Thursday

July 30, 2015

July 30, 2015

**Math word problem**

George has 21 coins with a total value of $12.75. He knows he only has quarters and dollar coins in his pocket. How many coins of each type does he have? Create a system to solve.
*Saturday, May 30, 2015 by Anonymous*

**math**

A textbook search committee is considering 20 books for possible adoption. The committee has decided to select 5 of the 20 for future consideration. In how many ways can it do so?
*Saturday, May 30, 2015 by Chris*

**Math**

How do I solve this using the substitution method? x+3y=8 3x-2y=2
*Saturday, May 30, 2015 by Anonymous*

**Math**

If 7 1/4 boxes of parts weigh a total of 68 7/8 pounds, what does one box of parts weigh?
*Saturday, May 30, 2015 by Joshua*

**Math please help!!**

An engineer sees that the angle of elevation to a vertical tower is 45 degrees. When he moves 40 feet closer to the tower on the same straight, level path, he sees that the angle of elevation becomes 55 degrees. How tall is the tower?
*Saturday, May 30, 2015 by math*

**Math ASAP PLZ :)**

if you were to create a histogram of the data in the frequency table, which interval would have the shortest bar? a. 8-9 b.10-11 c.16-17*** d.18-19
*Saturday, May 30, 2015 by Hazel Grace*

**Math, help plz**

if you were to create a histogram of the data in the frequency table, which interval would have the shortest bar? a. 8-9 b.10-11 c.16-17*** d.18-19
*Saturday, May 30, 2015 by Hazel Grace*

**math**

If the offer was changed to "Buy 3, Get 2 Free," at $8.99 each, what would be the new markdown percent? Round to the nearest tenth and do not enter the percent symbol in your answer.
*Saturday, May 30, 2015 by kathy*

**Math please help!!**

A parallelogram has adjacent sides of 78 inches and 90 inches, and the angles between them is 35 degrees. Find the length of each of the diagonals.
*Saturday, May 30, 2015 by sadie*

**math**

Baseball has total 15 games and they win 3/8 game how many game did they win?
*Saturday, May 30, 2015 by Anonymous*

**Math**

A parallelogram has adjacent sides of 78 inches and 90 inches, and the angles between them is 35 degrees. Find the length of each of the diagonals.
*Saturday, May 30, 2015 by sadie*

**math**

An engineer sees that the angle of elevation to a vertical tower is 45 degrees. When he moves 40 feet closer to the tower on the same straight, level path, he sees that the angle of elevation becomes 55 degrees. How tall is the tower?
*Saturday, May 30, 2015 by sadie*

**math**

An Artisan has 63 kg of metal of density 7,000kg/m3. He intends to use make a rectangular pipe with external dimensions 12 cm by 15 cm and internal dimensions 10 cm by 12 cm. Calculate the length of the pipe in meters.
*Saturday, May 30, 2015 by Nasirinho*

**math**

if x = 1-squareroot of 2, find the value of (x-1/x)power of 3
*Saturday, May 30, 2015 by vikash goyal*

**math**

simplify 1/(1+square root of 2) + 1/( square root of 2 + square root of 3) + 1/(square root of 3 + square root of 4)
*Saturday, May 30, 2015 by vikash goyal*

**math**

if x = 1-square root of 2, find the value of (x - 1/x) power of 2
*Saturday, May 30, 2015 by vikash goyal*

**math**

if x= 3+2^2, find the value of (^x - 1/x)^2
*Saturday, May 30, 2015 by vikash goyal*

**math**

What is the solution to the inequality |2n+5|>1? A. –3 > n > –2 B. 2 < n < 3 C. n < –3 or n > –2 D. n < 2 or n > 3 I put A! :) Thank you again.
*Friday, May 29, 2015 by :)*

**math**

Which inequality is equivalent to |x-4|<9? A. –9 > x – 4 < 9 B. –9 < x – 4 < 9 C. x – 4 < –9 or x – 4 < 9 D. x – 4 > –9 or x – 4 < 9 I put B?
*Friday, May 29, 2015 by :)*

**MAth**

What should you say when you meet an angel
*Friday, May 29, 2015 by Hellen*

**Math**

you drive 12,000 miles per year and use 343 gallons of unleaded gasoline. What is your monthly cost of gasoline? my answer: $478.49
*Friday, May 29, 2015 by John Dosley*

**Math**

Joan bought a sweater at a 1/4 off sale. The regular price of the sweater was $37.50. How much did joana pay for the sweater? My Answer: $28.14 is what she had paid for the sweater.
*Friday, May 29, 2015 by John Dosley*

