Answer:
Step-by-step explanation:
Each equation is in vertex form, so you can easily determine the number of real roots. The leading coefficient tells you whether the parabola opens upward (positive) or downward (negative).
y = a(x -h)^2 +k
has leading coefficient "a" and vertex (h, k).
__
<u>f(x) = 1/3(x +5)^2 +7</u>
vertex: (-5, 7), opens downward
The vertex is above the x-axis, so there are two real roots.
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<u>f(x) = -5(x -3)^2</u>
vertex: (3, 0), opens downward
The vertex is on the x-axis, so there is one real root.
Well if 2 tons equals 2000 pounds then all we have to do is a 1/4 and
simplify to . 25 so your answer is 2025
Answer:
5. A.
6. F
Step-by-step explanation:
5. Perpendicular lines have slopes that are negative reciprocals of one another, so slope is 3
y = 3x + b
using coordinates (-6,3)
3 = 3(-6) + b
b = 21
y = 3x + 21
6. I think F is the right answer
Answer:
800
Step-by-step explanation:
Find the area of everything first.
30 times 38 = 1140. ( This would be if everything was shaded)
Next, find the area of the mini square.
To do that, calculate the length first.
30-7-6= Length= 17
20 times 17 = 340
1140-340= 800
