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:)
Answer:
3/20
Step-by-step explanation:
She chose 3 songs out of twenty so those three songs should be out of that twenty.
Answer: 
Step-by-step explanation:
Given: The side of the square shaped traffic sign = 4x+3
We know that the area of square is given by:-
Therefore, the area of the side of the square shaped field is given by:-
We know that , 
Therefore,
Hence,
Answer:
12.5 s
Step-by-step explanation:
If acceleration is constant, speed is proportional to time. To increase the speed by 50 km/h, the car will need an additional time given by ...
t/(50 km/h) = (20 s)/(80 km/h)
t = (20 s)(50/80) . . . . . multiply by 50 km/h
t = 12.5 s
It will take 12.5 more seconds for it to reach a speed of 130 km/h.
The cost of the roll = 125 * 45 = 5625 cents
5625 / 100 = 56.25 $
