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ozzi
3 years ago
12

A mirror with a reflecting surface that caves inward is said to be

Mathematics
1 answer:
Marysya12 [62]3 years ago
5 0
C. CONCAVE

A mirror with a reflecting surface that caves inward is said to be CONCAVE.

Clue: caves inward. )(

Convex has an outline of surface that cave outward. It is like the outside of the circle or sphere. ()
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NO LINKS!! Use the method of substitution to solve the system. (If there's no solution, enter no solution). Part 11z​
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Answer:

(x,y)=\left(\; \boxed{-1,-8} \; \right)\quad \textsf{(smaller $x$-value)}

(x,y)=\left(\; \boxed{5,16} \; \right)\quad \textsf{(larger $x$-value)}

Step-by-step explanation:

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\begin{aligned}x^2-9&=4x-4\\x^2-4x-9&=-4\\x^2-4x-5&=0\end{aligned}

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Apply the <u>zero-product property</u> and solve for x:

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Substitute the found values of x into the <u>second equation</u> and solve for y:

\begin{aligned}x=-1 \implies y&=4(-1)-4\\y&=-4-4\\y&=-8\end{aligned}

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Therefore, the solutions are:

(x,y)=\left(\; \boxed{-1,-8} \; \right)\quad \textsf{(smaller $x$-value)}

(x,y)=\left(\; \boxed{5,16} \; \right)\quad \textsf{(larger $x$-value)}

6 0
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