Answer:
5.92 min
Step-by-step explanation:
1/11 = person A's rate
1/21 = person B's rate
1/33 = person C's rate
Let t = time working to gether
rt = am't of work done
(1/11)t = work done by person A
(1/21)t = work done by person B
(1/33)t = work done by person C
(1/11)t + (1/21)t + (1/33)t = 1
231((1/11)t + 231(1/21)t + 231(1/33)t = 231
21t + 11t + 7t = 231
39t = 231
t = 5.92 min
I did that in super detail for you. Note: If n = the time to do a job alone, then 1/n = the rate of speed in doing the job. And, the rate times the time on the job = am't of work done.
Answer:
C. Never
Step-by-step explanation:
The legs of a right triangle are never longer than the hypotenuse. Otherwise, the legs would never connect to the hypotenuse.
Answer:
parallelogram
Step-by-step explanation:
Looks like a rectangle, but then angles should be marked =90
But two sides are marked equal that makes it a parallelogram.
(a parallelogram is 4 sided figure where 2 opposite sides are =
P = 2L + 2W; for L
P - 2W = 2L
P - 2W/2 = L
P/2 - W = L
Answer: $310,000
Step-by-step explanation:
In 40 additional years, the amount she made less than her college counterparts was;
= 10,000 * 40
= $400,000
She however made $90,000 more than them as they went to college;
= 400,000 - 90,000
= $310,000
The long-term financial cost was $310,000.