**MATH**

Karl bought a tennis racket at a 1/3 off sale. the regular price of the racket was $45.75. how much did karl pay for the racket? My answer: $30.65 is what Karl paid for the racket, am i right?
*Friday, May 29, 2015 by John Dosley*

**Math**

A thermos holds 1 1/4 quarts of water. How many thermoses can be filled with 5 quarts of water? My Answer: 6 1/4 am i right? i just multiplied 1 1/4 and 5 to get 6 1/4.
*Friday, May 29, 2015 by John Dosley*

**Math**

An airplane takes 5 3/4 hours to reach its destination and 4 1/2 hours to return. If the plane was on the ground for 1 1/4 hours, what was the total time the plane was gone? My answer is 11 1/2 hours, i just added all three numbers am I right?, or was I just supposed to add ...
*Friday, May 29, 2015 by John Dosley*

**Math**

(2y-3)(3y-2) A. 6y2-13y+6 B. 6y2-13y-6 C. 6y2+13y-6 * D. 6y2+13y+6 *my answer (btw the 2 next to 6y is an exponent) I think that it is C, but I want to be sure that it is correct.
*Friday, May 29, 2015 by Haley*

**math**

Samuel is 1/2 as old as his brother. In seven years, he will be 2/3 as old as his brother will be. Find their present ages. Show each step of your work.
*Friday, May 29, 2015 by Hawk Cleary*

**Math**

1. Write the coordinates of point K. A. (6,-1) B. (-1,6) C. (-6, 1) D. (1,-6)
*Friday, May 29, 2015 by DRAGON*

**Math/ASU **

A movie theater sold a total of 520 adult and child tickets on a certain day. The theater sold 2.25 times as many adult tickets as child tickets. Each adult ticket cost $9 and each child ticket cost $2. How much revenue did the theater generate in ticket sales that day?
*Friday, May 29, 2015 by Stephenie H*

**Algebra/Math**

Write an inequality to represent the situation: The temperature stayed above -15*. I've already done this test, but I'm doing corrections. Please help? I'm thinking that the -15* is <=.
*Friday, May 29, 2015 by Mikasa Ackerman*

**math**

Sarah has a piece of rope that is 10 ft long. She wants to cut it into 2 pieces so that the longer piece is 2 ft less than 3 times the shorter piece. How many ft long will the shorter piece be?
*Friday, May 29, 2015 by larassia*

**math**

find the equation of a circle whose diameter has ends points A=(-4, 3)and B=(5, 7)and it subtends a 90 degree at the circumference.
*Friday, May 29, 2015 by cyrus*

**math**

Bruce scored a 12, 18, 16, and 17 on his four quizzes. What must his score on the fifth quiz be if he wants an overall average of 16.
*Thursday, May 28, 2015 by Kimberlyn*

**Algebra**

Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to explain the process. Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply 8*6 which is 48.
*Thursday, May 28, 2015 by Anon*

**math**

Consider the distribution of mathematics SAT scores of students in honors calculus at a liberal arts college. What would you expect the shape and variation of the distribution to be? A. Symmetric with little variation B. Symmetric with large variation C. Skewed right with ...
*Thursday, May 28, 2015 by scoobs2usa*

**Math**

A bag contains tiles with the letters -C-O-M-B-I-N-A-T-I-O-N-S. Lee chooses a tile without looking and doesn't replace it. He chooses a second tile without looking. What is the probability that he will choose the letter O both times? A) 1/132 B) 1/72 C) 1/66 D) 1/23 Is the...
*Thursday, May 28, 2015 by STUdent*

**math**

A bird is flying southward at a rate of 480 mph. There is an east wind blowing at 60 mph. What is the new speed and direction of flight of the bird?
*Thursday, May 28, 2015 by jim*

**Math**

For each quadratic function, find the axis of symmetry of its graph. y=3x^2-6x+4
*Thursday, May 28, 2015 by Makaila*

**Math**

I have a practice math test and I am stuck on a few. Please help :-) 1) Write the number of permutations in factored form. Then simplify. How many different ways can you and four of your friends sit in the back of a limousine? A) 4!; 24 B) 4!; 120 C) 5!; 120 D) 5!; 720 2) ...
*Thursday, May 28, 2015 by Kylie*

**Algebra**

Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to include what properties (associative, distributive etc.) I used to simplify the problems.
*Thursday, May 28, 2015 by Anon*

