Answer:
Step-by-step explanation:
this is the answer.hope this helps you
Answer: f(a-2) = 2a² - 14a + 28
Step-by-step explanation:
f(x) = 2x² - 6x + 8
you can take a-2 and substitute it for each x, which would look like this:
f(a-2) = 2(a-2)² - 6(a-2) + 8
then distribute those in ( )
f(a-2) = 2a² - 8a + 8 - 6a + 12 + 8
combine like terms
f(a-2) = 2a² - 14a + 28
Answer:
B, 21
Step-by-step explanation:
78 minus 57 is 21, thus B is the correct choice
24 different ways can they line up to receive their championship rings.
What is a permutation mean in math?
- When the order of the arrangements matters, a mathematical technique called a permutation can be used to calculate the number of alternative arrangements in a collection.
- Common mathematics problems involve choosing only several items from a group of items in a specified sequence.
What are permutations used for?
- When an arrangement requires an order or a sequence, permutations are used.
- Combinations are employed when determining merely the number of potential groups is required and neither the order nor the sequence of arrangements is necessary.
Given,
No. of captains of the football team = 4
So,
4 ways we can line up their championship rings = (4,4)
4 ×3 ×2 ×1 = 24
Therefore, 24 different ways can they line up to receive their championship rings.
Learn more about permutation
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