We can check this by seeing if Pythagorean's theorem applies. The longest side is the hypotenuse, so let's see if this is true:
This is, indeed correct, thus, this
<em>is </em><em>
a right triangle.</em>
Answer:
Step-by-step explanation:
Since vertical angles are congruent, (4x+7)=5(x-4). So simplifying we get 4x+7=5x-20. If we add 20 on both sides we get 4x+27=5x. Now when we subtract x from both sides, we get x=27
SA=4pir^2
d/2=r
8/2=4
r=4
SA=4pi4^2
SA=4pi16
SA=64pi in^2
if want, aprox pi=3.14
SA=200.96 in^2
f(x) = -3x - 5, g(x) = 4x - 2
(f - g)(x) = f(x) - g(x) = (-3x - 5) - (4x - 2) = -3x - 5 - 4x + 2 = (-3x - 4x) + (-5 + 2)
(f - g)(x) = -7x - 3
