4 years ago

What is the solution to 3.2x = 6.4?

1 answer:

6 0

A. X = 2
what you do is divide each side by the coefficient of x (3.2) to get rid of it on the left, and simplify the right: 2.

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$\therefore (4a+7)\degree + (7a-3)\degree = 180\degree\\\\\therefore (4a+7+7a - 3)\degree = 180\degree\\\\\therefore (11a+4)\degree = 180\degree\\\\\therefore 11a+4 = 180\\\\\therefore 11a= 180-4\\\\\therefore a= \frac{176}{11}\\\\\therefore a= 16\\\\\because m\angle C = (4a+7)\degree\\\\\therefore m\angle C = (4\times 16+7)\degree\\\\\therefore m\angle C = (64+7)\degree\\\\\huge \orange {\boxed {\therefore m\angle C = 71\degree}} \\\\$

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