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.
The median is 6
the mode is 7
and the mean is 22
Answer:
1.3a+2 ex:6
2.5a+3 ex:8
3.7a+4 ex:11
Step-by-step explanation:
Just convert a water into any number.
<span>1. 12
2. 225 sq. ft.
3. 6.25 sq. ft.
4. no
5. $3.00
6. 6
please make my answer best answer thank you
p.s. the very first question is 600 sq. in.</span>