Friday

April 29, 2016
**Math**

A railway engine starts shunting wagons by first going 1000 m North of railway station. It reverses and travels 1250 m South and then it again moves 600 m north. Finally moving 800 m South it comes to rest. How far is the engine from the station and in which direction?
*Saturday, April 9, 2016 by Kuntal Roy*

**Math**

I have 3 nickels, 1 quarter, and 1 penny in my pocket. If I pick out a coin from my pocket, do not replace it, then pick out a second coin from my pocket, what is the probability that the second coin that I pick out of my pocket is a nickel? So far I have come up with this: P(...
*Saturday, April 9, 2016 by John*

**Math**

Shelley drives her car for p days over a 30-day period. Her sister Helen used it for 1/6 of the remaining days. (a) For how long does Helen use the car? (b) For how long do Shelley and Helen use the car over a 30-day period?
*Saturday, April 9, 2016 by Jackii *

**Math **

Carissa predicted she answered 19 questions correctly out of 20 on a test .She actually got 17 answers correct .By what percent was Carissa's prediction off ?
*Saturday, April 9, 2016 by Shernett *

**Math**

Two lamps are to be chosen from pack of 12 lamps where four are defective and the rest are non defective. what is the probablity that a.both are defective? b.one is defective? c.at most one is defective?
*Saturday, April 9, 2016 by Estifanos*

**Math**

A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length and the actual theater. He says that he can also use this information and any length in the ...
*Saturday, April 9, 2016 by Shaun*

**math**

One car went 10 miles farther when traveling at 50 mph than a second car that traveled 2 hours longer at a speed of 40 mph. How long did the first car travel?
*Saturday, April 9, 2016 by Anonymous*

**Math**

Ryan bought 2 1/4 pounds of almonds and divided them into bags with 1/8 pound in each bag.
*Saturday, April 9, 2016 by Lina*

**Math**

When did you first start a saving plan? What is the purpose of the saving plan? How will having a saving plan benefit someone?
*Saturday, April 9, 2016 by Sara*

**Math**

For this problem (2)^0 (-2)^0 would I add the exponents? I f so what do I do with 2 and -2?
*Saturday, April 9, 2016 by Jack*

**Math**

For this problem (2)^0 (-2)^0 do I add the exponents? If so then what Would I do with 2 and negative 2
*Saturday, April 9, 2016 by Jay*

**Math**

2e^3x=16 Solve for x. So far I changed this to 2ln3x=16 then ln3x=8 then...
*Saturday, April 9, 2016 by Student*

**Math: Parametric Equations**

Let G be the graph of the parametric equations x = cos(4t), y = sin(6t). What is the length of the smallest interval P such that the graph of these equations for all t E P produces the entire graph G? (The "E" represents the symbol for "is in" that looks ...
*Saturday, April 9, 2016 by Katie*

**MAth**

Jasmine invested $73,000 in a fixed rate account offering 7.2% interest rate compounded semiannually. How long will it take her to grow it to $100,000?
*Saturday, April 9, 2016 by Petra*

**Math**

A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length in the actual theater. He says that he can also use this information and any length in the actual...
*Saturday, April 9, 2016 by Jason*

**Math, science**

in 2009 an earthquake of magnitude 6.7 shook the kermadec islands off the coast of new zealand. also in 2009 an earthquake of magnitude 5.1 occured in the alaska peninsula. How many times stronger was the kermadec earthquake. Use formula log (I1/I2)=m1-m2 A.39.811 B.20.593 C.5...
*Saturday, April 9, 2016 by Student*

**math**

Sam has 9yellow pencils in his desk three fourth of his pencils are yellow how many pencils does sam have in his desk
*Saturday, April 9, 2016 by Daniel *

**Math**

For this problem it says to explain why an equilateral scalene triangle is impossible to draw. Would it be because not all three sides will be equal?
*Saturday, April 9, 2016 by Jay*

**Math**

You are fencing in a rectangular area The length is x+5 and the width is x. The total area is 350 ft² . Find the perimeter.
*Saturday, April 9, 2016 by Dnje*

**Math**

A wheel makes6 1/12 revolution per minute. If it rotates 45 minutes,how many revolutions does it make
*Saturday, April 9, 2016 by Albert*

**math**

jeremy withdraws cash from an ATM that is not his own bank's 6 times a month. He pays $1.25 per transaction. if this pattern is consistent across a year, what will his yearly cost be? a) $90.00 b) $45.00 c) $15.00 d) $7.50 marley decides to invest in a Tax Free savings ...
*Saturday, April 9, 2016 by ben 8 grade*

**math**

Three switches are to be installed in a panel. The switches are each 21/2 inches wide. There will be 11/4 inches clearance between switches and 37/8 inches between any switch and the edge of the box. How wide is the box?
*Saturday, April 9, 2016 by Anonymous*

**Math**

suppose you have two prisms with the same volume. one is shaped like a cube and the other is "longer." which has the lesser surface area?
*Saturday, April 9, 2016 by Elizabeth*

