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LekaFEV [45]
3 years ago
12

9. a - 2a +5 pls help i’m kinda dumb

Mathematics
2 answers:
IRISSAK [1]3 years ago
5 0
A-2a +5= -a + 5 would be the answer
alukav5142 [94]3 years ago
5 0
Answer: -a+5
First you combine like terms
a-2a equals -a
After that you can’t combine anything else
So the equation simplified is -a+5
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3 years ago
Please help me on this
Diano4ka-milaya [45]

Answer: Option A.

Step-by-step explanation:

The angle ∠QST and the angle ∠QSR are supplementary.

If two angles are supplementary, means that the sum of both angles is 180 degrees.

Thenrefore

QST+QSR=180\°

Solve for the angle ∠QSR and substitute the value of the angle ∠QST  to find the value of the angle ∠QSR. Then, solving the equation, you get:

QSR=180\°-QST\\QSR=180\°-150\°\\\\QSR=30\°

Then tan(QSR) is:

tan(30\°)=\frac{\sqrt{3}}{3}

This matches with the option A.

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