Answer:
19 sit-ups per minute ;
95 sit-ups
Step-by-step explanation:
Given that :
Number of sit-ups done in 3 minutes = 57
The unit rate of sit-ups done can be obtained thus :
Total Number of sit-ups done / total time taken
= 57 sit-ups /3 minutes
= 19 sit-ups per minute
. Number of sit-ups that can be done in 5 minutes :
Unit Rate of sit-ups * number of minutes
19 sit-ups / minute * 5 minutes
= 95 (sit-ups / minute * minute)
= 95 sit-ups
<h2>
Hello!</h2>
The answer is:
It will take 42.35 minutes to weed the garden together.
<h2>
Why?</h2>
To solve the problem, we need to use the given information about the rate for both Laura and her husband. We know that she can weed the garden in 1 hour and 20 minutes (80 minutes) and her husband can weed it in 1 hour and 30 minutes (90 minutes), so we need to combine both's work and calculate how much time it will take to weed the garden together.
So, calculating we have:
Laura's rate:

Husband's rate:

Now, writing the equation we have:








Hence, we have that it will take 42.35 minutes to weed the garden working together.
Have a nice day!
Answer:
-8m+24-32n
Step-by-step explanation:
To expand this, we have to multiply -8 into m, -3, and 4n. Expanding, we get
(-8)(m)+(-8)(-3)+(-8)(4n)
This simplifies to
-8m+24-32n, which is our answer.
Answer:
x = -75
Step-by-step explanation:
