Answer:
x=4.5 and y= -6
Step-by-step explanation:
2x+5y= -21
-2x+3y= -27
add the two equations: 8y= -48
y=-48/8= -6
sub for y in 2x+5y= -21
2x + 5(-6)=-21, 2x-30= -21
2x= -21+30= 9
x= 9/2=4.5
b is decreased by 25% which means there will be (-ve) sign.
Clara can feed 10 friend
I may be wrong, but I tried :P
3 tothe one it is the answer
12
The angle equals 90 degrees so (8*12-6) would equal 90
hopefully i helped
