp for 2.95 ms. To what potential difference must the capacitor
asked by Ashley 
calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
asked by Anonymous 
calculus
If 25000 people board a ship at a rate of 400 per hour for 10 hours a 37 minutes a day. How long will it take for them to all board the ship?
asked by Anonymous 
physics
What is the angle between vector b and the positive xaxis? b = 18.2 x + 6.4 y
asked by qwertzuiop 
Chemistry
suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s1. calculate the spring constant of this silicone band including units.
asked by Kyle 
English
Could you please check the following sentences, please? Thank you. 1)I'm still waiting to receive an answer from the principal of the German school to see if they are willing to accept your school in our Comenius partership. 2) In any case, our science
asked by Henry2 
Physics
A boy tosses a football upward. If the football rises a vertical distance of 1.3 m and the boy catches it at the same point he released it, what is the velocity of the ball just before he catches it?
asked by Haze 
English
I left out the following sentences. Thank you very much for helping me. 1) As for our Comenius project on biodiversity in water, I'm attaching a copy of the European module the coordinating school has to fill in by 21 February. 2) Do you think you could
asked by Henry2 
Physics
Two parallel plates are 4.85 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 5.51 x 104 N/C in the region between the plates. What is the time required for an electron, which
asked by Ashley 
english 114
can anyone please help me? I am having to write an essay on Protecting Freedom of Expression by Derek Bok ,I have come up with a thesis but my teacher says no can some one help me with a arguemental thesis. new thesis how does this sound? Thesis: Using
asked by sharon 
calculus
what is the solution of this inequality?: x+3/x^25x+4>_0?
asked by Destiny 
statistics
hhh
asked by Anonymous 
Chemistry
Three factors control the rate of evaporation of a liquid: surface area, temperature, and strengths of intermolecular forces. More than one of the statements given described a correct effect. The statements are (1) the larger the surface area, the faster
asked by Anna King 
calculus
what is the solution of this inequality?: x+3/x^25x+4>_0?
asked by Destiny 
economics
Which of the following is a FALSE statement? A. Changes in the price of inputs can cause a shift in supply. B. If the price of other goods change, it can cause a shift in supply. C. Government involvement in the economy will not cause a shift in supply. D.
asked by lalt 
Physics
A particle is initially moving along the positive xaxis at a speed of 9.90 m/s. After 2.40 s, the particle is moving along the negative yaxis at a speed of 4.71 m/s. Find the x and y components of the particle's acceleration.
asked by Hanna 
Physics
A plane is flying west at 214 km/h. The wind is blowing south at 108km/h. a what is the ground speed of the plane b In what direction does the plane travel
asked by Shekinah 
Business
I want to buy a house in 3 years. I need to have a down payment of $20,000. How much do I need to have today in order to have that if I can earn 4.5%?
asked by Rene 
Math
The product of two consecutive odd intergers is 143. Find the intergers.
asked by Jessica 
Business
I want to retire in 20 years. I think that I need $500,000. I have $200,000 set aside right now. If I earn 5.25%, will I have enough? How much do I need to have today in order to achieve that?
asked by Rene 
Business
I am looking at buying a new Camry. I think I can talk them down to $19,000. If the bank is willing to finance it for 60 months at 3.75%, what would my monthly payment be?
asked by Rene 
Social Studies 7R  Qs. Check
What is Preamble? I know the pre part is before but what about amble? My Answer: Intro of the Declaration of Independence. Is my answer is correct.
asked by Laruen 
Chemistry
Is (NH4)2 CO3 ionic or covalent?
