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3 years ago

Please Help I’ve been stuck on these questions for a while now!

Mathematics

1 answer:

atroni [7]3 years ago

8 0

Answer:

written below for problem #2

Step-by-step explanation:

a. ratio is 12:40 since they're are 12 non fiction and 40 graphic novels

b. 40:12 (same reasoning as part a)

c. 6:40 for the ratio of science fiction to graphic novel, 12:6 for the ration of non fiction to science fiction, x:6 for the ratio of the unknown amount of fiction books to the science fiction books. (x is just there as a variable so it just represents fiction books)

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2900 dollars is placed in an account with an annual interest rate of 9% Wirte an equation that calculates how many dollars will

valentinak56 [21]

Answer:

The amount that will be in the account will be $(2900 +261x)

Step-by-step explanation:

We know that the amount of money that will be in the account will be a sum of the initial principal ($2900) and the interest that is accrued after x years.

Since we already know the principal, we will have to calculate the interest that is accrued after x years.

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3 years ago

In a small private school, 6 students are randomly selected from 17 available students. What is the probability that they are t

Sindrei [870]

Answer:

1/8910720

Step-by-step explanation:

Number of ways they can be chosen :

⇒ 17 × 16 × 15 × 14 × 13 × 12

⇒ 272 × 15 × 14 × 13 × 12

⇒ 4080 × 14 × 13 × 12

⇒ 57120 × 13 × 12

⇒ 742560 × 12

⇒ 8910720

Hence, the probability will be :

⇒ P = 1 / number of ways

⇒ P = 1/8910720

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2 years ago