All Questions ⁺⁰237740 Questions

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134

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solve

Solve for the variable x in terms of y and z, assuming y \neq \frac{1}{2}:
xy + x = \frac{3x + 2y + z + y + 2z}{3}

Guest Jun 5, 2023

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151

1

system

Find the ordered triple (p,q,r) that satisfies the following system:
p - 2q = 3
q - 2r = -2 + q
p + r = 9 + p read more ..

Guest Jun 5, 2023

Jun 4, 2023

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126

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Help

A single chain supports a pulley that weighs 40N, so two identical 80N weights are connected with a rope that passes over the pulley. What is the tension of the chain that supports the whole assembly?

Guest Jun 4, 2023

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148

1

help plz

A plane flies from Penthaven to Jackson and then back to Penthaven. When there is no wind, the round trip takes 3 hours and 36 minutes, but when there is a wind blowing from Penthaven to Jackson at 20 miles per hour, the trip takes read more ..

Guest Jun 4, 2023

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119

4

proportion

In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R:
I = V/R
It's also true that resistance is directly proportional to the length of the wire. We read more ..

Guest Jun 4, 2023

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135

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proportion

All members of our painting team paint at the same rate. If 20 members can paint a 2000 square foot wall in 40 minutes, then how long would it take the 20 members to paint a 6000 square foot wall, in minutes?

Guest Jun 4, 2023

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150

2

rate problem

I drove to the beach at a rate of 40 miles per hour. If I had driven at a rate of 42 miles per hour instead, then I would have arrived 45 minutes later. How many miles did I drive?

Guest Jun 4, 2023

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134

1

proportion

I have to paint one side of a wall. The wall is 12 meters tall and 120 meters long. Each gallon of paint covers 150 square feet. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons read more ..

Guest Jun 4, 2023

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135

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help hard geo

This is some very hard geometry
Triangle XYZ is equilateral. Points Y and Z lie on a circle centered at O, such that X is the circumcenter of triangle OYZ, and X lies inside triangle OYZ. If the read more ..

Guest Jun 4, 2023

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90

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+1124

Word sum

Hi friends,
I trust you are all well...please help with a word sum...it's a bit above me...

Ben and Angie go shopping. The both have the same amount of money, read more ..

juriemagic Jun 4, 2023

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152

1

help me

Find the number of ways of arranging the numbers 1,2 ,3, 4, 5, 6, 7, 8, 9 in a row so that the product of any two adjacent numbers is even.

Guest Jun 4, 2023

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130

1

+1348

digits

For her 16th birthday, Kate receives a book. On each page whose digits sum to 16, there is one word of a secret birthday message written in the margin. If the book is 2800 pages, how many words are in the secret birthday mesasage?

sandwich Jun 4, 2023

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146

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+1348

need help

In a regular icosagon (20-sided polygon), all the diagonals are drawn. If a diagonal is selected at random, what is the probability of selecting a diagonal that is either the second-shortest possible length or the second-longest possible length? Express read more ..

sandwich Jun 4, 2023

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69

1

+1348

help plz

A haiku is a poem with three lines: the first line contains 5 syllables, the second line 7 syllables, and the last line 5 syllables. If each word in each list shown is used at most once, how many different haiku can be made with these read more ..

sandwich Jun 4, 2023

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152

1

solve

A candy bar and a piece of bubble gum together cost 1.50. The candy bar costs a dollar more than the bubble gum. How much does the piece of bubble gum cost, in cents?

Guest Jun 4, 2023

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128

0

help plz

Let a and b be real numbers such that a^3 + 3ab^2 = 679 and a^3 - 3ab^2 = 615. Find a + b.

Guest Jun 4, 2023

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96

4

+70

mathh

Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 4 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have 3 times as much money as Bob. If neither read more ..

sheeshers Jun 4, 2023

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