Part A: the radicand is the same as the discriminant, therefore is b2 - 4ac
In 9x^2 - 16x + 60 = 0, a = 9, b = -16, c = 60
so b2 - 4ac =
${b}^{2} - 4ac = {( - 16)}^{2} - 4(9)(60) \\ = 256 - 2160 = 1904 \\ \sqrt{1904} = + 43.63 \: and \: - 43.63$

Part B: Solve 4x^2 + 8x - 5 = 0
What would make 8? (5×2)-2 = 8, so:
(2x+5)(2x-1) = 0
2x+5 = 0
2x = -5
x = -5/2
2x-1 = 0
2x = 1
x = +1/2
So the solutions are: -5/2, +1/2

5 0

2 years ago

What is the volume of this cube with a side length of 6 centimeters? A cube with side lengths of 6 centimeters. Recall the formu

Sedbober [7]

Answer:

you would multiple length base and height together and since they're all 6 centimeters you would multiply 6 by 6 by 6 and you get216 cubic centimeters

Hope this helps!

Step-by-step explanation:

6 0

3 years ago

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