Tuesday

March 3, 2015

March 3, 2015

**Branches of Math**

**Recent Math Questions**

Post a New Question | Current Questions

**Math**

How to simplify e^27x?
*Thursday, January 8, 2015 at 7:53pm*

**Math**

a pool 5 feet deep with a diameter of 40 feet is filled with water in 50 minutes. how long will it take to fill a pool that is 6 feet deep with a diameter of 36 feet?
*Thursday, January 8, 2015 at 7:14pm*

**math**

In a box there are 20 balls.7 of the balls are white. The first ball drawn from the box is white. What is the probability that the second ball will be white
*Thursday, January 8, 2015 at 7:10pm*

**math**

Ke is twice as old as Amy. Seven years ago, the sum of their ages was 31. How old is each person this year.
*Thursday, January 8, 2015 at 7:02pm*

**Math**

In the cafeteria's refrigerator, cups of yogurt are kept in stacks of 9. If each worker carries no more than one stack, what is the least number of workers needed to carry cups of yogurt for a class of 42?
*Thursday, January 8, 2015 at 7:00pm*

**math**

24=2(2x+6) 12-3(2x-6)=(-2x+6)+2 -(x-5)+2/3=2(x+5)
*Thursday, January 8, 2015 at 6:59pm*

**math**

6(4x+9)=64 plz show how u get this answer...
*Thursday, January 8, 2015 at 6:53pm*

**Math**

A cake recipe requires 2 cups of milk.How many batches can be made using 2 gallons?
*Thursday, January 8, 2015 at 6:51pm*

**MATH**

Julia and Kevin are playing games at the arcade. Julia started with $15, and the machine she is playing costs $0.75 per game. Kevin started with $13, and his machine costs $0.50 per game. After how many games will these two kids have the same amount of money remaining? Set up ...
*Thursday, January 8, 2015 at 6:46pm*

**math**

Ke is twice as old as Amy. Seven years ago, the sum of their ages was 31. How old is each person this year
*Thursday, January 8, 2015 at 6:44pm*

**math**

The perimeter of a sheet of paper is 38 cm. If the width is 8 cm what is the length of the paper? P = 2L + 2W 38 = 2L + 2(8) 38 = 2L + 16 22 = 2L 11 = L is 11 the answer
*Thursday, January 8, 2015 at 6:42pm*

**math**

Julie has $200.There is a one-time fee $150 to reserve a room. It also cost $1.0 per person for food and drinks. what is the maximum number of people that can come to the dance?
*Thursday, January 8, 2015 at 6:00pm*

**Math**

if x-7=14 what is the value of x-2 Can someone help me with this. I know the answer, I just want to know how something like this is solved.
*Thursday, January 8, 2015 at 5:43pm*

**Math **

What is the smallest integer that can possibly be the sum of an infinite geometric series whose first term is 9? Please explain in steps.
*Thursday, January 8, 2015 at 5:40pm*

**math**

Write at least 4 other expressions equivalent to 5*5*5*5*5*5 i already have 5^6 and -5^6 wat else am i missing? thanks for your help
*Thursday, January 8, 2015 at 4:16pm*

**Math **

What is the smallest integer that can possibly be the sum of an infinite geometric series whose first term is 9? Please explain in steps.
*Thursday, January 8, 2015 at 4:01pm*

**Math**

So, my teacher decided to drop a worksheet on us without actually teaching us the lesson or showing us how to do any of the problems. If someone could help me with these, that would be amazing! Thanks so much! :) Directions: Simplify the expressions. 1.) Sec^2 x-1 2.) 1/sinx 3...
*Thursday, January 8, 2015 at 3:41pm*

**Math**

Find the value of csc theta for angle theta in standard position if the point at (5,-2) lies on its terminal side.
*Thursday, January 8, 2015 at 3:38pm*

**math **

the sum of a number and 19 is at least 8.2.
*Thursday, January 8, 2015 at 2:15pm*

**math**

9x+5=7 What does x equal?
*Thursday, January 8, 2015 at 1:23pm*

**math**

ABC is a triangle inscribed in a circle centre O..angle ACB =40¡ã and line And =xcm.calculate the radius of the circle.
*Thursday, January 8, 2015 at 1:21pm*

