Answer:
a) x = 10 + -1.5y
b) y+15
Step-by-step explanation:
a)2x+3y=10*√4
2x+3y=20
2x + 3y + -3y = 20 + -3y
2x + 0 = 20 + -3y
2x = 20 + -3y
x ÷ 2 = (20 + -3y) ÷2
x = 10 + -1.5y
b)x+2y+5*3=x+y
x+2y+15=x+y
x+2y+15 - y=x+y - y
x+y+15 =x
x+y+15 - x =x - x
y+15
Answer:
<em>-5</em>
Step-by-step explanation:
-31=9+8x
we need to isolate the variable by moving 8x to the left side and -31 to the right side....therefore 8x becomes a negative, -8x, and -31 a positive....so now it would look like...
-8x=9+31
then we work the right side out...
-8x=40
to get x we need to divide -8x by 8 so we do the same to the right side as well....
-8x=40
÷8 ÷8
so...
<em>x=-5</em>
hope this helped you- have a good day bro cya)
Answer:
b)Add the equations to eliminate x.
Step-by-step explanation:
y= x+20
y= - x+2
Result of the addition: (-x cancels x)
2y = 22
y =11
11=x +20 -9 = x
11=9+2
11 = -9 +20
The answer is = 2xy + 2x + 2y
Answer:
you would save $41.99
Step-by-step explanation:
(139.99)(.3)=41.99
this should be right, have a good day.
