2 years ago

F is directly proportional to A. if F=72 when A=9 find F when A=7

1 answer:

6 0

56 is your answer.

Equation for direct proportion is y = kx where k is the constant of proportionality. For your letters, it’s f = ka

We know 72 =k9, so k = 8
Then they want you to solve
f = 8•7
f = 56

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3 years ago

1.5c - 6 = 7.5 i need help with this problem and i have no one to help me

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c=9

Step-by-step explanation:

Let's solve your equation step by step:

add 6 on both sides
divide 1.5 from the product of 6 and 7.5 (aka 13.5)
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put 9 in for C.

1. $1.5c-6+6=7.5+6$

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2 years ago

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IrinaVladis [17]

Answer:

Step-by-step explanation:

<u>Given:</u>

There were 120 people in total.

60% were parents.

Number of parents attended.

Solution:

1. 60% of 120

It can also be written as:

$\frac{60}{100}\times \frac{120}{1}$

Simplify

Cancel zeros

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Divide by common factor (2)

$\frac{6\div2}{10\div2}=\frac{3}{5}$

2. $\bold{\frac{3}{5}\times \frac{120}{1}}$

Multiply

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Divide

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Read 2 more answers