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weqwewe [10]
3 years ago
14

PLEASE HELP!a-b+c=3a+b+c=7Find b.A) 1B) 2C) 3D) 4E) 5​

Mathematics
2 answers:
bija089 [108]3 years ago
3 0

Answer:

b

Step-by-step explanation:

I think the day of my birthday was a little more aware of my own life than the poem I think I c I

Gre4nikov [31]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Given the 2 equations

a - b + c = 3 → (1)

a + b + c = 7 → (2)

Subtract (1) from (2) term by term to eliminate a and c

a - a + b - (- b) + c - c = 7 - 3 , that is

0 + b + b + 0 = 4

2b = 4 ( divide both sides by 2 )

b = 2 → B

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Step-by-step explanation:

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The area of a trapezoid with height z is 20 sq .cm. The length s of the parallel sides are (2z+3) and (6z-1) cm. Find the height
const2013 [10]

Answer:

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Step-by-step explanation:

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3 years ago
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natulia [17]

Answer:

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Step-by-step explanation:

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