Translation?
Let x be the number.
x+4-(-8)
Solve?
x+12
Dear Roni33, the amount of slices that Darren will put on each plate will be 3 parts of the pie.
The perimeter of the triangle described in statement has a measure of 56 units long.
<h3>How to determine the perimeter of a triangle</h3>
After a quick though careful reading, we construct a triangle based on all information given in the statement, based on the fact that the <em>longest</em> segment is adjacent to the <em>longest missing</em> side. Since both sides have two angles with the <em>same</em> magnitude, then we have the following ratios:
(1)
Now we solve the expression for <em>x</em>:
<em>9 · x = 7 · x + 35</em>
<em>2 · x = 35</em>
<em>x = 17.5</em>
<em />
And the perimeter of the triangle is determine by summing the three sides:
<em>p = 9 + 7 + (17.5) + (17.5 + 5)</em>
<em>p = 56</em>
The perimeter of the triangle described in statement has a measure of 56 units long. 
To learn more on triangles, we kindly invite to check this verified question: brainly.com/question/2773823
3.75, 3.9, 4.256, 4.258, 4.5