Answer:
B
Step-by-step explanation:
Answer:
Bella can complete work alone in 120 minutes
Step-by-step explanation:
Ana and Bella together can complete the shoveling in 30 minutes.
They can do a part of work in 1 minute =
Ana can do work alone in 40 minutes
She can do part of work in 1 minute =
So, Bella can do a part of work in 1 minute =
=
Bella can do part of work in 1 minute
Bella can do whole work in minutes = 120
Hence Bella can complete work alone in 120 minutes
Answer:
r = -4
Step-by-step explanation:
2r + 7 = - 1
2r = - 1 - 7
2r = - 8
Answer:
The answer is the option A
Step-by-step explanation:
we know that
The measure of radians is equal to
so by proportion
Find the measure in radians of
Find the measure in radians of
therefore
In radian measure the angles are