3 years ago

Evaluate the expression below at x= 4.

Mathematics

1 answer:

Gre4nikov [31]3 years ago

7 0

Suggestion:

Try to explain this more clearly.

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Because it will help others so they understand what your question is.

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Simplify the square root of 7+2<br> So 7+2 is inside the quare root

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Answer:

Step-by-step explanation:

$\sqrt{7+2}=\sqrt{9}=\sqrt{3^2}=\boxed{3}$

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<h3>Answer: Choice A $R_0, 90^{\circ}$ </h3>

The R stands for "rotation". The "O" as a small subscript means "origin" which is where the x and y axis cross. The 90 degrees means we rotate 90 degrees counterclockwise. This is equivalent to 270 degrees clockwise, but writing $R_0, 270^{\circ}$ is not correct as we don't rotate 270 degrees counterclockwise.