Answer:
Step-by-step explanation:
a.18/-3 = (-6)
b. -5/-1 = 5
c. 24/-6 = (-4)
d. -10/-1 = 10
e. -25/5 =(-5)
f. 8/-2 = (-4)
In multiplication and division, if there are are odd number of negative signs, the result will have negative sign.
If there are even number of negative signs, the the result will have positive sign
To solve this problem we will start by calculating time needed for each of them to fill the pool.
We have formula:
Volume = rate * time
Or
time = volume / rate
Wilma:
time = 9900 / 900
time = 11h
Betty:
time = 9900 / 500
time = 19.8h
Now we substract these two numbers:
time_difference = 19.8 - 11 = 8.8h
Betty needs 8.8 hours more than Wilma to fill the pool.
The answer would be 237.375. To get this answer, you will first use the formula given for each unit. First, you will do the first unit by putting 8 to the third power, or basically 8x8x8. After you get the product 512, you will then do the next unit. Do that one by doing 6.5 to the third power, or as followed, 6.5x6.5x6.5. Once you get the product 274.625, you will then subtract that from 512. You will then receive the answer 237.375.