9514 1404 393
Answer:
(A) -4 and -2
Step-by-step explanation:
The constant in the function tells you f(0) = 5.
You know that the positive leading coefficient means the value of f(x) will be negative for x-values smaller than some number. The offered answer choices indicate the value x = -4 is a lower bound on the value of c. So, -4 < c < 0, for sure.
To further refine the interval, you would need to know f(-2) and/or f(-1).
f(-2) = (-2)³ -2(-2) +5 = -8 +4 +5 = 1
Then -4 < c < -2.
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I find a graphing calculator to be very helpful locating zeros of polynomials.
Please repost a clear picture so I can help, Thanks.
Answer:
14 and 15
Step-by-step explanation:
The square root of 219 is 14.798, this number lies between 14 and 15
hope this helps :))
Answer:12
Step-by-step explanation:
it might be wait for other answers
Answer:
Domain: [10, ∞)
Step-by-step explanation:
Domain is the set of x-values that can be inputted into function f(x).
Step 1: Write equation
f(x) = √(x - 10)
We know that if we get negatives under the square root, we would get imaginary numbers.
Our domain to include all x-values would have to be bigger than 10:
f(10) = √(10 - 10) = √0 = 0
If the number is smaller than 10, we get: f(9) = √(9 - 10) = √-1 = i
Therefore, our real numbers domain would be [10, ∞) or x ≥ 10.