**Math**

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/x^2-3x-4 - 4/x+1
*Thursday, January 8, 2015 at 1:19pm*

**Math**

Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x/x+1 x x^2-1/x^2+x-6
*Thursday, January 8, 2015 at 1:13pm*

**Math**

Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks) - Show your work g(x)=2x^2-7x+3/x-3, f(x)=2x+1
*Thursday, January 8, 2015 at 1:12pm*

**Math**

Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks - show your work) g(x)=6x^2+x-12/2x+3,f(x)=3x-4
*Thursday, January 8, 2015 at 1:11pm*

**Math**

i) Predict whether the functions in each pair are equivalent by testing three different values of x. (3 marks each - show your work) ii) Determine whether the functions in each pair are equivalent by simplifying the expression on the right side. (2 marks each = show your work...
*Thursday, January 8, 2015 at 1:10pm*

**Math**

Solve and check. ( 3 marks) 5/(x-1)+2/(x+1)=-6
*Thursday, January 8, 2015 at 1:06pm*

**Math**

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/(x^2-3x-4)-4/(x+1) Please help me!
*Thursday, January 8, 2015 at 1:04pm*

**Math**

Points P and Q are tries toom points on segment AB. If AQ =7x+6 and PQ= 3x+5, find all possible values for the length of AB. So far I've established that 4x+1 is the length of AP and QB So the total length of AB should be 11x+7 I think, I'm not sure how to solve and ...
*Thursday, January 8, 2015 at 12:14pm*

**Physics and Math**

[a bullet weighing 50gm hits a 10cm wall with velocity 100ms-1 and comes out of the wall. If the frictional force on the bullet while in the wall is assumed to be a constant 2000N then with what velocity does the bullet come out of the wall?
*Thursday, January 8, 2015 at 12:08pm*

**math**

-1<2x÷3+1<or=4,x belongs to Integers
*Thursday, January 8, 2015 at 11:55am*

**math**

-1<2x÷3+1<or=4,x belongs to Integers
*Thursday, January 8, 2015 at 11:52am*

**math**

Graph f(x)=|x|^3
*Thursday, January 8, 2015 at 10:57am*

**Math**

A rocket is fired straight up from a 60 ft. platform with an initial velocity of 96 ft/sec. The height of the rocket, h(t), is found using the function h\left( t \right) = - 16{t^2} + 96t + 60 where t is the time in seconds. Find the maximum height.
*Thursday, January 8, 2015 at 10:53am*

**Physics and Math**

[a bullet weighing 50gm hits a 10cm wall with velocity 100ms-1 and comes out of the wall. If the frictional force on the bullet while in the wall is assumed to be a constant 2000N then with what velocity does the bullet come out of the wall?
*Thursday, January 8, 2015 at 9:15am*

**Math **

A certain infinite geometric series has first term 7 and sum 4. What is the result when the third term is divided by the second term?
*Thursday, January 8, 2015 at 8:55am*

**Physics and Math**

A small ball with a mass of 1 kg rolls down a long frictionless inclined ramp, which is at an angle 3o Degree above the horizon. A linear spring, whose length is not negligible, is attached to the bottom of the ramp. The ball is released from a distance of 1 m above the spring...
*Thursday, January 8, 2015 at 8:42am*

**math**

An arithmetic series consists of five terms; the second term is 7 and the last term is 22. write out the full series.
*Thursday, January 8, 2015 at 5:01am*

**Math**

Ben is making wooden toys for the next art and craft sale each toy cause Ben $1.80 to make. If he sells the toy for three dollars each how many will he have to sell to make a profit of exactly $36?
*Thursday, January 8, 2015 at 2:29am*

**College Algebra**

According to data from the National Vital Statistics Report, the marriage rate (marriages per 1000) can be described by y=-0.146x+11.074, where x is the number of years after 1980. For what years does this model indicate that the marriage rate was above 9 marriages per 1000? ...
*Thursday, January 8, 2015 at 1:27am*

