Answer:
(20 miles/inch) * (3.5 inches) = 70 miles
Step-by-step explanation:
7 times 2=14
14 times 2=24
24 times 1=24
She would start at the 3 inch mark and count from there.
Can you take a closer pic of this
the discriminant b^2 - 4ac when the equation is in the form of ax^2 +bx+c=0
13x^2-16x = x^2 -x
we need to get in it the standard form
subtract x^2 from each side
12x^2 -16x = -x
add x to each side
12x^2 -15x = 0
12x^2 -15x -0 =0
a=12 b=-15 c=0
b^2 -4ac
the discriminant = b^2
b^2 = (-15)2 = 225