asked by S 
psy
A study wants to examine the relationship between student anxiety for an exam and the number of hours studied. The data is as follows: Student Anxiety Scores Study Hours 5 1 10 6 5 2 11 8 12 5 4 1 3 4 2 6 6 5 1 2 Why is a correlation the most appropriate
asked by Nicole 
math
1 3/4, 1 9/10, 1 1/2 in a numberline from least to greatest
asked by aaliyah 
chemistry
For the balanced equation shown below, how many grams of O2 reacted, if 98.0 grams of HCl are produced? 2C6H4Cl2+7O2=>12CO+2H2O+4HCl
asked by Alen Maslo 
Math
Angie's horse ran 3 miles in a race at the county fair. How many yards did her horse run? A.528yd B.5,280yd C.15,840yd D.1,584yd B? 2. What is the relationship between 75cm and 1m? F.75cm is 3/4 of 1m G.75cm is 1/4 of 1m H.75cm is 1/2 of 1m J.1cm is 2/3 of
asked by Andrew 
biology
If I had an experiment where I was testing how the membrane permeability is affected by ethanol, and by doing this had to observe thin onion slides with different ethanol concentrations and had to count how many nuclei were seen through the microscope once
asked by anonymous 
english
I really need someone to help with errors. Teenagers and Driving: A Dangerous Combination Teenagers and vehicles can be a very dangerous combination. Teenage drivers are four times more likely to be involved in a motor vehicle crash than drivers of older
asked by Joel 
Algebra I
How do you put into scientific notation 6 x 10 to the power of 5?
asked by Li 
English
I have to write a conversation between two characters from Groom Service by Michael Dorris(shot story)Is there is anyone who had read this story and wrote dialouge fot it? Please help :(
asked by Sarah 
college alg
A particular style of shoes costs the dealer $97 per pair. At what price should the dealer mark them so he can sell them at a 10% discount off the selling price and still make a 30%profit?
asked by love 
Thermodynamics
Streptomycin, an antibiotic, is produced on a large scale in the United States. The purified solution contains 50 wt% streptomycin water. Preparation of 500 mL intravenous (IV) drip solution bag requires addition of diluent and preservative. The diluent
asked by debbie 
Biology
Yellow genes are recessive to green; green are dominant to both red and yellow. Which color of genes disappeared faster when the environment was hostile to them? Why?
asked by Nae 
math
a quarter dropped from rest covers how much distance free falling for 10 seconds
asked by gary 
Biology
We did an assignment called the tooth pick fish and the yellow fish were in danger then all the green fish disappeared because they were in a hostile environment i don't fully under stand this question though Have any genes disappeared entirely?
asked by Nae 
Math
How much is 0.123 in m?
asked by Linsay 
biology
How does an observation about an object differ from an inference about that object. I Really need help on biology Thank you
asked by glenn help help help 
Physics
The figure shows the treatment of fractures of the humerus shaft with a cast of the upper arm bent by 100 to 110 degrees at the elbow joint, and an attached traction device. The traction device keeps the upper arm under tension to lower the risk of
asked by Sally 
physics
A motorcycle traveling 91.0 km/hr approaches a car traveling in the same direction at 83.0 km/hr. When the motorcycle is 52.0 m behind the car, the rider accelerates and passes the car 16.0 s later. What is the acceleration of the motorcycle (in
asked by challom 
Math
2y^2 8y 3 = 0 please solve
asked by Amir 
Math
2y^2 8y 3 = 0 please solve
asked by Amir 
Math
2y^2 8y 3 = 0 please solve
asked by Amir 
Math
2y^2 8y 3 = 0 please solve
asked by Amir 
algebra
3a+5b=4 4a+3b=2 find a and b please
asked by tanya 
Math
2y^2 8y 3 = 0 please solve
asked by Amir 
psychology
Why is Pseudopsychologies so popular?
asked by Lannette 
math
How do figure out,5/8 + 5/6,=
asked by brandi 
Algebra 2
A factory is producing DVD and Blu Ray discs. For each case of DVDs they make $180 profit. For each case of Blu Ray they make $250. The DVDs take 3 minutes of machine time and 7 minutes of labor. The Blu Rays take 4 minutes of machine time and 12 minutes
asked by Precious 
chemistry
How much heat (in ) is required to warm 11.0 of ice, initially at 13.0, to steam at 111.0? The heat capacity of ice is 2.09 and that of steam is 2.01
asked by Anonymous 
chemistry
Suppose that 1.78 x 10^3 kg of Fe are obtained from a 5.80 x 10^3 kg sample of Fe2O3. Assuming that the reaction goes to completion, what is the percent purity of Fe2O3 in the original sample?