**Math 1 please help**

A clothing store has the sign shown in the shop window. Pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. The cost of each shirt before the discount is $12 and the cost of each pair of jeans is $19 before the discount. Question 1. Pani says she should get a $3...
*Thursday, January 8, 2015 at 12:31am*

**Math**

Eryn and seven of her friends go out to lunch. The total bill comes to $143.35. They decide to leave a 15% tip. Each person will contribute an equal amount to the total tip. Estimate what each person should contribute.
*Wednesday, January 7, 2015 at 11:49pm*

**math**

joshua won $250000 in a draw to support the local hospital. he does not need the money for 3 months, so he decides to invest it in an account that pays 8% simple interest annually. calculate the interest paid on joshua's investment at the end of the 3 month period.
*Wednesday, January 7, 2015 at 11:25pm*

**Math**

A search on colony of bacteria triples and links every 10 minutes it's links is now 1 mm how long will it be in 40 minutes?
*Wednesday, January 7, 2015 at 11:09pm*

**math**

two complementary angles are drawn such that one angle is 10° more than seven times the other angle find the measur of each angle
*Wednesday, January 7, 2015 at 11:02pm*

**Math 10 aw**

george is in a hot air balloon that is 125 metres high. the angle of elevation from a house below, to the balloon is 18 degrees. how far is george from the house
*Wednesday, January 7, 2015 at 10:10pm*

**math**

The perimeter of a sheet of paper is 38 cm. If the width is 8 cm what is the length of the paper?
*Wednesday, January 7, 2015 at 9:55pm*

**Math**

Find the y-intercept of the line whose equation is y=1.3x-0.4 Thank you Could you show me how to do this problem.
*Wednesday, January 7, 2015 at 9:50pm*

**sixth grade math**

Write a real-world situation that could be modeled by the equation 24/y=3. Then solve the problem. My answer: There are 24 seats available at the movies. There were total of 3 rows after the seats were divided and more seats on each row. Did I solve this problem correctly?
*Wednesday, January 7, 2015 at 9:40pm*

**math**

a delivery truck is loaded with 1200 melons. if 3/8 of the melons were given to one store, 1/2 of the remainder to a second store and rest to a third store, how many melons were given to the third store?
*Wednesday, January 7, 2015 at 9:33pm*

**math**

max has a total of 30 cars in 5 packages he gave his brother 2 packages how many cards di he have left
*Wednesday, January 7, 2015 at 9:22pm*

**math**

517 men,3418 women and 6281 children visited a fair.round each number to the nearest hundred and estimate the number of people who visited the fair.
*Wednesday, January 7, 2015 at 9:15pm*

**Math**

there is two questions that I need help with: The variable x represents a real number between 10 and 20 inclusive.The variable Y represents a real number between .2 and 5,inclusive.What is the greatest possible integer value of the quotient x/y? 2nd question: A square with an ...
*Wednesday, January 7, 2015 at 9:12pm*

**Math**

How much money would a person need to deposit today at 9% annual interest compounded monthly to have 12000. in the account after 6 Years?
*Wednesday, January 7, 2015 at 9:12pm*

**math**

find the fraction between 2/3 and 3/4 with a numerator of 17.
*Wednesday, January 7, 2015 at 9:11pm*

**Math**

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x divided by x^2-3x-4 subtracted by 4 divided by x +1
*Wednesday, January 7, 2015 at 9:09pm*

**Math**

Solve: 1 + 2x/x+4=3/x-1
*Wednesday, January 7, 2015 at 9:05pm*

**math**

the length of a rectangle is 10 cm longer than the width. what is the area of the rectangle if the width is 15 cm?
*Wednesday, January 7, 2015 at 8:50pm*

**math**

how is finding a fractional part of a set different than finding a fractional part of a whole?
*Wednesday, January 7, 2015 at 8:47pm*

**Math**

What is the period of the function? f(x)=sin(1/7)x I think its 2pi
*Wednesday, January 7, 2015 at 8:46pm*

