Answer:
x = -6 and y = 9
Step-by-step explanation:
It is given that,
0.12x - 0.07y = -1.35 -----(1)
0.4x + 0.8y = 4.8 -----(2)
<u>To find the value of x and y</u>
eq(1) * 100 ⇒
12x + 7y = -135 -----(3)
eq(2) /0.4 ⇒
x + 2y = 12 -----(4)
eq(4) * 12 ⇒
12x + 24y = 144 ---(5)
eq(5) - eq(3) ⇒
12x + 24y = 144 ---(5)
<u>12x - 7y = -135 </u> -----(3)
0 + 31y = 279
y = 279/31 = 9
Substitute the value of y in eq(4)
x + 2y = 12 -----(4)
x + 2*9 = 12
x = 12 - 18 = -6
Therefore x = -6 and y = 9
Answer:
A. 8h=m
Step-by-step explanation:
$8* h= total money m earned.
Answer:
I believe its 60cm squared
I’m not sure
Answer:
2166.53
Step-by-step explanation:
Price x 1.0822 = 1067.0492 <Price with tax
P= PV x i / 1- (1+i)^-n
^ x (identical monthly payments for 5 years aka 12 x 5)
average cost for electricity x (365 x years aka 11)
cost for maintenance x 11
Add all 3 answers
=2166.53
