Answer:
d is correct
Step-by-step explanation:
Answer:
i think theres a typo somewhere
Step-by-step explanation:
Use this systems of equations to solve:
x = first antifreeze
y = second antifreeze

Isolate y.
x + y = 15
Subtract x from both sides.
y = -x + 15
Substitute y into the other equation.
.2x + .12(-x + 15) = .18(15)
Simplify.
.2x - .12x + 1.8 = 2.7
Subtract 1.8 from both sides.
.08x = .9
Divide both sides by .08
x = 11.25
Substitute x in the equation that we isolated y in.
y = -11.25 + 15
y = 3.75
11.25 L of the first antifreeze and 3.75 L of the second.
Answer: x=−5
Step-by-step explanation:
8x+32=5x−3−4x
8x+32=x−3
8x+32−x=−3
7x+32=−3
7x=−3−32
7x=−35
x=- 35/7
x=−5
4*200+4*70+4*5, or you can just use a calculator.