Answer:
well..the only equation is thats wrote right is(D)
Step-by-step explanation:
i wasnt sure if that was the correct answer and the way to know is by using i personally think which is desmos graphing calculator you can type in your equation and it graphs the line for you
after solving 
we get 
Step-by-step explanation:
We need to find the value of x in:
Solving:
So, after solving we get
Keywords: Solving the expression
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150 and the unknown angle next to it equal 180.
180 - 150= unknown angle
30 degrees= unknown angle
Then the triangle also equals 180 so we add the angles and solve for x
3x + 2x + 30= 180
5x + 30= 180
5x= 150
x= 30
3x= 3(30)= 90 degrees
2x= 2(30)= 60 degrees
Answer: 29
Step-by-step explanation:
d = √(l2 + w2 + h2)
d = √(12^2+ 16^2+ 21^2) = 29
(x - 4)²
(x - 4)(x - 4)
x² - 4x - 4x + 16
x² - 8x +16
