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goblinko [34]
3 years ago
15

A section of a rectangle is shaded.

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0

Answer:

x=11

Step-by-step explanation:

Area of trapezoid:

\frac{(a + b)h}{2}

a=7

b=x

h=7

Area=63

63 =  \frac{7(7 + x)}{2}  \\   \frac{126}{7}  = 7 + x \\ x = 11

Brainliest please~

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