asked by Joe 
personal finance
At what age do you hope to retire? How do you plan to incorporate your retirement in your personal financial plan?
asked by tahesia 
physics
A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.
asked by Laycee 
physics
A car starts at a position of x=6 ft and has a speed of 7 mph. After 24 s the car has a speed of 40 mph. Determine the magnitude of the car's average acceleration during this time.
asked by Jamie 
divide
57 divided by 2 use estimation
asked by brayden 
physics
suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s1. calculate the spring constant of this silicone band including units.
asked by Kyle 
Algebra 2
A factory is producing DVD and Blu Ray discs. For each case of DVDs they make $180 profit. For each case of Blu Ray they make $250. The DVDs take 3 minutes of machine time and 7 minutes of labor. The Blu Rays take 4 minutes of machine time and 12 minutes
asked by Precious 
CHEMISTRY
1) An NaOH solution of unknown concentration is titrated with HCl. 51.9 mL of 0.400 mol/L HCl will neutralize 75.0 mL of the NaOH. What is the concentration of the NaOH solution ? Record your answer in decimal notation. I think the answer is 0.277 mol/L.
asked by TIANDRA 
geometry/algebra
at 5pm a person 5 feet tall casts a 10 foot shadow. at the same time a flagpole casts a 40 foot shadow. what is the height of the flagpole?
asked by sarah 
algebra
Abigail's car uses 3 2/3 gallons of gas every hour on a long distance trip. How many gallons does the car use in 8 1/2 hours?
asked by gianna 
algebra
2/y+p=3/q
asked by Anonymous 
math
How many 9 inch square tiles are needed to cover a table top that is 3 feet by 3 feet?
asked by Kimberly 
math
1.4/9 and 1/5
asked by brandi 
chemistry
A man who is 5ft tall weights 140 lbs. What is his height in centimeters and his mass in kilograms?
asked by kia 
Chemistry
I have a question I want to make sure I'm going in the right direction. The question states give a diatomic element which is not a gas could the answer be any of the noble gases
asked by Tiffany 
physics science
Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou
asked by chloe 
Algebra1
Mrs.Culowski traveled 24.0 kilometers north and then 10.0 kilometers east. How far was she from her starting point? use pytheorn Theorm i need help seting up the problem?
asked by Anna 
Algebra 2
Determine the solution to the system y≤2x2 y≥x3 Show work
asked by Precious 
chemistry
Determine the boiling point of water at 698.5 mm Hg.
asked by Lisa 
Algebra 2
Determine the solution to the system y≤x+6 2x+y≤6 show work
asked by Precious 
math
The wall height, d, of the first story is 11 feet. The center height h of the second story has not yet been determined. Find h such that the second story will have the same crosssectional area as the first story
asked by Anonymous 
engineering science
A 250 cc motorbike must accelerate from rest to 126 km/h in 150 m in 10 seconds. Draw a velocity/time graph of the movement. (Hint: change km/h to m/s
asked by kabelo 
chemistry
A piper delivers 9.97 g of water at 20c. what volume does piper deliver?
asked by Alicia 
math
Can some one help me wit this: Find the exact value of 4cos7(pi)/4  2sin(pi)/3 please and thank you
asked by Anonymous 
Algebra 2
Solve the system y=4x+4 y=x5 show work
asked by Precious 
physics
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.3 m/s at an angle of 43.0˚ above the horizontal. It rises to its maximum height and then falls down to the green.
asked by chelsea 
Algebra 2
Solve the linear system 4x+4y=2 y=x show work
asked by Precious 
chemistry
A piper delivers 10.04, 10.02, 10.08, and mL in consecutive trails. Find the mean volume and the average deviation from the mean.
asked by Alicia 
math
or each month jack works he earns an increase or raise of $. 05 on his hourly pay if he has already worked for three months, which shows his 4th month's hourly rate in terms of his first month's hourly rate?
