Answer:
k = 10
Step-by-step explanation:
We first have to get the 3rd angle: 180 - 115 = 65
Sum of angles in a triangle = 180
65 + (4k + 5) + (6k + 10) = 180
Collect like terms
65 + 10k + 15 = 180
80 + 10k = 180
Subtract 80 from both sides
10k = 100
Divide both sides by 10
k = 10
Answer:
P = 3x + 7
Step-by-step explanation:
The perimeter (P) is the sum of the 3 sides of the triangle, that is
P = x + 5 + x + 4 + x - 2 ← collect like terms
= 3x + 7
Answer:
b
Step-by-step explanation:
If that's the side length, s, then cube 4x^2+3 to obtain the cube volume:
V(x) = (4x^2+3)^3 (answer)
