X+8y=18
-5x+3y=-4
Multiply the first equation by 5
Add the two equations together
5x+40y=90
-5x+3y=-4
43y=86
Y=2
Plug y into one equation to find x
X+16=18
X=2
Answer:
28
Step-by-step explanation:
Triangle on the right id dilated with scale factor 2 ( the sides of the other triangle are double (17-34 8-16 15-30
Dilations preserve angle measurement
C=90 + B=62=152
All triangles sum up to 180
180-152=28
Angle A=28
Angle A is corresponding with angle D
So angle D is also 28
Factor the numerator using difference of cubes:
a = x
b = 2
Now you can evaluate limit as x=2.
Gradient= -3/2 Equation: Y=mx+c Y=2 , X=8
So you substitute the numbers in
2=(-3/2) x 2 + c (then you backtrack to solve for c which is the y intercept)
2=-3+c
5=c So the equation should be Y=-3/2x+5