<h2>Time taken by Helga to wax the car is 72 minutes</h2>
Step-by-step explanation:
Let w be the work of waxing.
Rosita can wax her car in 2 hours or 120 minutes.
Time taken by Rosita = 120 minutes

Let time taken by Helga be t,

When she works together with Helga, they can wax the car in 45 minutes.
We have

Time taken by Helga to wax the car is 72 minutes
0 = -5n - 2n
0 = -7n <em>|divide both sides by (-7)</em>
<u>n = 0</u>
Answer:
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Answer:
q=24
Step-by-step explanation:
2+-6=-4
20+4=24
The 24 is the sum of the 20 and to turn the negative into 0 plus the 20 equals 24
Answer:
22.5 cm
Step-by-step explanation:
P = 2( L + W)
P = 2( 7.5 + 3.75)
P = 2( 11.25)
P = 22.5 cm