The answer would be D.
you would start by choosing one of the variables to eliminate, i chose to eliminate X first. in order to eliminate X, i had to multiply the second equation by -2. X then cancelled out, and i solved for the Y the same way you would a 1 step equation. Y=-4
I then took the first original equations, plugged Y in, and solved for X. X=3.
Hope this helps!
Answer:
3.75 or 15/4
Step-by-step explanation:
8x+5=35
Subtract 5 from the left side to cancel it out, do the same thing to 35.
8x=30
Divide 8x by 8 to get x alone, do the same thing to 30.
x=3.75, or once you simplify 30/8, you get 15/4.
Answer:
x = 9/8
Step-by-step explanation:
The triangles are similar so we can use ratios to solve
AB BC
---- = -----------
AD ED
x 1
---- = -----------
x+9 9
Using cross products
9*x = 1(x+9)
9x = x+9
Subtract x from each side
9x-x = x+9-x
8x = 9
Divide by 8
8x/8 = 9/8
x = 9/8
Answer:
We know that angle 2 is 63. We also know that 2 and 3 are vertical pairs.
Therefor, they are congruent with one another.
Angle 3 is 63.
