Well a right triangle is made up of a 180 degree angle and take away 90 degrees because the right angle is already there so the answer is that PQR is a right triangle since the other two angles = 90 when added hope this helps i did alot of research:)
Stevic's total earnings after delivering 15 papers on Sunday is $180.
Stevic's total earnings after delivering 15 papers on Saturday is $60.
<h3>What is the total earning?</h3>
Multiplication is the mathematical operation that is used to determine the product of two or more numbers. In order to determine the total earnings, multiply earning per newspaper delivered by total earnings.
Total earnings on Sunday= $12 x 15 = $180
Total earnings on Saturday = 4 x 15 = $60
To learn more about multiplication, please check: brainly.com/question/13814687
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It's not clear to me what the given interval is supposed to be, so I'll use a generic one, [a, b] with a < b.
The average acceleration of the particle over this interval is given by the average rate of change of v(t),

Answer:
b= -48
Step-by-step explanation:
by transposing,
43=59+b/3
b/3+59=43
b/3=43-59
b/3= -16
b= -16×3
b= -48
therefore the answer is b= -48
hope it helps!!!
PLEASE MARK BRAINLIEST..