Answer:
r = 8
Step-by-step explanation:
<u>→Distribute the 7 to (-3r + 16):</u>
-16r + 15 + 17 = 7(-3r + 16) - 5r
-16r + 15 + 17 = -21r + 112 - 5r
<u>→Add like terms:</u>
-16r + 32 = -26r + 112
<u>→Add 26r to both sides:</u>
10r + 32 = 112
<u>→Subtract 32 from both sides:</u>
10r = 80
<u>→Divide both sides by 10:</u>
r = 8
Answer:
lateral surface area of the triangular prism = 128 cm²
Step-by-step explanation:
The question is incomplete the picture below represents the complete question.
Lateral surface area of a triangular prism = PH
where
p = perimeter of the triangle
H = height of the prism
perimeter = 5 + 5 + 6 = 16 cm
height of the prism = 8 cm
Lateral surface area of a triangular prism = Perimeter of the triangle × height of the prism
lateral surface area of the triangular prism = 16 × 8
lateral surface area of the triangular prism = 128 cm²
First some rewriting:

We see that the numerators of both fractions
and a term in the denominators
will cancel:

Then

Answer:
35 more pieces
Step-by-step explanation:
888 - 853 = 35
<em>Hope that helps! :) <3</em>