**Math **

If each box costs the same amount to ship, which would be more cost effective? Hint: Which has a greater volume? They are rectanglur prisims Box 1: 4ft 3ft 2ft Box 2: 2.5 ft 5ft 2ft
*Thursday, May 28, 2015 by Lilly*

**Math**

Q. Coles sleeping bag has four sides. The side with the zipper is parallel to the opposite side. None of the angles where the sides meet are right angles. The side opposite the zipper is shorter than the side with the zipper. The other two sides are the same length. What shape...
*Thursday, May 28, 2015 by Abbey*

**Math **

Q. Tim and Jorge hope they will be assigned to the same cabin at the summer camp. Each cabin has 8 beds in it. And Tim knows that he is saying in the green cabin not the red cabin. If there are 14 boys going to camp in addition to Tim and Jorge. What is the change that Tim and...
*Thursday, May 28, 2015 by Abbey*

**math**

3x2+5x-5x2-4x+5-2
*Thursday, May 28, 2015 by ciara *

**Math **

Hi I'm trying to do my graph and the numbers go from 50 100 150 200 250 300 there is a point missing between 200 and 250. How do I find the number between 200 and 250?
*Thursday, May 28, 2015 by Lilly*

**Math**

Q. Tim and Jorge hope they will be assigned to the same cabin at the summer camp. Each cabin has 8 beds in it. And Tim knows that he is saying in the green cabin not the red cabin. If there are 14 boys going to camp in addition to Tim and Jorge. What is the change that Tim and...
*Thursday, May 28, 2015 by Michelle*

**Math**

tracy invested $6000 for one year, part at 10% annual and the balance at 13% annual interest. her total interest for the year was $712.5. how much money did she invested at each rate? I tried using a table for this I just don't know how to set the problem up.
*Thursday, May 28, 2015 by Makasta*

**MATH**

0.4771=x/2.303*8.14[50/323*373 calc.-x?
*Thursday, May 28, 2015 by tanya*

**Math**

The area of a rectangle is 42m2.If its length is 5m, what is its breadth?
*Thursday, May 28, 2015 by Shandy*

**Math**

The area of a rectangle is 900m2.If its breadth is 45m,what is its length?
*Thursday, May 28, 2015 by Oratile*

**algebra..Matrix...math**

Hi, Please help me to this question would prove less than 10 hours Athens has a population of n ,m club with any club membership is an even number and the number of members of both clubs to prove and show m<n
*Thursday, May 28, 2015 by ali*

**math**

A truck has a cylindrical tank 9 m long for transporting milk. The diameter of the tank is 2.8 m. How much milk can it hold? (Use 3.14 for π.)
*Thursday, May 28, 2015 by King*

**Math**

The parking lot has 5/6 as many vans as trucks. What equation can be use to show the number of vans?
*Thursday, May 28, 2015 by Al*

**Math**

Ralph has a bag of 28 marbles. Each marble weighs 3.099 grams. About how many grams does the bag weigh?
*Wednesday, May 27, 2015 by Vernon*

**math**

A first-class letter can weigh up to 13 ounces before additional charges must be added. Estimate how much more weight can be added to a letter that weighs 10 1/3 ounces.
*Wednesday, May 27, 2015 by Grace*

**5th grade math**

51 is 4 times the number of books, less 13
*Wednesday, May 27, 2015 by Mythreyee*

**5th grade math**

51 is 4 times of book is less 13
*Wednesday, May 27, 2015 by Mythreyee*

**Math**

An airplane is heading north at an airspeed of 300km/ hr, but there is a wind blowing from the northwest at 50km/hr. How many degrees off course will the plane end up flying, and what is the plane's speed relative to the ground?
*Wednesday, May 27, 2015 by Dan*

**Math**

10-2/3p=42 I think the answer is p=63
*Wednesday, May 27, 2015 by Christine*

**5th grade math**

The sum of 6 and the product of 7 and a number is 75
*Wednesday, May 27, 2015 by Mythreyee*

**Math I need help ASAP!**

1. which of the following is true of a random sample? a. it is the only way to sample a population. b. each member of the sample is a volunteer. c. it is always the easiest way to sample a population. d. each member of the population has an equal chance of being selected. 2. ...
*Wednesday, May 27, 2015 by Carolina*

**1st grade math **

Draw a quick picture for 26+8. Show how to make a ten to model the number of apples a different way. Write a new number sentence I did 26 + 8 apples .. I drew 8 apples = 34 then I put 7+ 3 = 10 ?
*Wednesday, May 27, 2015 by Sarah *

**1 st grade math **

draw a new quick picture for pablo's apples. show how to make a ten to model the number of apples a different way. write a new number sentence. 4 + 6 = 10 ?
*Wednesday, May 27, 2015 by Sarah *