asked by dani 
Precalculus
When a projectile leaves a starting point at an angle of elevation of theta with a velocity v, the horizontal distance it travels is determined by: d=v^2/(32) sin2theta Where d is measured in feet and v in feet per second. An outfielder throws the ball at
asked by jake@Reiny 
Algebra 2
Tell how many solutions this system has x4y=2 x+4y=2
asked by Precious 
science
Imagine that you are the scientist who discovered cells. If you were to give a speech to a group of fellow scientists, what key points would you include that describe your accomplishments? What are some that would help?
asked by 12yearoldpoet 
chemistry
if 3.60g of NaCl is dissolved into 75.00mL of water, what is the concentration of this salt solution, in m/v%?
asked by john 
physics
A fire hose ejects a stream of water at an angle of 38.3 ° above the horizontal. The water leaves the nozzle with a speed of 29.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the
asked by chelsea 
science
Runner A is initially 5.0 km west of a flagpole and is running with a constant velocity of 4.5 km/h due east. Runner B is initially 7.0 km east of the flagpole and is running with a constant velocity of 6.5 km/h due west. How far are the runners from the
asked by Anna 
Math
1.Angie's horse ran 3 miles in a race at the county fair. How many yards did her horse run? A.528yd B.5,280yd C.15,840yd D.1,584yd B? 2. What is the relationship between 75cm and 1m? F.75cm is 3/4 of 1m G.75cm is 1/4 of 1m H.75cm is 1/2 of 1m J.1cm is 2/3
asked by Andrew 
chemistry
A 141mg sample was placed on a watch glass that weighed 9.203 g. What is the weight of the watch glass and sample in grams?
asked by eric 
chem
the RDA of the amino acid lysine is 12 mg per kg of body weight. How many grams per day should a 77.0 kg adult receive?
asked by lou 
American history
term for people who farmed rented land and 75% of southern whited
asked by Jaysun 
math
Randy had a sheep that started eating more and more as each day passed.On July 1,Randy’s sheep ate 5 carrots. On July 2,Randy’s sheep ate 11 carrots. On July 3, the sheep ate 18 carrots. How many carrots will the hungry sheep eat on July 30th?
asked by Anonymous 
engineering science
If a person has a mass of 83 kg, what will that person weigh in newton
asked by kabelo 
math
how do i calculate cost per minute if the movie budget was 80 million and it 's run time is 85 minutes?
asked by bethann 
physics
Charges of +2.38 nC and 1.06 nC are located at opposite corners, A and C, respectively, of a square which is L = 1.13 m on a side (as shown in the figure below ). What is the electric potential at a third corner, B, of the square (where there is no
asked by Ashley 
MATH
Explain how to find the sum negative sixtyfive plus positive fortyone using a number line, then give the answe
asked by cha 
chemistry
(3.84 x 103 x 0.764) + 1.59 answer with the correct sig figs
asked by k 
arithmetic
5 days a week in a 12 x 12 room 8 hours a day for 5 months approximate amount of electricity used
asked by Anonymous 
chemistry
An antibiotic is sold in 4.0 mL ampoules that contain 60.0 mg of drug (60.0 mg/ 4.0 mL). How many milliliters of the antibiotic should be withdrawn from the ampoule if 20 mg are to be administered to a patient?Answer with the correct number of sig figs
asked by krystal 
physics science
Please can you help as I am stuck, Describe ib detail, how you would carry out an investigation to measure the density of a block of aluminium? Thankyou
asked by chloe 
Child development
What interesting materials and experiences might promote cognitive and language growth in preschool age children?
