What is the sum of (2x+4)+(-3x+9)
2 answers:
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Answer:
Step-by-step explanation:
We have been given that are two racks with 40 towels per rack. On Tuesday there were 30, on Wednesday 50 and on Thursday 25. We are asked to find the fraction on average that is in use for the three days.
First of all, we will find total number of towel by multiplying 40 by 2.
Now we will find average number of towels used on three days.
Now we need to calculate 35 is what part of 80 to find the fractional use of towels per day as:
Therefore, on average is in use for the three days.
I decided to do mental math and figured out it was -12. but you can cross multiply since both answers have to equal one another. you will still get the answer.
