Multiply -1 by -7
-9x^3 + 8x^2 - 7x/6 + 7
Nico because 1 cm equals 10 mm, so Jake’s thumb is only 5.5 cm.
Answer:
the answer is 26
Step-by-step explanation:
add up all sides
The perimeter of a triangle is the sum of its side lengths.
The perimeter of the triangle is: 
<u>The sides of the triangle are:</u>
Side 1 = (8d - 3) cm
Side 2 = (6d + 2) cm
Side 3 = (7f + 8) cm
The perimeter (P) is calculated as:
P = Side 1 + Side 2 + Side 3
So, we have:

Remove brackets

Collect like terms


Hence, the perimeter of the triangle is: 
Read more about perimeters at:
brainly.com/question/6465134