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Marysya12 [62]
3 years ago
9

What inputs of this function have an output of -2?

Mathematics
1 answer:
Jobisdone [24]3 years ago
8 0

Answer:

-7 and 5

Step-by-step explanation:

The output of a function is seen as the y-value so when you find the y-value of -2 they are on the x-values (or inputs) -7 and 5

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7 0
3 years ago
Help please! show work
e-lub [12.9K]
Your answers are
A = 35.7°
B = 67.6°
C = 76.7°

cosine law

a^2 = b^2 + c^2 -2bc \cos A \\&#10;-2bc \cos A = a^2 - b^2 - c^2 \\ \\&#10;\cos A = \dfrac{a^2 - b^2 - c^2}{-2bc} \\ \\&#10;A = \cos^{-1}\left[ \dfrac{a^2 - b^2 - c^2}{-2bc} \right] \\ \\&#10;A = \cos^{-1}\left[ \dfrac{12^2 - 19^2 - 20^2}{-2(19)(20)} \right]  \\ \\&#10;A = 35.723697

A = 35.723697
sine law for the rest of the angles

\displaystyle&#10;\frac{\sin B}{b} = \frac{\sin A}{a} \\ \\&#10;\sin B = \frac{b \sin A}{a} \\ \\&#10;B = \sin^{-1} \left[ \frac{b \sin A}{a}  \right] \\ \\&#10;B = \sin^{-1} \left[ \frac{19 \sin 35.723697 }{12}  \right]  \\ \\&#10;B \approx 67.58886795

B = 67.58886795
All angles in triangle sum to 180 so find C with that

A + B + C = 180
C = 180 - A - B
C = 180 - 35.723697 - 67.58886795
C = 76.7°

7 0
3 years ago
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