Answer:
The answer is A
Step-by-step explanation:
A and b are the minutes spent on machine A and machine B, respectively.
a+b = 40
b = 40-a
8a + 6b = 300
8a + 6(40-a) = 300
8a + 240 - 6a = 300
2a = 60
a = 30
b = 40-a = 10
30 minutes on machine A and 10 minutes on machine B
Answer:
3
.75
the solved version would be .421875
the numbers on top are translated in English to .75 to the power of 3.
Step-by-step explanation:
I'm pretty sure this is correct
Answer:4.8 +0.5 x
Step-by-step explanation:
Based on the problem Carl will complete...
1/6 of the job per minute.
Fred will complete 1/8 of the job per minute.
Together they will complete... 1/6+1/8 of the job per minute.
That would be 7/24.
How long will that take?
1/(7/24)=24/7=3 3/7
It will take 3 and 3/7 minutes to finish washing the car.
