Answer:
$115
Step-by-step explanation:
Because the add does that like answer
I wait that you understand
Rate = 85 minutes/10 miles
he runs a mile every 8.5 minutes
8 x 8.5 =68
This is because you multiply the Mileage(8) by the rate that was aquired. :)
Answer:
f(x) = 2x² - 8x - 10.
This is a parabola open upward (since a>0) with an axis of symmetry = -b/2a:
a) axis of symmetry: x = -(-8)/(2*2) = 8/4 = 2. Then x = 2, which is the x component of the vertex
b) for x = 2, f(x) = f(2) = - 18 (component of y of the vertex)
c) VERTEX(2, - 18)
d) DISCRIMINENT: b² - 4.a.c = 64 - 4*2*(-10) = 144
Hope this helps! :)
The least common multiple of 9 and 21 is 63
