If f(x) = 2x2 + 1 and g(x) = x2 - 7, find (f + g)(x).
1 answer:
Answer:
(f+g)(x) =
Step-by-step explanation:
First, lets understand what (f+g)(x) means.
(f+g)(x) is when you are taking the values in the function f(x) and adding it to the values in the function g(x).
So, this is what the equation looks like when you substitute the functions in to (f+g)(x):
(f+g)(x) =
Now, combine like terms and Simplify:
(f+g)(x) =
This is your final answer.
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Answer:
A. 3.85
Step-by-step explanation:
- If 11 oranges cost $2.35, we could calculate the cost of each of these oranges, simply dividing the total cost ($2.35) between the amount of oranges bougth (11). This will give us the cost of a single orange, that is, the unitary cost=
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- Then, if we want to know the cost of 18 oranges, we just have to multiply the cost of a single orange (0.21) by 18: 0.21x18 = 2.85
Answer: Yes, it is
Step-by-step explanation:
To simplify square roots, you can factor the number inside the square root into its lowest common denominators.
Any value that appears twice can be "taken out" of the square root and moved to the left of it:
,
What you are doing is essentially taking the square root of 4 and the square root of 3. Because the square root of 4 can be simplified, and the square root of 3 cannot, this is the most simplified version of the expression we can reach.