**math**

LOG(base5)(3/5)+3log(base5)(15/2)-log(base5)(81/8)
*Saturday, April 9, 2016 by olaide*

**math, science, hindi, english, sst**

In triangle ABC, AB=4cm, AC=8cm and AM=3cm. AM is the median which meets BC and M. Then, BC is equal to
*Saturday, April 9, 2016 by ujjwal*

**math**

One car went 10 miles farther when traveling at 50 mph than a second car that traveled 2 hours longer at a speed of 40 mph. How long did the first car travel?
*Saturday, April 9, 2016 by Anonymous*

**math**

Distributive Property -2/3 (c-12)= -5y (6z-10)= THANK YOU!
*Saturday, April 9, 2016 by Tim*

**math**

If f(x) = 2x + 3 and g(x) = 3x - 2 find (f(g(f(2))))/{g(f(g(2)))). Express your answer in the form (a)/(b).
*Saturday, April 9, 2016 by Mal*

**Math**

What is the shortest distance between the circles defined by x^2-10x +y^2-4y-7=0 and x^2+14x +y^2+6y+49=0?
*Saturday, April 9, 2016 by Annonymous*

**math**

the formula S=c(1+r)^2 models inflation, where C= the value today, r=the annual inflation rate, and S= the inflated value t years from now use this formula to solve the problems: If the inflation rate is 6% how much will a house now worth $465,000 be worth in 10 years? If the ...
*Saturday, April 9, 2016 by anonmyous*

**Math/Algebra**

Let f(x) = (3x - 7)/(x + 1). Find the inverse f^(-1)(x).
*Saturday, April 9, 2016 by Jane*

**math**

Max served pizza at his birthdayparty. Max ate 3/6 of a pizza and Becky ate 1/6 of the same pizza. How much more did Max eat than Becky?
*Saturday, April 9, 2016 by Anonymous*

**Math **

Jasmine invested $73,000 in a fixed rate account offering 7.2% interest rate compounded semiannually. How long will it take her to grow it to $100,000? 100,000=(73,000)(0.072)^2)t
*Saturday, April 9, 2016 by Janice*

**Probability (Math)**

The lunch special at Teresa's Restaurant is a sandwich, a drink and a dessert. There are 2 sandwiches, 3 drinks, and 2 desserts to choose from. How many lunch specials are possible? I tried 2*3*2=12, but I am not sure about my answer.
*Saturday, April 9, 2016 by Mantaro*

**math**

area of trapezium is 267square mt.parallel sides are 6m and 30m non parallel sides is 2m less then other find the length of non parallel sides.find the length of non parallel side
*Saturday, April 9, 2016 by ravi*

**Math**

find all the other zeroes of the polynomial x^4+4x^3-4x^2-32x-32 if two of its zeroes are 2 root 2 and -2 root 2
*Saturday, April 9, 2016 by Prithvi*

**math**

24 miles per hour equal how many yards per minute? How is the answer 352yd/min??? --the way I'm doing it is: 24 mi/1h x 1760 yd/1mi x 1h/60min = 42,240yd/60min = 704yd/min THANK YOU!
*Saturday, April 9, 2016 by Tim*

**MATH **

How much would you have to invest into a 5 year certificate of deposit paying 2.3% compounded weekly to make it worth $4500 at the end of the term? A=P(1+r/n)^nt 4500=P(1+0.023/52)^52(5) I am receiving a syntax error please help
*Saturday, April 9, 2016 by KAYLA*

**math**

the family of curves ( x^2)( y^2)=c^2
*Saturday, April 9, 2016 by fatimaaa*

**math**

Solution of 2xyy' + 3x = -2 y^2
*Saturday, April 9, 2016 by fatimaaa*

**math**

DE x y dx +( x^2 + y ^2 ) dy =0
*Saturday, April 9, 2016 by fatimaaa*

**math**

DE (x-2y) dx + y dy = 0
*Saturday, April 9, 2016 by fatimaaa*

**math**

which expressions represents the solutions of -5+2x^2=-6x?? I NEED HELP!!!
*Saturday, April 9, 2016 by saliha*

**math**

which expressions represents the solutions of -5+2x^2=-6x
*Saturday, April 9, 2016 by saliha*

**consumer math **

The Jones hope to accumulate $12000 for a sunroom over the next 6 yrs. How much would they need to invest right now at 3.9% compounded quarterly to reach goal? Please help
*Saturday, April 9, 2016 by Ron*

**math**

7 2/3 - 1 1/2 of 3 1/3 * 3/4 = 23/3 - 3/2 x 10/3 * 3/4 = 10/3 * 3/4 = 10/3x4/3 = 10x4 / 3x3 = 40/9 = 23/3 - 3/2 = 37/6 = 6 1/6 ANSWER : 6 1/6
*Friday, April 8, 2016 by dawn*

**MATH **

The Olympic-size pool at the recreational center is a right rectangular prism 50m long and 25 m wide. The pool contains 3000m of water How deep is the water in the pool?
*Friday, April 8, 2016 by rish*

**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*