All Questions ⁺⁰237750 Questions

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143

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proportion

Each gallon of paint covers 200 square feet. I have to paint one side of a wall that is 15 meters tall and meters long. If a foot is approximately 0.3048 meters, then what is the smallest whole number of gallons I can buy read more ..

Guest Jun 2, 2023

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130

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percent

In a store window, there was a box of berries having a total weight of 200 kg. The berries were 99% water, by weight. After two days in the sun, the water content of the berries was only 90%, by weight. What was the total weight of read more ..

Guest Jun 2, 2023

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138

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help me

In Linguistics 101, the ratio of the number of juniors to the number of seniors is 3:2. When six more juniors join the class, and one senior drops the class, the ratio of the number of juniors to the number of seniors becomes . How many read more ..

Guest Jun 2, 2023

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133

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solve

Alice and Bob each have a certain amount of money. If Alice receives n dollars from Bob, then she will have 7 times as much money as Bob. If, on the other hand, she gives n dollars to Bob, then she will have times as much read more ..

Guest Jun 2, 2023

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136

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help plz

The system of equations
\[\frac{xy}{x + y} = 1, \quad \frac{xz}{x + z} = 2, \quad \frac{yz}{y + z} = 1\]
has exactly one solution. What is $z$ in this solution?

Guest Jun 2, 2023

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149

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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 2, 2023

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134

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right triangles

Let ABC be a right triangle, and let H be the point on side AB so that CH is perpendicular to AB. Prove that (x + h)^2*(y + h)^2 = (a + b)^4.

Guest Jun 2, 2023

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147

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algebra

Real numbers a and b satisfy
a + ab = 250
a - ab = -240
Enter all possible values of a, separated by commas. read more ..

Guest Jun 2, 2023

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58

4

help plz

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

Guest Jun 2, 2023

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132

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help plz

Let a and b be real numbers such that a-b=4 and a^3 - b^3=0
(a) Find all possible values of ab
(b) Find all possible values of a+b
(c) Find all possible values of a and b

Guest Jun 2, 2023

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124

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system

At a cafeteria, Mary orders two pieces of toast and a bagel, which comes out to $3.15. Gary orders a bagel and a muffin, which comes out to $3.50. Larry orders a piece of toast, two bagels, and three muffins, which comes out to $8.15. How many cents does read more ..

Guest Jun 2, 2023

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1

111

1

How many ounces are in a gallon?

How many ounces are in a gallon?

Guest Jun 2, 2023

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144

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ratios

A bag contains yellow, green, blue, and white marbles. The ratio of yellow, green, blue, and white marbles is 1:2:3:4. If the bag contains 180 marbles, then how many blue marbles are there?

Guest Jun 2, 2023

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143

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polygon

Let B, A, and D be three consecutive vertices of a regular -gon. A regular heptagon is constructed on line AB with a vertex C next to A. Find angle BCD in degrees.

Guest Jun 2, 2023

Jun 1, 2023

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148

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+25

I need help

Function g is defined as follows:
\[g(x) = \left\{
\begin{array}{cl}
5x^2 & \text{if } x \le -3, \\
21+x& \text{if }-3 < x \le 10, \\
2-\sqrt{x}& \text{if }x > 10.<#> \end{array}\right.\] read more ..

Guythatneedshelp Jun 1, 2023

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