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mafiozo [28]
2 years ago
5

In

Mathematics
1 answer:
o-na [289]2 years ago
3 0
Answer
D
Hope this help you?
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If the difference between a number and 21 is divided by2, the result is 4 times the number. What is the number
Ostrovityanka [42]
(n-21)/2=4n is the equation

First, divide what is in the parentheses by 2
0.5n-10.5=4n

Then, multiply the whole equation by 2 so we have all whole numbers
n-21=8n

Move N so that it is with 8n
7n=-21

Divide 21 by 7
n=-3

Solution: The number (n) is equal to -3
6 0
3 years ago
Sam has 30 baseball cards. 12 of the cards are from League A. What is the ratio of League A cards to the total number of cards?
natulia [17]

Answer:

Not simplified: 12:30

Simplified: 1:5

Step-by-step explanation:

We have 12 League A cards and 30 total.

So, 12:30.

But we can divide by 6 and reduce it to its simplest form:

1:5

7 0
2 years ago
YESSSSS! WERE NOT OVER JUST YET I DONT UNDERSTAND THIS MUCH XD PLZ HELP I WILL MARK BRAINLIEST
WARRIOR [948]

Answer:

D) The expression equals 0

Step-by-step explanation:

-8 + 8 = 0

the negative and positive cancel eachother out

5 0
2 years ago
Read 2 more answers
Pls help!!! thank you in advance​
Oliga [24]

answer simple

i thinks its b

5 0
3 years ago
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The functions r and s are defined as follows.
irina1246 [14]

Answer:

r(s(-2)) = -2

Step-by-step explanation:

We are given these following functions:

r(x) = -2x + 2

s(x) = x^2 - 2

Find the value of r(s (-2)).

First we find the composition of r and s functions. It is:

r(s(x)) = r(x^2-2) = -2(x^2-2) + 2 = -2x^2 + 6

At x = -2

r(s(-2)) = -2(-2)^2 + 6 = -8 + 6 = -2

r(s(-2)) = -2

8 0
3 years ago
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