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9966 [12]
2 years ago
15

Ariel writes this equation for the sum of the ages:

Mathematics
1 answer:
IgorC [24]2 years ago
6 0

Answer:

x=13

Step-by-step explanation:

x+x+3+x-2+3(x+3)-1=87

x+x+3+x-2+33x+9-1=87

6x+3-2+9-1=87

6x+9=87

6x=87-9

6x=78

x=13

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2 years ago
the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect
Leni [432]

Answer:

Step-by-step explanation:

let : x the length and y the width    .... ( x  > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

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4 0
3 years ago
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(7,-23)

Explanation:

4 0
2 years ago
2(1/2q+1)=-3(2q-1)+4(29+1)
FrozenT [24]
Q+2=-6q+3+120
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4 0
3 years ago
HELP HELP!! WILL MARK BRAINILEST!!
aliina [53]

Answer:

A

Step-by-step explanation:

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