03/31/16

answer the riddle
Twice eight are ten of us, yet ten is just three.Five of us are seven.Can you now see?If this is not enough, I will tell you a bit more.Eight of us are nineteen, and nine is just four.
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03/30/16

Show that if n is any integer, then 3n + 4 and 6n + 7 are relatively prime.
Show that if n is any integer, then 3n + 4 and 6n + 7 are relatively prime.
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03/30/16

To be sure the number she wrote was prime, she would need to test each prime divisor from 2-29. What is the smallest number she could've written?
A teacher wrote a number on the blackboard. She indicated that to be sure whether or not the number she wrote was prime, she would need to test each prime divisor from 2-29. What is the smallest... more
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03/30/16

In art class,40% of the students use watercolors for painting.Ten students in the art class used watercolors.How many students are in art class?
I can't fifure it out.can you help me
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03/29/16

How do I find the height of a square pyramid that has a volume of 873.18m^3 and a length of 12.6m
Find the height of a square pyramid that has a volume of 873.18m^3 and a length of 12.6m.
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03/29/16

Need help for this question!
Determine the integer values of n for which n^2-18n+45 is a prime number. 
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03/28/16

what is solving systems of equations word problems
Kiana and Jacobi each have a collection of identical red and blue marbles. Kiana's collection of 12 red marbles and 8 marbles weighs 68 grams. Jacobi's collection of 20 red marbles and 12 blue... more
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03/28/16

help with this probability question.
A refrigerator contains 6 apples, 5 oranges, 10 bananas, 3 pears, 7 peaches, 11 plums, and 2 mangos. Imagine you stick your hand in this refrigerator and pull out a piece of fruit at random. What... more
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03/28/16

did i solve this correctly?
You can flip a coin three times. a) what is the probability of getting heads on only one of your flips? b) what is the probability of getting heads on at least one flip?   So this is how i got... more
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03/28/16

This is a geometry question involving volume and a cube.
teri has an aquarium that is a cube with edge lengths of 24 inches. the aquarium is 2/3 full of water she has a supply of ball bearings each having a diameter of 3/4 what is the maximum number of... more
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03/28/16

Need help help with this algebra 2 question.
Part 1: Find the slope of the line that passes through the points (2, 1) and (2, 0).Part 2: In two or more complete sentences, explain why it is not possible to write the equation of the given line... more
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03/27/16

help please
there are 300 secondary 4 students at a secondary school and 40% of them have bicycles. of the remaining grades (secondary 1,2,3), only 10% of them have bicycles. if 15% of all the students have... more
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03/27/16

the garden is a regular hexagon each side is 4 meters long the garden will be divided into 6 equilateral triangles what is the approximate surface area
all work needs to be shown. the 6 equalteral triangles will have a different typr of flower planted in each triangle
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03/27/16

time speed distance
A thief is spotted by a policeman from a distance of 100 meters when the policeman starts the chase the thief also starts running if the speed of the thief be 8 kmh and that of the policeman 10kmh... more
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03/24/16

Find all solutions
|x-10|=x^2-10x
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03/24/16

Find the volume of a cone with a base radius of 5yd and a height of 10yd . Write the exact volume in terms of p
 I need to have this answered because I am confused.
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03/24/16

Last one, bikes on a trail distance variable
Sean and Madison bike along the same trail. Madison bike the entire trail at a speed of 20 MPH and Sean bikes it at a speed of 15 MPH. Madison finishes biking the entire trail 8 minutes before... more
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03/24/16

How do I solve this? I've tried everything i know of!
Ann, Matt and Zack are working for a cleaning company. Together they can clean a house in 2 hours. If Ann does the job alone she can finish it in 5 hours. If Matt does the job alone he can finish... more
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03/24/16

Please help me with the probability?
An urn contains 3 red balls and 6 white balls. Draw 3 balls randomly one after another without replacement. Find the probability that the second and third balls are the same color. Show work
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03/24/16

-12(-6x-4) < 66
This problem is hard for me but not to you. please get it right or i get in trouble!
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03/23/16

I need some help with these three questions!!! Multiply, then put your answer in simplest form: (2 sqrt(2) + 1) (3 sqrt(2) - 2)
(2 sqrt(2) + 1) (3 sqrt(2) - 2) A: -2 + 5 sqrt(2) B:10 - 7 sqrt(2) C: 12 - sqrt(2) D: 10 + 7 sqrt(2) E: 10 - sqrt(2)   (sqrt(5) + 3) (sqrt(5) - 2) A: -1 + sqrt(5) B: -6 + 6 sqrt(5) C: -1 + 5... more
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03/23/16

The length of a room is 5 feet less than triple its width. The perimeter of the room is 54 feet. What is the length of the room
The problem is a word problem.
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03/22/16

S13 of -5+1+7...+67
Find the indicated sum of each arithmetic series.
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03/22/16

What could be the possible third length of a triangle with two given side lengths of 7 and 13?
I dont understand this question at all.....
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03/22/16

word problem
Joe and nancy decide to take a road trip. The first 64 miles of the drive is pretty easy, while the last 140 miles of the drive is filled with curves. They drove at an average of 7 miles per hour... more
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