Answer:
x = 15
Step-by-step explanation:
f(x) = 4x² + 7x
= 4(-3)² + 7(-3)
= 36 + (-21)
= 15
a²+b² = c² where a and b are legs and c is the hypotenuse
So...
a²+4²=13²
a²+16=169
a²=153
a=√153
answer: approx. 12.37 units
160/4=40 so each side is 40. Divide the perimeter by how many sides you have.
Answer:
∠6=58°
Step-by-step explanation:
∠3=∠6=58°