Answer:an isosceles triangle with PQ=QR (option C)
Step-by-step explanation:
Simple...
you have:

and

To solve for....

Multiply to remove the denominator-->>

n=12*3
n=36
Then-->>>

Do the same thing-->>

n=-12*3
n=-36
Thus, your answer.
2x + 40
Divide both sides by 2
You get x + 20
A, B, C, D, E, F, G, H, I, J
The sample space for an experiment is the set of all possible outcomes for the experiment. This is experiment is a single step experiment, meaning that only one ball will be drawn from the bag. Since this is the case, all possible outcomes involve pulling any letter labeled A - J. No letter appears more than once in the bag, so there is only a 1 in 10 chance of drawing each letter.