What is the solution of the equation (4x + 3)2 = 18?

Mathematics

1 answer:

saveliy_v [14]3 years ago

5 0

Hello!

First of all, let's undo the parentheses.

8x+6=18

Now we subtract 6 from both sides.

8x=12

Finally, we divide both sides by 8.

x=1.5

I hope this helps!

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omeli [17]

<h3>Answer: Choice B</h3>

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Cosine is positive in quadrants I and IV, but quadrant IV isn't shaded in so we can rule out choice A.

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Choice D is ruled out for similar reasoning as choice A. Recall that $\sec(x) = \frac{1}{\cos(x)}$