asked by Adrienne 
trig
Find the indicated trigonometric function, given that è is an angle in standard position with the terminal side passing through the given point. 2) (15, 20); Find csc è. A) 5/3 B) 3/4 C) 5/4 D) 4/3
asked by bhangu 
English
I didn't notice the spelling mistake. Could you please check which alternative is best? Thank you. 1) I did't manage to finish my homework before the beginning of the school. 2) On 30 December I was with a group of friends. (I spent New Year's Eve with a
asked by Henry2 
Math
the total of 14 and difference number and 2
asked by Bb 33 
chemistry
When 15.5 + 0.125 + 2.55 are added, the answer with the correct number of significant figures is
asked by katie 
english112
Using unwise methods such as hanging a confederate flag to express ones' right to speech cause controversy among students and communites can this work as a thesis for the essay expressing freedom of speech on campus by derek bok
asked by sharon 
clasa a6a
construiti un triunghi dreptnghic in care: a)catetele au lungimea de 5 cm si 2,5 cm
asked by gometrie 
chemistry
You are traveling in a country that uses the metric system. Your child is sick and a nurse determines her temperature to be 40.8 ºC. What is this temperature in ºF?
asked by kr 
algebra
solve the system y=x+3 y=3x+7
asked by Anonymous 
chemistry
A kitten's normal body temperature is 102ºF. Express this temperature in ºC.
asked by kr 
math (Urgent)
What is the angle (in standard position  i.e. measured counterclockwise from the positive xaxis) formed by a line from the origin to point (1,2)? Please help and Thank you
asked by Anonymous 
Math 543 help
Suppose you have a pizza. (a) What is the maximum number of pieces you can make with 4 straight cuts? (b) What is the maximum number of pieces you can make with n straight cuts?
asked by deadlove 
chemistry
What are the acids in the house?
asked by Natasha 
chemistry
Zenapax® is used as part of immunosuppressive therapy for transplant patients. The dosage is calculated on the basis of 1.0 mg/kg. What is the proper dose for a 175 lb patient? (Given: 1kg = 2.205 lbs)
asked by kr 
Math
Product costs are increased by the presence of middlepersons in the distrubution channel. (Points: 5) True False
asked by T. 
Chemistry
The following reaction has the following standard thermodynamic parameters: Reaction: C(g) + D(g)> E(g) Delta H rxn=26.1kJ/mol and Delta S rxn=69.8J/(mol*K). Calculate the temperature at which the reaction becomes nonspontaneous.
asked by Kay 
Science
I do not need a link, just a straight up answer please. What are 3 saftey tips you can give me for 'Tornadoes'?
asked by Sarah 
math
16 9 inch square tiles
asked by Anonymous 
chemistry
Ethanol has a density of 0.780 g/mL. What volume would 500. grams of ethanol occupy. Answer with correct number of sig figs
asked by kr 
MATH. HEEEELP.
y=12^x What does this mean and how do you explain it on a graph?
asked by He's not all bad like his reputation </3 
math
Determine the extension amount of the following order: Product X: 10 units @ $2.35 each Product Y: 12 boxes @ $6.15 per box Product Z: 3 dozen @ $12.20 per dozen (Points: 5) $20.70 $133.90 $172.50 $536.50
asked by T. 
organic chemistry
An unknown H2So4 sample of 25.00mL vl is titrated with 0.149 M NaOH. If 45.22mL of NaOH were needed to reach the pink endpoint, what was the molarity of the unknown acid? Show work using conversion factors????? H2SO+2NaOH > Na2SO4+2H2O Dont know where or
asked by April 
Management
What are some steps we can take to prepare an person to work in another country?
asked by Anonymous 
science
How much work is done by an applied force that moves two charges of +7.8 µC that are initially very far apart to a distance of 3.8 cm apart
asked by Andrew 
Science
Can you tell me one time a tornado actually took place in the world and which tornado was it?
asked by Victoria 
Physical Science
A man has a mass of 70 kg. A) What would his weight be on Jupiter which as an acceleration of gravity of 25m/s^2? B) What would the mass of a person have to be in order for him to weigh that amount on earth?
asked by Kristen 
Math
What is the angle (in standard position  i.e. measured counterclockwise from the positive xaxis) formed by a line from the origin to point (1,2)? Please help and Thank you
asked by Anonymous 
Physic
Two charges of equal magnitude of 2C and mass of 1.0 g are separated by a distance of 3 mm. Find the velocity of one particle when they are separated by a distance of 4mm.