**Math**

Evaluate 6(w+7)-5x W=1.3 and x=0.9
*Wednesday, January 7, 2015 at 8:31pm*

**math**

five oranges and an apple cost 87.00; five apples and one orange cost 99.00. how much do 2 oranges and 2 apples cost?
*Wednesday, January 7, 2015 at 8:27pm*

**Math**

Writing a formula to the surface area of a cube of its length x is edge length=x over six right ? Or I did it wrong
*Wednesday, January 7, 2015 at 8:19pm*

**Math**

Hi im lost on my last question. k^-3 = 1/256 this is negative exponets "^-3" that is a negative exponent, I need to know the value of k? a)-64 b)-4 c)4 d)64 I was thinking 64, eh I dont understand this one. Thanks!
*Wednesday, January 7, 2015 at 8:17pm*

**Math**

Please help :( find the lateral and total surface of each prism round if nesccesary and a rectangle has one side 2 ft one 4ft and one 4.5
*Wednesday, January 7, 2015 at 8:16pm*

**Math**

14 16 18 18 17 16 17 20 What is the range of the data set? Is this correct? 20-14=6
*Wednesday, January 7, 2015 at 8:13pm*

**Math**

The bases of a prism are right trinanges with side lengths 6 meters, 8 meters and 10.. The height of the prism is 3 meters. What's is the lateral area of the prism? What is the total surface area?
*Wednesday, January 7, 2015 at 8:12pm*

**math**

find a fraction between 2/3 and 3/4 with a numerator of 17.
*Wednesday, January 7, 2015 at 8:10pm*

**Math**

Maddie plays her guitar for 60 minutes each day. She uses 25% of her practice time to practice chords. How many minutes does Maddie practice chords each day?
*Wednesday, January 7, 2015 at 8:05pm*

**math**

answer and solution of nina bought 2 1/3 meters of yellow cloth and 1 1/2 meters of red cloth. she used 8/3 meters for a costume dress. how much cloth remained?
*Wednesday, January 7, 2015 at 8:04pm*

**Math**

write a multiplication expression with a product of 5 to the 13th power
*Wednesday, January 7, 2015 at 7:56pm*

**math**

nina bought 2 1/2 meters of yellow cloth and 1 1/2 meters red cloth.she used 8/3 meters for a costume dress. how much cloth remained?
*Wednesday, January 7, 2015 at 7:55pm*

**math**

answer and solution of lucy had 2 1/2 apples.she cut into fourths. if she had enough fourths for herself and the friends with her, how many of them were there?
*Wednesday, January 7, 2015 at 7:43pm*

**math**

On Monday, 247 students went on a trip to the zoo. All six buses were filled and seven students had to travel in cars.How many students were in the bus
*Wednesday, January 7, 2015 at 7:22pm*

**Math**

There are 7 cupcakes for the party. Each cupcake has 1 candle for each year of the boy's birthday age. There is also an extra candle on each cupcake for good luck. If 49 candles were used on the cupcakes, how old is the birthday boy? Explain.
*Wednesday, January 7, 2015 at 7:14pm*

**math**

lucy had 2 1/2 apples.she cut them into fourths.if she had enough fourths her self and the friends with her ,how many of them were there?
*Wednesday, January 7, 2015 at 7:06pm*

**Math**

Ava, Keirra, and Victoria ate exactly 3/4 of their candy bars. Ava ate 3 pieces, Kierra ate 6 pieces and Victoria ate 9 pieces. How is this possible?
*Wednesday, January 7, 2015 at 6:52pm*

**8th grade math**

iPhone is designing a smart phone with a square screen. The area of the screen will be 169 cm with an exponent of 2. What is the height of the screen? I think the answer is 13. Am I correct.
*Wednesday, January 7, 2015 at 6:41pm*

**math**

I'm very confuse my teacher talk bout her life in never teach us students the math lesson. y=3/2x-1 y=-x+4
*Wednesday, January 7, 2015 at 6:41pm*

**math**

yesterday, molly lunch cost $9.80 and she left a $1.49 tip, today molly lunch cost $12.60 if she tips at the same rate that she did yesterday how much of a tip should molly leave
*Wednesday, January 7, 2015 at 6:31pm*

