3 years ago

18 to 29=10%

1 answer:

3 0

45 people is 10% of 450.
So how many people is 30% of 450.

1. Multiply (45)(3) = 135. Because 30% is 3 times 10%.
2. Multiply (450)(.3) = 135. Because .3 = 30% in decimal form.

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Which algebraic expression represents the word expression "three times the square of a number, n, subtracted from 54"?

sveta [45]

Answer:

54 - 3n²

Step-by-step explanation:

Square of a number n = n²

Three times the square of n = 3*n² = 3n²

Expression:

54 - 3n²

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3 years ago

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3 years ago

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My name is Ann [436]

Answer:

$v = \dfrac{8}{a(y - 7)}$

Step-by-step explanation:

$y = \dfrac{8}{av} + 7$

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3 years ago

The ratio of girls to boys who participated in the quiz bowl was 7:5. There were 42 girls in the competition. How many boys part

Zinaida [17]

The way i do it, is sort of like this :

Is 7 a factor of 42?
Is 5 a factor of 42?

7 is a factor of 42.
It must be in multiples of 7!

Therefore, we have 5 on the other side, which makes it 5 x 7 = 35

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3 years ago