X+y=12
8x+10y=102
8x+8y=96
8x+10y=102 _
-2y= -6
y=3
x+y=12
x=12- 3
x=9
or
8x+10y=102
8x+30=102
8x=102-30
8x=72
x=9
Answer:
log4(1024)=5
Step-by-step explanation:
the 4 is a subscript
Answer:
$71.20
Step-by-step explanation:
Multiply 89 to .2 and you get 17.8 then you subtract that from the originat cost.
Answer:
x = 1
, y = -2
Step-by-step explanation:
2x + 5y + 11 = 0 --- Equation 1
3x - y - 8 = 0
15x - 5y - 40 = 0 --- Equation 2
Equations 1+2: 2x + 5y + 11 + 15x - 5y - 40 = 0 + 0
17x - 29 = 0
17x = 29
x = 29 ÷ 17
x = 1
Substitute x = 1
into Equation 1:
2x + 5y + 11 = 0
2(1
) + 5y + 11 = 0
3
+ 5y = -11
5y = -11 - 3
= -14
y = -14
÷ 5
y = -2