Working alone, it would take shandra 45 minutes to mow the lawn. to mow the same lawn, also working alone, it would take kelly 1 hour and 15 minutes. if they work together, the girls believe it will take them 1 hour to mow the lawn.
which best describes the reasonableness of their solution?

While working together, they will complete the work in 28.125 minutes

Step-by-step explanation:

Working alone, it would take Shandra 45 minutes to mow the lawn.

Working alone, it would take Kelly 1 hour and 15 minutes. to mow the lawn. In minutes this becomes minutes.

So, when they are working together, they will complete 1 job.

Lets the time taken by both working together be t

Equation forms:

=>

=>

=>

t = 28.125 minutes

Hence, while working together, they will complete the work in 28.125 minutes which is very less than their estimation.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

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step-by-step explanation: