Friday

May 6, 2016
**Math: Trigonometry**

For how many values of n with 0<=n<=100 is the graph of f(x) = sin(x + n) identical to the graph of g(x) = cos(x)? I think that I should use the relationship that cos(x)=sin(90-x) but I'm not sure how.
*Friday, April 8, 2016 by Katie*

**Math**

I need help with this problem. It says What is the reciprocal of 0.06? Would I change 0.06 to a fraction which is 6/100 and flip it over?
*Friday, April 8, 2016 by Jan*

**Math**

Let f(x) = (3x - 7)/(x + 1. Find the inverse f^-1(x). Once again, thank you so much for helping me!
*Friday, April 8, 2016 by Annonymous*

**Math**

Suppose a(x) = 3x - 7 and b(x) = 2 - x^3. Find a(b(3)) - b(a(3)). Thank you for helping me!
*Friday, April 8, 2016 by Annonymous*

**MATH**

At the age of 50 Sally invested $60,000 at 7% interest compounded semiannually. How much will she have at age 50 (60,000*(1+(0.07/2))^2-1)
*Friday, April 8, 2016 by Petra *

**Math **

A child invest $20,000 n a bond that pays 8% interest rate compounded semi-annually. How much money will there be in 18 yrs. (20000*(1+(0.082))^(2*18)=82078.65 Is this correct
*Friday, April 8, 2016 by PATRIS*

**math**

x<0 or x>0 what's another way of expressing it in perfect square terms?
*Friday, April 8, 2016 by bob*

**math**

The U-Drive Rent-A-Truck company plans to spend $8 million on 280 vehicles. Each commercial van will cost $25,000, each small truck $30,000, and each large truck $40,000. Past experience shows that they need twice as many vans as small trucks. How many of each type of vehicle ...
*Friday, April 8, 2016 by susan*

**Math**

calculate the rate percentage per year if $3240 is paid as intrest on 12000 for 2 and a half years. whats percentage pre year?
*Friday, April 8, 2016 by Amanda*

**Math**

Ms. Vellake loves to read. She read 522 hours in 29 weeks. If she read an equal number of hours each week, how many hours did she read each week?
*Friday, April 8, 2016 by Math*

**math**

How many cubic feet are there in a room 20' long × 12' wide, with a ceiling 8' high
*Friday, April 8, 2016 by jeremy*

**math**

By what percent will a fraction change if its numerator is decreased by 10% and its denominator is decreased by 50%?
*Friday, April 8, 2016 by Anonymous*

**math**

The average test score of RSM students in September increased by 20%. In October it increased by another 15%. By what percent did the average score on the test increase during the two months?
*Friday, April 8, 2016 by Anonymous*

**math**

A pair of jeans was on sale −15% off the price, but when Bill came to buy them a month later the sale was over and he had to pay the regular price of $170. How much money did Bill lose?
*Friday, April 8, 2016 by Anonymous*

**math**

A tourist starts to walk up a mountain path that is 31 miles long at the rate of 4 miles per hour. After walking for a while, he gets tired and decides to get a taxi. The taxi gets him to the top travelling at a constant speed of 50 mph. If the tourist reaches the destination ...
*Friday, April 8, 2016 by Anonymous*

**Math **

Sally is filling glass containers in the shape of cylinders with different colors of sand. Each cylinder has a radius of 4 inches and a height of 8inches. Sally has 1,000 cubic inches of sand. How many containers can she fill completely.? plz I really need help on this question.
*Friday, April 8, 2016 by I REALLY NEED HELP*

**Math**

Hi again, has anyone taken the Lesson 20: East and Southeast Asia Unit Test cause im freaking out cause its so hard. Anyone, plz help me.
*Friday, April 8, 2016 by Just a boy who needs help*

**Math**

A 1963 Chevy Bel Air a classic car today, cost $2400 new in mid 1963. How much would that be in 2012 dollars?
*Friday, April 8, 2016 by Kevin*

**Math**

Hi, has anyone taken the Lesson 5: Drawing Triangles Quiz. If so would anyone be as so kind to give me the answers or help me out a little? Thxs
*Friday, April 8, 2016 by Just a boy who needs help*

