Using elimination method. Using substitution will cause some fraction problems.
c- child tickets
a- adult tickets
4a + 7c = $83
5a + 6c = $90
multiply by -5
-20a - 35c = -$415
20a + 24c = $360
-11c= -$55
c = $5 child tickets
4a + 7(5)= $83
4a + 35 = $83
4a = $48
a= $12 adult tickets
Answer:
B) -7
Step-by-step explanation:
x+y
8+(-15)=8-15=-7
Answer:
29
Step-by-step explanation:
(c − b)^2 + a^2
Let a = –5, b = –2, and c = –4.
(-4--2)^2 + (-5)^2
(-4+2)^2 + (-5)^2
(-2)^2+ (-5)^2
4 +25
29