Answer:
i guessing its due now srry i was too late
Step-by-step explanation:
Answer:
<em>(3a + 8b) (3a - 8b)</em>
Step-by-step explanation:
The difference in two perfect "squares" in the scenario would be the (8b) and (-8b).
The 3a would stay consistent through out the whole.
Answer:
26.13 ft^2
Step-by-step explanation:
The area of the triangle is (1/2)(height)(base) = (1/2)(4)(6) = 12. (The base is 6 because it is made up of two radii of the semicircle.)
The area of a whole circle is pi(radius)^2.
Area of whole circle is pi(3^2) = 9pi. But you have only half a circle, so its area is 4.5pi.
Using 3.14 to approximate pi, the area of the semicircle is 4.5(3.14) = 14.13.
Adding this to the area of the triangle, you get a total area
14.13 + 12 = 26.13 ft^2
The figure is represented by the inequality y ≥ 5 · x² - 40 · x - 45. (Correct choice: C)
<h3>What inequality represents the figure</h3>
In accordance with the figure, we have an inequation of the form y ≥ f(x). Now we proceed to find the <em>quadratic</em> equation of the parabola:
f(x) = a · (x + 1) · (x - 9)
- 125 = a · (4 + 1) · (4 - 9)
- 125 = a · 5 · (- 5)
- 125 = - 25 · a
a = - 5
f(x) = 5 · (x + 1) · (x - 9)
f(x) = 5 · (x² - 8 · x - 9)
f(x) = 5 · x² - 40 · x - 45
The figure is represented by the inequality y ≥ 5 · x² - 40 · x - 45. (Correct choice: C)
To learn more on inequalities: brainly.com/question/17675534
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