asked by Catherine 
Chemistry
The density of sulfuric acid is 1.82g/mL. What volume of sulfuric acid is needed to obtain 98.0g of sulfuric acid
asked by Lori 
Pleaseeeee help! on science
Can you explain a watch and a to me on tornados
asked by Porsha 
Precalculus
When a projectile leaves a starting point at an angle of elevation of theta with a velocity v, the horizontal distance it travels is determined by: d=v^2/(32) sin2theta Where d is measured in feet and v in feet per second. An outfielder throws the ball at
asked by jake 
trig
How can I find the exact value of 4cos(7ð/4)2sin(ð/3)?
asked by Anonymous 
calculus 2
1.Find the length of the curve y=ex+1e−x between x=0 and x=1.
asked by Anonymous 
Psychology
Using the format of an experimental writeup*, describe (and illustrate) 2 of the following 3 important Behavioral/Learning experiments: 1) Seligman’s “Learned Helplessness” experiment 2) Skinner’s “Latent Learning” experiment 3) Bandura’s
asked by Giselle 
math
Leah is throwing discs onto a board numbered 1 to 20. To win a prize she needs to hit two numbers whose product is 85 and whose sum is 22. what are the numbers?
asked by Anonymous 
business law  Contracts
Jeff wanted to sell his motor boat. He offered it to Sally for $3700. Jeff knew that he intended to remove some special water skiing equipment from the boat, which he planned to give to his best friend, Roger, but he never mentioned to Sally anything about
asked by Anonymous 
Math
y=12^x What does this mean and how do you explain it on a graph?
asked by He's not all bad like his reputation </3 
calculus 2
.Find the length of the curve y=e^x+1/4 e^−x between x=0 and x=1.
asked by Anonymous 
college algebra
I need to find out the solution in terms of natural logarithms for this 10^x=2.5
asked by Betty 
PHYSICS
A ball is thrown from a point 1.1 m above the ground. The initial velocity is 20.3 m/s at an angle of 32.0° above the horizontal. (a) Find the maximum height of the ball above the ground??? (b) Calculate the speed of the ball at the highest point in the
asked by Anonymous 
College Math
20s5r  10r5s reduce to simplest form
asked by Fabian 
math
Marla has three secret code cards. The first shows a 37. The second card has the first box blanked out, and the second box is a 2. The two code cards together equal the third card,which is 59. What is the missing number?. This is the word problem for 2nd
asked by Mythreyee 
Physics
Charges of 10.8 nC and 24.2 nC are separated by 0.813 m. What is the potential midway between the two charges?
asked by Ashley 
college algebra
I need to find out the solution in terms of natural logarithms for this 10^x=2.5
asked by Betty 
PHYSICS
A dolphin wants to swim directly back to its home bay, which is 0.85 km due west. It can swim at a speed of 4.35 m/s relative to the water, but a uniform water current flows with speed 2.82 m/s in the southeast direction. (a) What direction should the
asked by Anonymous 
Physics
A parallel plate capacitor has a capacitance of 1.71 nF. There is a charge of 0.809 μC on each plate.
asked by Ashley 
sociology please help asap
i have to write three pages on this topic i need ideas. PLEASE Peter Berger likens sociological discovery to culture shock minus geographical displacement. He also points out that as a sociologist we must peel away the layers of the
asked by gabby 
physics
Describe in detail an experiment to find out the half life of a radioactive material
asked by chloe 
Trignometry
How can I find the exact value of 4cos(7ð/4)2sin(ð/3) without using a calculator (show work)?
asked by Anonymous 
algebra
A wholesaler lists a refrigerator model at a price of $850 and offers a chain discount of 20% and 10%. What is the net price? (Points: 5) $476 $595 $612 $644
asked by T. 
Algerbra 1 substitution method
im really confused about this question: 2x3y=21 y=3x using substitution method. please help
asked by Austin