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NikAS [45]
3 years ago
12

What is the product? (9r-4)(-9r-4)

Mathematics
1 answer:
Naily [24]3 years ago
6 0
Product = sum of multiplication
If you expand the polynomial using the FOIL method you get the answer of:
-81r^2 + 16

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Find the value of x so that the function has the given value.<br> k(x)=7;k(x)=49
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Answer:

i don't what you want me to do here...

You gave me the same problem just two different numbers so maybe the answer is 7... idek tho bro

k times x = 7

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Step-by-step explanation:

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Which expression is represented by the phrase "9 less than 5 times a number"?
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2 years ago
Of the 8 students in the chess club, three will represent the club at an upcoming competition. How many different 3-person teams
xz_007 [3.2K]
I think that this is a combination problem. From the given, the 8 students are taken 3 at a time. This can be solved through using the formula of combination which is C(n,r) = n!/(n-r)!r!. In this case, n is 8 while r is 3. Hence, upon substitution of the values, we have

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