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Gala2k [10]
3 years ago
13

What is the value of x A 19 B 22 C 67 D71

Mathematics
1 answer:
Novay_Z [31]3 years ago
4 0

Answer:

Step-by-step explanation:

(2x+4)° + 42° = 180°

x = 67°

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A man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream. Fin
pochemuha

The speed of the current is 40.34 mph approximately.

<u>SOLUTION: </u>

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\begin{array}{l}{\rightarrow 40(a+11)=70(a-11)} \\\\ {\rightarrow 40 a+440=70 a-770} \\\\ {\rightarrow 70 a-40 a=770+440} \\\\ {\rightarrow 30 a=1210} \\\\ {\rightarrow a=40.33}\end{array}

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Step-by-step explanation:

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