**Math**

In the Atlantic ocean off the coast of Bermuda lies a 500,000 square mile region called th Bermuda triangle . If the sides of the triangle are about 959 miles, 1,011'miles, and , 1,033, prove whether or not the Bermuda trian is a right triangle ?
*Wednesday, January 7, 2015 at 6:24pm*

**Math**

A company prints 22,860 tickets. The tickets are placed into groups of 125. How many groups of tickets are made? Is this correct 182
*Wednesday, January 7, 2015 at 4:49pm*

**Math**

A rectangle has a length of 15 inches and a width of 12 inches, what is the perimeter? Is this answer correct. 54
*Wednesday, January 7, 2015 at 4:41pm*

**math**

A car traveled 180 miles and use 6 gallons of gas if the same car traveled 1260 miles under similar conditions how many gallons of gas would be used
*Wednesday, January 7, 2015 at 4:37pm*

**Math**

75 75 84 81 84 81 81 80 What is the mode of the data set?
*Wednesday, January 7, 2015 at 4:36pm*

**Math**

Find the vertex: -1/4x^2+9/5x+2
*Wednesday, January 7, 2015 at 4:22pm*

**Math**

Find the value of (2/3)^4
*Wednesday, January 7, 2015 at 4:05pm*

**Math**

A strand of lights had 50 light bulbs. 8 bulbs burned out. Write the ratio of the total number of bulbs to the bulbs that are burned out. Show the ratio all 3 ways, in simplest form.
*Wednesday, January 7, 2015 at 4:04pm*

**math**

y/4 divided by 1/4 1,y,4y, or 4 cn you show how to solve?
*Wednesday, January 7, 2015 at 2:52pm*

**math**

(2,−2);{y<x−3 y>−x+1
*Wednesday, January 7, 2015 at 2:49pm*

**math**

on a certain day the propellers complete 20 revolutions per minute and have a speed at of 45 m/s calculate the radius of a propeller to one decimal place using pie as 3.14 ?
*Wednesday, January 7, 2015 at 2:36pm*

**math**

Sara has 6 necklaces, but her mother will only allow her to wear two at a time. How many different ways can Sara wear two necklaces? A. 30 B. 15 C. 360 D. 12
*Wednesday, January 7, 2015 at 2:25pm*

**Math**

Solve: 1+2x/x+4=3/x-1
*Wednesday, January 7, 2015 at 12:55pm*

**Math**

1) Prove that for every x>=0 and 0<a<1 x^a-ax<=1-a 2)prove that for 0<=x<=1: x^m*(1-x)^n<= (m^m*n^n)/((m+n)^(m+n)) can someone please guide/help me in about how to solve and or approch these questions? (I know I have already posted it before but i think it...
*Wednesday, January 7, 2015 at 12:51pm*

**Math**

Simplify each expression and state any non-permissible values. (5 marks - show your work) 3x+1/2x^2-2 + 2x+2/2x^2-8x+6 is the expression Can you help please?
*Wednesday, January 7, 2015 at 12:50pm*

**Math**

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/ x^2-3x-4 - 4/x+1
*Wednesday, January 7, 2015 at 12:49pm*

**math**

Emily's family loves to work together in the garden. They have a slight preference for flowers, as 60% of their plants are flowers and 40% are vegetables. They have 50 plants growing in the garden. How many vegetable plants do they have?
*Wednesday, January 7, 2015 at 11:41am*

**Math**

Solve for y: x = (x+1)(x+y)
*Wednesday, January 7, 2015 at 11:32am*

**math**

A large bag of sugar weighs 7 1/2 pounds. How much does 1 1/4 bags of sugar weigh? I really need help with this question. the first problem is that I don't know what operation to use and second I don't understand the main problem of this question.
*Wednesday, January 7, 2015 at 11:29am*

**math**

The record for the fastest speed on a bicycle is 133 kilometers per hour. How long would it take a person traveling at this speed to travel 365.75 kilometers? hours and minutes
*Wednesday, January 7, 2015 at 10:33am*

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