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3 years ago

8

Whitney read a total of 4 books over 2 months. if whitney has read 16 books so far, how many months has she been with her book c

lub? solve using unit rates.

1 answer:

Tema [17]3 years ago

8 0

She has been with her book club for eight months.

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PLEASE HELP ASAP!

fomenos

Answer:

The answer could be A

Step-by-step explanation:

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3 0

3 years ago

Find the coefficient of the x^3 in the expansion of (2x-9)^5

il63 [147K]

Use the binomial theorem:

$\displaystyle (2x-9)^5 = \sum_{k=0}^5 \binom5k (2x)^{5-k}(-9)^k = \sum_{k=0}^5 \frac{5!}{k!(5-k)!} 2^5 \left(-\frac92\right)^k x^{5-k}$

The <em>x</em> ³ terms occurs for 5 - <em>k</em> = 3, or <em>k</em> = 2, and its coefficient would be

$\dfrac{5!}{2!(5-2)!} 2^5 \left(-\dfrac92\right)^2 = \boxed{6480}$

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2 years ago

What two number multiplies to get 15 and adds to get 6

OverLord2011 [107]

Asking the Math Gods...

The factors of 15 Answer : 1,3,5,15

so 3 and 5 are the only that would get 15

therefore this problem isnt correctly written.. You can't get 6 by adding any of the factored numbers

5 0

2 years ago

Number ten please thanks

BlackZzzverrR [31]

-3^2= -(3)^2

The exponent of 2 only applies to the number 3. -(3)^2 should equal -9. This is true because according to the order of operations, exponents should be evaluated before multiplication. The negative sign here represents -1* 3^2.
If you want to find -3 to the power of 2 it must be written (-3)^2.

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3 years ago

What is the square root of x over the square root of x to the 1/4 power

denis23 [38]

4 as the denominator of the fraction is equal to the degree of the root so the answer is the 4th root of x $\sqrt[4]{x}$

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3 years ago