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postnew [5]
3 years ago
5

What is the value of x? Enter your answer in the box.

Mathematics
2 answers:
Maslowich3 years ago
5 0

Answer:

x=9

Step-by-step explanation:

\frac{9}{72}  =  \frac{3x - 20}{56}

Cross multiply

504 = 216x - 1440

Transfer and isolate

\frac{504 + 1440 = 216x}{216}

\frac{1944 = 216x}{216}

9 = x

dimulka [17.4K]3 years ago
3 0

Answer:

9 cm

Step-by-step explanation:

9/(9+72) = (3x-20)/(3x-20+56)

9/81 = (3x-20)/(3x+36)

1/9 = (3x-20)/(3x+36)

3x + 36 = 27x - 180

24x = 216

x = 9cm

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Answer:

ABD = CDB

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Step-by-step explanation:

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7 0
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Answer:

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4 years ago
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