Answer:
B. 4
Step-by-step explanation:
When you perform the multiplication, you get ...
(x +c)(x +4) = x² + (c+4)x +4c = x² + 8x +4c
Then ...
c + 4 = 8 . . . . coefficients of x must match
c = 4 . . . . . matches choice B
Answer:
-30r+15
Step-by-step explanation:
Apply the distributive law:
20(-1.5r)+20 · 0.75
Apply minus plus rules:
-20 · 1.5r +20 · 0.75
Simplify:
-20 · 1.5r + 20 · 0.75 = -30r+15
I hope it's right!! :)
0.48=48/100=12/25~~~12/25>11/25 True✔ ~~~~Have a nice day!!! ★★
Answer:
Step-by-step explanation:
Please, share the answer options next time.
1) f(x) = 2x^2– x – 6 is a quadratic function.
2) The coefficients of this polynomial are a = 2, b = -1 and c = -6
2) Its graph opens up.
3) The x-value of the axis of symmetry and the vertex is x = -b / (2a), which here comes out to x = -(-1) / [2(2)], or x = 1/4
4) the y coordinate of the vertex is f(1/4), or -6 1/8
5) The vertex is at (1/4, -6 1/8)
6) The y-intercept is at f(0): 2(0)^2 - 0 - 6 = -6 => (0, -6)