Answer:
37 just did it on my test and got it right
The answer is 90.
28/2.8 = 10
10 x 9 = 90
$12.75-$11.25= $1.50, $9.75-$1.50= $8.25 his little brother should get $8.25 hope it helps
2x - 3y = 7 and -3x + y = 7..multiply Equation 2 by THREE and add to Equation 1
-9x + 3y = 21...........................watch the y's disappear
-7x........ = 28
x = -4
substitute -4 instead of x in either of the ORIGINAL equations
2x - 3y = 7
2(-4) - 3y = 7
-8 -3y = 7..........add 8 to both sides
-3y = 15
y = -5
im not sure
Answer:38
Step-by-step explanation:
if there were 253 children and 6 buses and f 25 children had to go by car then,
253-25=228
228/6=38
