Answer:
Its 8
Step-by-step explanation:
3x+10+2x=50
3x+2x=5x
5x+10=50
5x+10-10=50-10
5x=40
x=8
5x8=40
A) False
B) False
C) True
<em>( I'm not too sure though, compare my answer with yours and make a decision... sorry I couldn't be more help...) </em>
<span>x : y is equal to 12 : 8. These can be reduced or cancelled down to 3 : 2 in the same proportions. Therefore, when y is 12, you have to multiply the smallest value y can be by 6, and must do the same to the smallest x value to retain the proportions. x = 18 when y = 12.</span>
The equation is b-a= 21;
2b-5a = 18
a=8 and b= 29
therefore 29-8= 21
2 (29) -5 (8) = 18
58-40=18
Sorry could you explain what you mean
