180-90=3x
90=3x
X=30
90+x+y=180
90+30+y=180
120+y=180
Y=60
Answer:
Step-by-step explanation:
To find the X value of the solution, you would set the two equations equal to each other bu substitution:
if <span>y = -2x + 5 and y = 3x - 2,
</span>-2x + 5 must be equal to 3x - 2
solve for x... you should get 7/5
then, plug that into one of the original equations as X and you would get the Y value, 11/5
This point, (7/5,11/5) is where the two lines cross
5 and 1/4 times 3. 1/4 is equal to .25. So, 5.25 x 3 is...
15.75
