Answer: -x^2-2x-1
Step-by-step explanation:
Answer:
(x + 9)² = 36
Step-by-step explanation:
Given
x² + 18x + 57 = 12 ( subtract 57 from both sides )
x² + 18x = - 45
To complete the square
add ( half the coefficient of the x- term)² to both sides
x² + 2(9)x + 81 = - 45 + 81
(x + 9)² = 36
You need to divide 12 by 16 to get a decimal that you can turn into a percent. 12 ÷ 16 = .75. You turn that .75 into 75%. Greg's football team won 75% of their games.
F(5) = -1 would be the correct answer.
It takes you 45 minutes to clean the fish tank and it takes your sister 30 minutes. how long does it take the two of you working together to clean the fish tank
Answer:
My 1 minute work =![\frac{1}{45}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B45%7D)
My sisters 1 minute work =![\frac{1}{30}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B30%7D)
My and My sister's 1 minute work =![\frac{1}{45}+\frac{1}{30}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B45%7D%2B%5Cfrac%7B1%7D%7B30%7D%20)
=![\frac{5}{90}](https://tex.z-dn.net/?f=%5Cfrac%7B5%7D%7B90%7D)
=![\frac{1}{18}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B18%7D)
Me and My sister will finish the work in
minutes