841 jumping jacks per 4 minutes

Divide both sides by 4.

Delilah can do 210.25 (or 210) jumping jacks per minute.
QS/AC=6/60=1/10
QR/AB=QR/50=1/10
QR=5
SO THAT TRIANGLE ABC IS EQUAL TO TRIANGLE QRS(2SIDES PROPORTIONAL.INC. ANGLE)
Answer:
x = 1
Step-by-step explanation:
8x + 4 = 12
8x = 8
x = 1
Answer:
D ; Yes because the Pythagorean theorem works
Step-by-step explanation:
The measure of all three sidelengths make a right triangle