Answer:
(3) (m - 16)(m + 4)
Step-by-step explanation:
Given the expression:
m^2 -12m - 64.
Using quadratic formula:
![m = \frac{-b \pm \sqrt{b^2 - 4(a)(c)}}{2(a)}](https://tex.z-dn.net/?f=%20m%20%3D%20%5Cfrac%7B-b%20%5Cpm%20%5Csqrt%7Bb%5E2%20-%204%28a%29%28c%29%7D%7D%7B2%28a%29%7D%20)
![m = \frac{12 \pm \sqrt{(-12)^2 - 4(1)(-64)}}{2(1)}](https://tex.z-dn.net/?f=%20m%20%3D%20%5Cfrac%7B12%20%5Cpm%20%5Csqrt%7B%28-12%29%5E2%20-%204%281%29%28-64%29%7D%7D%7B2%281%29%7D%20)
![m = \frac{12 \pm 20}{2}](https://tex.z-dn.net/?f=%20m%20%3D%20%5Cfrac%7B12%20%5Cpm%2020%7D%7B2%7D)
![m_1 = \frac{12 + 20}{2}](https://tex.z-dn.net/?f=%20m_1%20%3D%20%5Cfrac%7B12%20%2B%2020%7D%7B2%7D)
![m_1 = 16](https://tex.z-dn.net/?f=%20m_1%20%3D%2016)
![m_2 = \frac{12 - 20}{2}](https://tex.z-dn.net/?f=%20m_2%20%3D%20%5Cfrac%7B12%20-%2020%7D%7B2%7D)
![m_2 = -4](https://tex.z-dn.net/?f=%20m_2%20%3D%20-4)
Then, the factored expression is:
(m - 16)(m + 4)
Answer:
a)10$
Step-by-step explanation:
Answer:
7.62
Step-by-step explanation:
use the Pythagorean theorem
3^2+7^2=58
the square root of 58 is about 7.62
Answer: half a lap would take 45 seconds
Step-by-step explanation:
The answer is 72 because 2x6=12 and 5x12=60 and together it’s 72