Let A be the amount of 100% acid.
100A+20*(6)=40*(A+6)
100A+120=40A+240
60A=120
A=2 gallons
Answer:
a. yes
b.no
c. no
work:
9.25/2.5 = $3.70.
let's find the unit rates of the others!
16.28/4.4 = $3.70
12/3.2 = $3.75
10.50/2.8= $3.75
only the first one has the same untit rate, the rest are different!
hope this helps :D
Answer:
Parabola
Step-by-step explanation:
When only one variable is squared, the conic is a <em>parabola</em>.
_____
both squared, same sign, same coefficient: circle
both squared, same sign, different coefficients: ellipse
both squared, different signs: hyperbola
