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marusya05 [52]
2 years ago
5

Please answer this..

Mathematics
1 answer:
Ksju [112]2 years ago
4 0

Answer:

1 or 2

Step-by-step explanation:

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15.
saveliy_v [14]
D 85try telling me what like operation it would be so be easier to figure out
3 0
3 years ago
Michelle is 7 years older than her sister Joan, and Joan is 3 years younger than their brother Ryan. If the sum of their ages is
Zielflug [23.3K]

Answer:

(C) 18

Step-by-step explanation:

We can create a systems of equations. Assuming m is Michelle's age, j is Joan's age, and r is Ryan's age, the equations are:

m = j + 7

j = r-3

m+j+r = 64

We can use substitution, since we know the "values" of m and j.

(j+7)+(r-3)+r = 64\\(j+7)+(2r-3)=64\\2r + j + 4 = 64\\2r + j = 60\\\\

r = 21, j = 18

So we know that Joan is 18 years old.

Hope this helped!

8 0
3 years ago
Please help thnk you.
Levart [38]
Hello!

You have to find what they multiplied to 18 to get 27

27 / 18 = 1.5

The multiplied the sides by 1.5 to get the second shape

6 * 1.5 = 9

The answer is C)9

Hope this helps!
7 0
3 years ago
Read 2 more answers
45% of 40 is 18% of what number?
alexandr1967 [171]
So 45% OF 40 is 
45% * 40 
0.45 * 40
that is 18

18 is 18% of what number?
18 = 18% * x
18 = 0.18 * x
divide both sides by 0.18
100 = x
45 % of 40, which is 18, and is 18% of 100.

Hope this helps
3 0
3 years ago
Read 2 more answers
Multiply and simplify: (2b2+2b)2
sveta [45]

Answer:

4b^2+2b (b^2 means b squared)

Step-by-step explanation:

4 0
3 years ago
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