You can ask for a tutor those are pretty quick it helped me a lot!
Answer:
Step-by-step explanation:
The residual is -1.5 so the answer is a
The expected value is 8.5 when you plug 4 into the equation
Residual=observed-expected=7-8.5=-1.5
Answer:
3
Step-by-step explanation:
To find the average add all these numbers together, then divide by how many numbers you have.
Answer:
The flower garden width would be 6 ft
Step-by-step explanation:
A = 12 ft^2 = x(x + 4) becomes:
x^2 + 4x - 12 = 0, or (by completing the square) x^2 + 4x + 4 - 4 - 12 = 0
Thus, we have (x + 2)^2 - 16 = 0, or (x + 2)^2 = 16
Taking the square root of both sides yields x + 2 = ±4.
In this context only a positive x value makes sense: x = 2 + 4 => x = 6.
The flower garden width would be 6 ft. The other dimension would be 6 - 4, or 2, ft.