Step-by-step explanation: The easiest way to do this and the way I commonly use is to subtract 17 from 89then make it negative as you are making the negative number smaller by adding a smaller number therefore your answer is -72

6 0

3 years ago

Could use sum help please

Sever21 [200]

Answer:

I need help with the same thing-

Step-by-step explanation:

7 0

3 years ago

If a car averages 21.8 miles per gallon, how many miles will it travel on 16 gallons of gas?

asambeis [7]

Answer: 348.8 miles on 16 gallons of gas

Step-by-step explanation:

Make the following proportion:

$\frac{21.8 miles}{1 gallon}$ = $\frac{x miles}{16 gallons}$

Since the car consumes gas at the same rate and only the amount of gas is changed, these two fractions must be equivalent. If the rate at which the car consumes gas changes, it would be different.

Use basic algebraic skills and you should get 348.8 miles.

7 0

2 years ago

Guadalupe can do a job in 15 hours. If she works with lan, together they can get the job done in 10 hours. How long would it tak

krok68 [10]

Answer:

30 hours

Step-by-step explanation:

The equation we use is 1/15 + 1/x = 1/10. X being the amount of time it takes Ian alone. X works out to 30 hours which is the answer

7 0

2 years ago