**math**

Half of Sarah's wire is equal to 2/5 of Daniels. Chris has 3 times as much as Sarah. In all, their wire measures 6 ft. How long is Sarah's wire in feet?
*Wednesday, May 27, 2015 by mary*

**Math**

trigonometric identities tan^2Ө/sin^2Ө-1=tan^2Ө
*Wednesday, May 27, 2015 by Melissa*

**Math**

The volume of a cone that fits exactly inside a cylinder is 20 cubic feet. What is the volume of the cylinder? (5 points) Select one: a. 4 cubic feet b. 5 cubic feet c. 40 cubic feet d. 60 cubic feet IDK WHAT TO DO!!!
*Wednesday, May 27, 2015 by Skye*

**Math**

Write an equation for the parabola with focus (0, 0) and directrix y = 1. I got -x^2 - 2y + 1, but how do I get it in the form y - k = 1/4p(x - h)^2?
*Wednesday, May 27, 2015 by Anonymous*

**math**

When a pendulum swings 35degree from the vertically, the weight moves 15cm horizontally and 5.3 vertically. The length of the pendulum?
*Wednesday, May 27, 2015 by anonymous*

**math**

Product A This product will take 2 years to develop, at a cost of $100,000 in the first year (Yr 0) and $50,000 in the second. Revenue (benefits) in subsequent years is expected to be $100,000 per year. Product B This product will only take a year (Yr 0) to develop, at a cost ...
*Wednesday, May 27, 2015 by gagan*

**Math**

Class of 20 students, 13 play soccer, 8 play tennis and 2 play neither. Find how many students a) Play soccer or tennis b) Play both soccer and tennis c) Play only soccer
*Wednesday, May 27, 2015 by Annie *

**Math**

Write an equation in standard form for each parabola. Vertex (0, 0) and directrix y = 6. y = -1/24x^2?
*Wednesday, May 27, 2015 by Anonymous*

**math**

Alexander found the means-to-MAD ratio of two data sets to be 3.4. What can he conclude about the distributions? A. They are similar. B. They are somewhat similar. C. They are different. D. They are identical
*Wednesday, May 27, 2015 by Jakeh*

**Math**

Jaime mixes purple paint. She uses six pints of blue paint for every five pints of red paint. Jaime wants to mix more paint exactly the same color. She has 21 pints of blue paint. How much red paint does she need?
*Wednesday, May 27, 2015 by Lemos*

**Math**

A dealer bought 5 quintals of rice for Rs.19 per kg paid Rs.500 on transportation.if he had sold the rice at the rate of Rs.20.50 per kg,find his profit?
*Wednesday, May 27, 2015 by Sagar*

**English**

Talk with your partner about what you don't have to do during the vacation. What don't you have to do on vacation? 1. I don't have to go to school. 2. I don't have to take the bus. 3. I don't have to take bus number 5 to go to school. 4. I don't have to...
*Wednesday, May 27, 2015 by rfvv*

**dentistry question **

is it possible to become a dental surgeon with just average grades, and no math in senior year?
*Wednesday, May 27, 2015 by denisha*

**college major **

can you major in operations research and be ok in math. (not great)?
*Wednesday, May 27, 2015 by Anonymous*

**college major **

can you major in operations research and be ok in math. (not great)?
*Wednesday, May 27, 2015 by Anonymous*

**Math**

What is the best way to use mental math to multiply (5x18)x20?
*Wednesday, May 27, 2015 by Vernon*

**Math**

I need help with one of the algebra with pizzazz worksheets. Its DD-39 AKA "Why did the banana go out with the prune?" I got the answers but not the work. Please help.
*Wednesday, May 27, 2015 by Bayley*

**Math**

The graphs of 5x-3y=35, 7x-3y=43, and 4x-ay=61 all intersect at the same point. Find the value of "a". Do I solve the systems and then plug in? I am not sure haha.
*Wednesday, May 27, 2015 by Bella*

** Math**

Jesse and Leah can install a new gutter system on a house in 4 hours when they work together. Working alone, it would take Leah twice as long to install a new gutter system as it would take Jesse working by himself. Leah caught a really bad cold and called in sick this morning...
*Tuesday, May 26, 2015 by josh*

**Math**

Mr. Lee invested some money. Lost 4% in a stock and gained 3.2% in a bond. Overall he lost 11.2$. If he invested the amount in the stock to the bond vice versa, then he wouldve gained $3.2, how much is in the bond and how much is in the stock? I got: 0.96x+1.032y=x+y-11.2 0....
*Tuesday, May 26, 2015 by Beth*