**Math **

Sally is filling glass containers in the shape of cylinders with different colors of sand. Each cylinder has a radius of 4 inches and a height of 8inches. Sally has 1,000 cubic inches of sand. How many containers can she fill completely.? plz I really need help on this question.
*Friday, April 8, 2016 by sam*

**Math **

An ice cream cone is 5 inches high and has an opening 3 inches in diameter. It is filled with ice cream and then given a spherical top. How much ice cream is there? The top part is 1/2 of a sphere.
*Friday, April 8, 2016 by Ashley *

**Math**

The cost for a business to make greeting cards can be divided into one-time costs (e.g. a printing machine) and repeated costs (e.g. ink and paper). Suppose the total cost make 500 cards is $1,100, and the total cost to make 650 cards is 1,400. What is the total cost to make 1...
*Friday, April 8, 2016 by Dylan*

**math**

calculate the rate percentage per year if $3240 is paid as intrest on 12000 for 2 and a half years
*Friday, April 8, 2016 by Amanda*

**Math 10- Relations & Functions**

1) write the following with two variables: F (x) = 4x - 8 2) Write the following function in notation: C= 14n + 5 3) Fow the following function, F (x) = 8x + 12: a) F (x) = 132 b) F (6)
*Friday, April 8, 2016 by Bratt*

**Math**

A ladder is leaning up against a wall. The ladder touched the wall 5ft up. The ladder is 6ft Long. A) Draw a picture and label all of the values B) What is the angle that is made between the ladder and the ground? C) How far away from the wall is the ladder where it touches ...
*Friday, April 8, 2016 by Britt*

**math**

find the arc length of AB to the nearest tenth. AB equals 45 degrees. radius is 5 in.
*Friday, April 8, 2016 by Abigail*

**Math w/business apps**

How much should be invested at 6% compounded monthly so that the investment will be worth $20,000 in six years?
*Friday, April 8, 2016 by Lori *

**math**

I never really do this but...can someone help me with these? 6. (4x^2 - 2x - 1) - (-3x^3 + 2) A. -3x^3 + 4x^2 - 2x + 1 B. -3x^3 + 4x^2 - 2x - 3 C. 3x^3 + 4x^2 - 2x + 1 D. 3x^3 + 4x^2 - 2x - 3 ___ 8. f^2 * f^4 A. (2f)^8 B. (2f)^6 C. f^8 D. f^6 ___ 9. 11^12 / 11^8 (fraction) A. ...
*Friday, April 8, 2016 by aca math test help*

**Math Help!!!**

15. A survey about the student government program at a school finds the following results: 110 students like the program. 120 students think the program is unnecessary. 210 students plan on running for student government next year. If a circle graph were made from this data, ...
*Friday, April 8, 2016 by Nausicca*

**math {sequences}please help**

Sequences 1. 14, 19, 24, 29,… a. Geometric, 34,39,44 b. Arithmetic,32,36,41 c. Arithmetic, 34, 39, 44 ** d. The sequence is neither 2. -4, 8, -16, 32, . . . . a. Arithmetic , 64, 128, 256 b. Geometric, -64 , 128, -256 ** c. Geometric, -48, 64, -80 d. Neither 3. 81, 27, 9...
*Friday, April 8, 2016 by UNKNOWN*

**Consumer math Help please**

You (or your parents) purchase a new car for $16,725.00 plus 6.15% sales tax. The down payment is $1,400.00 and you (or your parents) have an average credit rating. How much interest is accrued after the first month? Average Credit score APR (%)- Secured =5.85% Unsecured= 6.20%
*Friday, April 8, 2016 by Brianna*

**math**

if i deposit inr 1000 monthly for 35 years what will be the amount after 35 years ?
*Friday, April 8, 2016 by gerald*

**math**

One of the two digits of a two digit number is three times the other digit. If you interchange the digits of this two- digit number and add the resulting number to the original number, you get 88. What is the original number?
*Friday, April 8, 2016 by sunil*

**math**

what is the product of -24 and -20
*Friday, April 8, 2016 by little dark one*

**Math**

9x+5y=9 12x+8y=12.8
*Friday, April 8, 2016 by cassie*

**Math**

What is 500 percent of 25?
*Thursday, April 7, 2016 by Nina*

**Math**

How many more yellow and red lollipops than blue and green lollipops were pulled out of the bag?
*Thursday, April 7, 2016 by Priscilla*

