First you would divide 48 by 4 which equals 12.
after this you are left with 15-?=12.
?=3
The answer to this question is option B
Answer:
<h3>
y = 2(x - 3)² - 20</h3>
Step-by-step explanation:
y = a(x - h)² + k - vertex form of the equation of the parabola with vertex (h, k)
So the equation of the parabola with vertex (3, -20):
y = a(x - 3)² + (-20)
y = a(x - 3)² - 20
The parabola passes through point (7, 12) so if x=7 then y=12
12 = a(7 - 3)² + (-20)
12 +20 = a(4)² - 20 +20
32 = 16a
a = 2
Therefore the equation of the parabola with vertex (3, -20) and that passes through point (7, 12):
y = 2(x - 3)² - 20
Answer:
2000
Step-by-step explanation:
Answer:
a = 3
Step-by-step explanation:
The triangles are similar, so the ratio of short side to long side is the same for each:
(a +5)/12 = 12/18
a +5 = 12(12/18) = 8 . . . . . multiply by 12
a = 3 . . . . . . subtract 5