**math**

There are 120 tickets being sold for a raffle contest. There is one winning ticket. Lana buys 10 tickets. What are the probability she will win the prize
*Tuesday, May 26, 2015 by robyn*

**Math**

Mr. Lee took the $1200 he collected fr chinese new yea and invested some in a 6% bond, and the rest at a 4.5% T-bill. The return for the T-bill exceeded thay from the bond by $12. How much was invested at each rate?
*Tuesday, May 26, 2015 by Beth*

**Math help**

Mr. Lee took the $1200 he collected fr chinese new yea and invested some in a 6% bond, and the rest at a 4.5% T-bill. The return for the T-bill exceeded thay from the bond by $12. How much was invested at each rate? Thanks!
*Tuesday, May 26, 2015 by Beth*

**Math**

(6*10^7)*(3*10^-8)^2/8.2*10^-20.simplify in scientific notation.
*Tuesday, May 26, 2015 by Sagar*

**Math**

Mr. Lee invested some money. Lost 4% in a stock and gained 3.2% in a bond. Overall he lost 11.2$. If he invested the amount in the stock to the bond vice versa, then he wouldve gained $3.2, how much is in the bond and how much is in the stock? I am so confused, and out of ...
*Tuesday, May 26, 2015 by Wendy*

**Math **

A spy plane, whose average speed in still air is 250 mph, departs with a 40 mph tailwind and returns to the same airport flying into the same wind. How far from the airport can the plane fly if it has enough fuel to fly for 5 hours?
*Tuesday, May 26, 2015 by josh*

**Math Ms Sue ???**

The image of an eraser in a magnifying glass is three times the eraser’s actual size and has a width of 14.4 cm. What is the actual width of the eraser in cm? a) 14.4 cm. b) 3 cm. c) 43.2 cm. d) 4.8 cm. is it C? A square has 16-cm sides. What is the perimeter of the image...
*Tuesday, May 26, 2015 by Gaby *

**Math**

The length of the hypotenuse of a 30-60-90 triangle is 9. What is the perimeter?
*Tuesday, May 26, 2015 by rhidicde*

**Math**

What is the missing value to the nearest hundredth? tan__=12 A. 85.24 B. 87.61 C. .12 D. .98
*Tuesday, May 26, 2015 by rhidicde*

**math**

How would i do a table of values for this equation: y=1/2(3)^-2x starting from -5 to 5 i get these values: -0.2778, -0.2222, -0.1667, -0.1111, -0.0556, 0 etc... am i wrong?
*Tuesday, May 26, 2015 by rose*

**Math **

The image of an eraser in a magnifying glass is three times the eraser’s actual size and has a width of 14.4 cm. What is the actual width of the eraser in cm? a) 14.4 cm. b) 3 cm. c) 43.2 cm. d) 4.8 cm. is it C? A square has 16-cm sides. What is the perimeter of the image...
*Tuesday, May 26, 2015 by Gaby *

**math **

Mike has a tree 58ft long and wants to cut it into 24 equal pieces. How long would the pieces be?
*Tuesday, May 26, 2015 by Ashley *

**math**

How would i do a table of values for this equation: y=1/2(3)^-2x starting from -5 to 5 i get these values: -0.2778, -0.2222, -0.1667, -0.1111, -0.0556, 0 etc... ami wrong?
*Tuesday, May 26, 2015 by rose*

**Math- Geometry**

Kristen lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Kristen’s home and the football field at the exact point where an altitude to the right triangle formed by her home, the park, and the ...
*Tuesday, May 26, 2015 by rhidicde*

**Math**

Three friends are planning to visit each other. To optimize travel time, they want the meeting place to be equidistant from the three different cities they live in. The cities are located at A(-16, -1), B(1, 6), and C(1, -18). What are the coordinates where the meeting should ...
*Tuesday, May 26, 2015 by Anonymous*

**math**

How would i do a table of values for this equation: y=1/2(3)^-2x starting from -5 to 5 i get these values: -0.2778, -0.2222, -0.1667, -0.1111, -0.0556, 0 etc... ami wrong?
*Tuesday, May 26, 2015 by rose*

**Math**

What is the surface area and volume of a composite figure made up of a hemisphere and a cone in terms of pi? The radius is 10, and the slant height is 15. Are my answers right? Cone surface area: π(10)(15) = 150π Hemisphere surface area: 2π(10)^2 = 200π 350...
*Tuesday, May 26, 2015 by Anonymous*