:)
x+x+55+x+38=180
3x+93=180
3x=87
x=29°
Answer:
<h3>∠L = 33.9°</h3><h3 />
Step-by-step explanation:
∠K = 180 - 67.8
= 112.2°
∠J = ∠L =<u> 180 - 112.2</u>
2
∠J = ∠L = 33.9°
Answer:
f(x) = -4/3x² -2/3x +10
Step-by-step explanation:
The quadratic regression function of a graphing calculator or spreadsheet can determine the equation for you.
___
Or, you can determine it yourself.
The equation can be written in the form ...
f(x) = a(x +3)(x -5/2) . . . . . . . using the given x-intercepts
for some value of "a"
For x = 0, this must match the y-intercept.
f(0) = a(0 +3)(0 -5/2) = 10
-15/2·a = 10
a = -20/15 = -4/3
So, the function can be written as ...
f(x) = (-4/3)(x +3)(x -5/2)
or
f(x) = -4/3x² -2/3x +10
Step 1:
x² + 4x = 192
Step 2:
Take x common:
x ( x + 4) = 192
Length is x and width is x+4
Step 3:
x² + 4x - 192 = 0
Step 4:
x² + 16x - 12x - 192 = 0
x(x+16) - 12(x+16) = 0
(x-12)(x+16) = 0
⇒ x=12, x=-16
Because the length can't be -16, the length is 12.
Answer:
A
Step-by-step explanation:
Solving for y in the second equation is the best way because it will leave you with a direct equation of y = _______
This will allow for you to solve with substitution.