Answer: 10 is your answer bud ❤
F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)
f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4
Answer: C. x = -5 and x = 4.
Answer if you divide them or x them you'll get the answer!
Answer:
C: x = 11
Step-by-step explanation:
if 28 / 4 = 7, then you divide 40 / 4 to get what WH's side is.
if the side is 10 the x has to be 11 because 11 - 1 = 10
The volume of the pyramid would be 2406.16 cubic cm.
<h3>How to find the volume of a square-based right pyramid?</h3>
Supposing that:
The length of the sides of the square base of the pyramid has = b units
The height of the considered square-based pyramid = h units,
The pyramid below has a square base.
h = 24.4 cm
b = 17.2 cm
Then, its volume is given by:
![V = \dfrac{1}{3} \times b^2 \times h \: \rm unit^3](https://tex.z-dn.net/?f=V%20%3D%20%5Cdfrac%7B1%7D%7B3%7D%20%5Ctimes%20b%5E2%20%5Ctimes%20h%20%5C%3A%20%5Crm%20unit%5E3)
![V = \dfrac{1}{3} \times 17.2^2 \times 24.4 \: \rm unit^3\\\\V = 2406.16](https://tex.z-dn.net/?f=V%20%3D%20%5Cdfrac%7B1%7D%7B3%7D%20%5Ctimes%2017.2%5E2%20%5Ctimes%2024.4%20%5C%3A%20%5Crm%20unit%5E3%5C%5C%5C%5CV%20%3D%202406.16)
Therefore, the volume of the pyramid would be 2406.16 cubic cm.
Learn more about pyramid;
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