**math**

Write4.1x10 to the 5th power in standard form
*Thursday, April 7, 2016 by bobby*

**Math**

Vinay made a Password that consists of 3 digits. None of the digits are the same. How many possible passwords did Vinay choose from?
*Thursday, April 7, 2016 by Sherin*

**Math**

Kate won a bag of candy at a raffle. She gave 1/5 of the candy to her brother, 1/4 of the candy to her friend, and had 11 pieces left over. How many pieces did she give her Brother?
*Thursday, April 7, 2016 by Kate*

**Math**

Jessica was responsible for making party bags for her sister's birthday party. She noticed that there were 6 times as many balloons as stickers and 1/3 as many bubbles as balloons. If there were 135 party items, how many are stickers?
*Thursday, April 7, 2016 by Anonymous*

**Math**

A true-false test consists of 10 items. What is the probability that Chris gets 80% or more for the test?
*Thursday, April 7, 2016 by Denzil*

**Math**

Let ABCD be a square, and EFGH be a square whose area is twice that of ABCD. Prove that the ratio of AB to AC is equal to the ratio of AB to EF
*Thursday, April 7, 2016 by Kenny*

**Math**

A computer was purchased at a sale at a discount of 15%. If $688.50 was paid for it, and this price includes 8% sales tax, then what was the original price without tax or discount?
*Thursday, April 7, 2016 by Matt*

**Math**

The vertices of ΔABC are A(2, –5), B(–3, 5), and C(3, –3). The triangle is reflected over the x-axis. Use arrow notation to describe the original triangle and its reflection. a. A(2, –5), B(–3, 5), C(3, –3) --> (2, –5), (–3, 5...
*Thursday, April 7, 2016 by Queen*

**Math**

How much greater is the surface area of the rectangular prism than the surface area of the cube.
*Thursday, April 7, 2016 by Latoya*

**pre ap math **

a toy rocket is launched from a platform that is 48 feet high. the rockets height above the ground is modeled by h=-16t^2+32t+43. find the maximum height of the rocket find the time it will take for the rocket to reach the ground.
*Thursday, April 7, 2016 by kenia *

**pre ap math **

a toy rocket is launched from a platform that is 48 feet high. the rockets height above the ground is modeled by h=-16t^2+32t+43.
*Thursday, April 7, 2016 by kenia *

**math**

shirley is making 4 dozen cookies for a bake sale .she does not want to spend more than $9 making the cookies. write and solve an inequality to find the maximum cost per dozen cookies.let c represents the maximum cost per dozen cookies.
*Thursday, April 7, 2016 by lakshmi*

**Math**

Quadrilateral MNPQ is the same shape but different size than quadrilateral now.tell one figure is dilation of other or not.explain your reasoning.
*Thursday, April 7, 2016 by Khan*

**math probability**

Two friends were each rolling a die. After they rolled, they found the sum of the numbers showing on each die. What is the probability that the sum is 7? I added the sides together and simplified to get 1/6, but I don't think that's right.
*Thursday, April 7, 2016 by Anna*

**Math**

Who were John Venns peers or any mathematicians working on the same thing as John during the same time as him?
*Thursday, April 7, 2016 by Elizabeth*

**math/graphing**

Graph the direct variation y=−1.5x. Using the graph, find:The value of y corresponding to the value of x equal to 1; 0; 2; 3
*Thursday, April 7, 2016 by Anonymous*

**math**

a company is designing a juice box. the box is in the shape of a rectangular prism. the base of the box is 8 1/2 inches by 4 1/2 inches, and the box is 4 inches high. if the juice fills 80% of the boxes volume, find the volume of juice in the box.
*Thursday, April 7, 2016 by onel22*

**Math**

Baichung's dather is 26 years younger than Baichung's grandfather and 29 years older than Baichung.The sum of the ages of all the three is 135 years.What is the age of each one of them?
*Thursday, April 7, 2016 by Sunil*

**Math**

Factorise Completely 9y^2-81
*Thursday, April 7, 2016 by Ackron*

**Math**

is 2/3 larger than 4/7
*Thursday, April 7, 2016 by Morgan*

**Math**

Sophia bought 3 yards of trim to put around a 'rectangular scarf. She wants the width of the scarf to be a whole number that is at least 6 inches and at most 12 inches. If she uses all the trim, what are the possible dimensions of her scarf?
*Thursday, April 7, 2016 by Kaia walker *

