Two fire hoses are used to extinguish a fire. hose a, when turned on alone, can extinguish the fire in 7 minutes, while hose b takes "n" minutes more time than hose a. find an expression (in terms of "n") for how much of the fire they will extinguish in 1 minute when both hoses are turned on together.

The expression in terms of "n" for how much of the fire they will extinguish in 1 minute when both hoses are turned on together is

Solution:

Given that,

Hose A, when turned on alone, can extinguish the fire in 7 minutes

Hose B takes "n" minutes more time than hose A

Hose takes (n + 7) minutes to extinguish the fire

STEP 1: Calculate how much work (here work is to extinguish the fire) each person does in one minute

STEP 2: Add up the amount of work done by each person in one minute

Work done in one minute when both are working together:

Therefore, the expression in terms of "n" for how much of the fire they will extinguish in 1 minute when both hoses are turned on together is:

the answer is c

hope this !

angle addition postulate

2x=56

step-by-step explanation: