y=7 i got this answer cause i realized that 12 is only 3 numbers away from 9 so i added 3 to 4 and 3+4=7
hope it helps
Answer: option B is the correct answer.
Step-by-step explanation:
Susan drove at an average speed of 30 miles per hour for the first 30 miles of a trip.
Time = distance/speed
This means that time spent by Susan in travelling the first 30 miles would be
Time = 30/30 = 1 hour
He travelled at an average speed of 60 miles per hour for the remaining 30 miles of the trip.
Time = 30/60 = 0.5 hours
Total distance travelled is 30 + 30 = 60 miles.
Total time spent = 1 + 0.5 = 1.5 hours
Speed = distance/time
Average speed = 60/1.5 = 40 miles per hour.
Your answer will be 1100% I even checked and it is right
Answer
4800 ft3
Step-by-step explanation:
Formula for volume of a pyramid is 1/3*base*hight
because you do 20*20=400ft2 for the base
Then you times 36 (the hight) by 1/3 and get 12
Then you do 400*12=4800ft3 theres your answer
hope this helps
Let the numbers be x and y
x+y=68
x-y=28
add
2x =96
x=48
y=68-48=20