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3 years ago

Mari spends $6 on cheese for a party she also plans to buy b boxes of crackers that cost $3 per box

Mathematics

1 answer:

valkas [14]3 years ago

5 0

Answer:

6+3b=x

Step-by-step explanation:

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Whats the exanded expression for -7(k-3)

gizmo_the_mogwai [7]

Answer:

-7k+21

Step-by-step explanation:

Distributive Property:

↓

$A(B+C)=AB+AC$

A=-7, B=K, and C=3

-7k+7*3

Multiply by the numbers from left to right to find the answer.

7*3=21

-7k+21 is the correct answer.

4 0

3 years ago

a group of four students is performing an experiment with salt each student must a 3/8 teaspoon of salt to a solution the group

Natalka [10]

The group with need to fill the spoon a total of 3 times this is because 1/8+1/8+1/8=3/8

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What's 1831 divided be 51?

Shtirlitz [24]

your answer to that division problem is 35.9

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3 years ago

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Find the straight time pay if you earn $7.90 per hour and worked 37 hours.

S_A_V [24]

Answer: $292.30

Step-by-step explanation:

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3 years ago

Find the length of the radius of the circle whose perimeter is xcm and the area is

Jobisdone [24]

$\bf \stackrel{\textit{perimeter}}{\textit{circumference}}\textit{ of a circle}\\\\ C = 2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=x \end{cases}\implies x = 2\pi r\implies \boxed{\cfrac{x}{2\pi }=r} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ A=x \end{cases}\implies x = \pi \left( \boxed{\cfrac{x}{2\pi }} \right)^2\implies x = \pi \cdot \cfrac{x^2}{2^2\pi^2}$

$\bf x = \cfrac{x^2}{4\pi }\implies 4\pi x = x^2\implies \cfrac{4\pi x}{x}=x\implies \blacktriangleright 4\pi = x\blacktriangleleft \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{since the radius is}}{r = \cfrac{x}{2\pi }}\implies r =\cfrac{4\pi }{2\pi }\implies \blacktriangleright r = 2\blacktriangleleft$

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3 years ago

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