If 3/4 gallon of paint covers 1/3 of a wall then how much paint is needed for the entire wall

Mathematics

2 answers:

NeX [460]3 years ago

7 0

Answer:

2 1/4 gallons

Step-by-step explanation:

If 3/4 covers 1/3 of the wall, you need to multiply 3/4 by 3, which gives you 9/4, or 2 1/4 gallons

Hope this helps

ludmilkaskok [199]3 years ago

4 0

Hey!

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If 3/4 gallon of paint covers 1/3 of the wall then you just need to multiply.

3/4 * 3/1 = 9/4 = 2 1/4

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Hence, you would need $\Large\boxed{\mathsf{2~1/4}}$ gallons of paint!

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Hope This Helped! Good Luck!

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Answer:

Yumiko should multiply the other equation by 3.

If she adds the two equations she would be left with the variable 'x'.

Step-by-step explanation:

Given the two equations are as follows:

$2x - 3y = 12 \hspace{5mm} \hdots (1)$

$5x + 6y = 18 \hspace{5mm} \hdots (2)$

It is given that she multiplies the first equation by 6. Therefore, (1) becomes

$12x - 18y = 72 \hspace{15mm} \hdots (a)$

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The co-effecient of y in Equation (2) is 6. To make it 18 like it is in Equation (1), we multiply throughout by 3.

Therefore, Equation (2) becomes:

$15x + 18y = 54 \hspace{5mm} \hdots (b)$