hi, i’m not good at this...at all so if you could please add in an explanation so i can understand better would be great!

1. x=74

2. x=86

Step-by-step explanation:

1. the sum of interior angles in a triangle is 180 degrees

81 + 25 + x = 180

106 + x = 180

x = 74

2. once again the sum of interior angles in a triangle is 180 degrees so add up the terms and set them equal to 180

x + x-35 + 43 = 180

add up like terms (x and x, -35 and 43)

2x +8 = 180

2x = 172

x = 86

step-by-step explanation:

0

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)