**math **

fred has saved 4300 cent over 2 days from selling lemonade. how many dollars dose fred have ?
*Thursday, April 7, 2016 by amari *

**Math**

6.2, 6 1/2 , 6 3/5, 6.7, 6 1/3
*Thursday, April 7, 2016 by Anonymous*

**Math**

Find the missing number that completes the table of values what's the Function Objective a function table Example:y= X+2
*Thursday, April 7, 2016 by Alyssa *

**Math**

A picture frame is 6 1/2 inches wide. The ratio of the length of the frame to the width is 3:2. What is the length of the frame in inches?
*Thursday, April 7, 2016 by Lee*

**Math**

Roulette wheels in Nevada have 38 pockets. They are all numbered 0, 00, and 1 through 36. Of all 38 pockets, there are 18 red, 18 are black, and 2 are green. Each time the wheel is spun, a ball lands in one of the pockets, and each pocket is equally likely. If you spin the ...
*Thursday, April 7, 2016 by Jennifer *

**math**

A trapezoid with an area of 48m2 has a height of 6m. One of its bases is 12m. Write and solve an equation to find the length of its other base. Also explain the work so I can understand when I do the test. Thanks
*Thursday, April 7, 2016 by Adri*

**math**

3y+x=10 x=2y-1 3y+x-×=10-x
*Thursday, April 7, 2016 by nancy*

**Math-soh cah toa**

A bridge is 140m long.From the ends of the bridge, the angles of depression of a point on the river under the bridge is 41° and 48°. How high is the bridge above the river to the nearest meter. ( I know the answer is 68m, I just need to know how to get that, please ...
*Thursday, April 7, 2016 by Kennedy*

**Math**

Suppose a(x) = 3x - 7 and b(x) = 2 - x^3. Find a(b(3)) - b(a(3)).
*Thursday, April 7, 2016 by Justine Keeps*

**Math**

Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b? Thank you for helping!
*Thursday, April 7, 2016 by Lance*

**Math**

If f(x)=5x-12, find a value for x so that f^-1(x)=f(x+1). Thank you so much
*Thursday, April 7, 2016 by Lance*

**Math**

Define a#b=ab-a-b+1 for all real numbers a and b. x # 7 = 42. What is the value of x?
*Thursday, April 7, 2016 by Cooper*

**Math**

The equation x^2+12x=73 has two solutions. The positive solution has the form (sqrta)-(b) for positive natural numbers a and b. What is a+b? Thanks
*Thursday, April 7, 2016 by Linda *

**Math**

For what values of x is it true that x^2 - 5x - 4 < 10? Express your answer in interval notation. Thank you!
*Thursday, April 7, 2016 by Candice*

**Math**

Triangle WXZ is a right triangle. Triangle XYZ is a right triangle. Angle WXY is 86 degrees. What is angle YXZ's measure?
*Thursday, April 7, 2016 by Anonymous*

**Math**

Find the surface area of the prism 5m 9m 12m 1.426m 2.306m<< 3.336m 4.213m Is this correct??
*Thursday, April 7, 2016 by Someone*

**math**

The coordinates of an ordered pair have opposite signs. In which quadrant(s) must the ordered pair lie? Explain? PLZZ HELP ME I NEED TO ACE THIS TEST OR ELSE I FAIL
*Thursday, April 7, 2016 by really*

**math**

Can the figure below tessellate a plane? Explain your answer. 20.gif
*Thursday, April 7, 2016 by really*

**math**

find three solutions of the equation y= -2x - 6 (-2,-10),(1,4),(2,-1) I think this one (-2,-10),(1,-4),(0,6) (0,-6),(3,-2),(-2,-10) (1,-4),(0,-6),(-1,-9)
*Thursday, April 7, 2016 by really*

**math**

the shorter leg of a right triangle is 9 inches shorter than the longer leg. the hypotenuse is 9 inches longer than the longer leg. find the side lengths of the triangle
*Thursday, April 7, 2016 by Tammie*

**math**

find three solutions of the equation y= -2x - 6 (-2,-10),(1,4),(2,-1) (-2,-10),(1,-4),(0,6) (0,-6),(3,-2),(-2,-10) I think this one? (1,-4),(0,-6),(-1,-9)
*Thursday, April 7, 2016 by really*

