Answer:
The answer should be 3
Step-by-step explanation:
Answer:
11.1
Step-by-step explanation:
Use the Pythagorean theorem to find the unknown side.

Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h
thus given that
time=distance/speed
the average time will be:
3=(12+18)/(x+x+4)
3=30/(2x+4)
solving for x we get
3(2x+4)=30
6x+6=30
6x=24
x=4 mi/hr
Answer: 12 mi/hr
Step-by-step explanation:
C= 72..............
C3=216
C=216
3
C = 72
Thanks
Answer:
=(2x-3y+4z)+(9x-8y+7z)
=2x+9x-3y-8y+4z+7z
=11x-11y+11z
hope like the answer
please mark the answer as brainliest