Given:
4/5 of a pie left after their family picnic.
Each slice of pie was 1/15 of the total pie.
To find:
The number of remaining slices of pie.
Solution:
Let x be the number of remaining slices of pie.
Part of total pie in one slice = 
Remaining part of total pie in x slices = 
According to the question, 4/5 of a pie left after their family picnic.

Using cross multiplication, we get


Divide both sides by 5.

Therefore, the remaining number of slices of pie is 12.
Answer:
ask brainly. someone on there always knows.
Step-by-step explanation:
To solve this divition we can write it like:

So now we can multiplicate the numerator of the first fraction with the denominatior of the second fraction, and put the resould in the numerator of the quationt, ans the same operation for the numeratior with the numerator of the secon fraction and the denominator of the first fraction so:
Area of a triangle = 1/2 x base x height
Area = 1/2 x 8.7 x 8.6
Area = 37.41 square feet