**math**

solve for x if 1/15(6+x)=1/6(x+3)
*Thursday, April 7, 2016 by Nita*

**math**

Which ordered pair is not a solution of y = 4x -9 (-9, 27) (3, -21) (-6, 15)I think this one? (5, -28)
*Thursday, April 7, 2016 by really*

**math**

Scale on a map is 1:1000 What does 1cmsquared on a map represent
*Thursday, April 7, 2016 by tally*

**Math**

How many 4 digit multiples of 5 can be form d using the digits, 1,2,5,7,9,0 if repitions are not allowed?
*Thursday, April 7, 2016 by Bobbie*

**math**

if the numbers 16 64 400 and 784 are they a variable or a constant???
*Thursday, April 7, 2016 by jazmin*

**math **

write the equation Eighteen less than 6 times a number is the same as 12 more than the number.
*Thursday, April 7, 2016 by Anonymous*

**math **

A girl is × years old and her cousins age is ×- 5 years. How old is her cousin if she is 7years old?
*Thursday, April 7, 2016 by Tebogo *

**Math **

In a class of 32 students, 17 study Music and 20 study Art. What is the LEAST number of students who are studying BOTH Music and Art?
*Thursday, April 7, 2016 by Mishana*

**Math**

Mr Wee bought t-shirts at $5 each and sold them at $9each. Those who bought 2 t-shirts from him were given one t-shirt free. At the end of the sale, Mr Wee made a total of $1288 and 120 t-shirts were given free. How many customers bought only 1 t-shirt?
*Thursday, April 7, 2016 by Izzah*

**math**

A manufacturing company manufactures a cardboard box with a square base and a height of 15 inches. Suppose the equation 2 x x 60 7,200 0 can be used to find the length and width of the base of the box, each measuring x inches. Use the zero product property to solve the ...
*Thursday, April 7, 2016 by crissy*

**Statistics Math**

There are 3 men sitting in a row facing the same way. Their names are A,B, AND, C. a hat has been placed on their heads without them seeing their own or anyone else's. A can see B and C, B can see only C, C sees none. The game goes as follows: (it can have 1,2,3 quest.) A ...
*Thursday, April 7, 2016 by lola*

**Math **

Last week Jorge ran 25 2/3 miles. This week he ran 5/6 of this amount. Did he run more this week or last week?
*Thursday, April 7, 2016 by Evie*

**Math**

How many ways are there to put 6 balls in 3 boxes if the balls are distinguishable but the boxes are not?
*Thursday, April 7, 2016 by Help plz*

**Math**

Julia made a 1/8 scale drawing of her dollhouse. Her dollhouse is 38 inches tall. Will her drawing be more or less than 38 inches tall?
*Thursday, April 7, 2016 by Evie*

**Math**

Today Enrique read 4/3 of the pages he read yesterday. Did he read more or less pages than he read yesterday?
*Thursday, April 7, 2016 by Evie*

**math**

The rails on a railroad are 30 feet long. As the train passes over the point where the rails are joined, there is an audible click. The speed of the train in miles per hour is approximately the number of clicks heard in: A. 20 seconds B. 2 minutes C. 1.5 minutes D. 5 minutes E...
*Thursday, April 7, 2016 by Gaurav*

**Math**

Trina is planning on spending 2/5 as much time this week as last week practicing the piano. Is this more or less time than she spent last week?
*Thursday, April 7, 2016 by Evie*

**Math**

A portrait has an area of 180 square inches. If the length of the portrait is 1 1/4 times the width, what are the dimensions of the picture?
*Thursday, April 7, 2016 by Evie*

**Math**

A mural on the school wall has an area of 4800 square inches. If the length of the mural is 1 1/13 times the width, what are the dimensions of the mural?
*Thursday, April 7, 2016 by Evie*

**math**

Solve the volume of a cylinder with diameter (4 +2x)m, height (5x+1)m v=pi [(4+2x) x (5x+1)]
*Wednesday, April 6, 2016 by Ellen*

**Math**

The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For these questions, assume these values are not changing from year to year, and that the population of the United States is 312 million people. Cause Deaths Passenger car occupant 13,...
*Wednesday, April 6, 2016 by Anonymous*