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3 years ago

Helpppppoppp meeeeeee

Mathematics

2 answers:

madreJ [45]3 years ago

8 0

Answer:

9 feet

Step-by-step explanation:

mart [117]3 years ago

5 0

Answer:

it would be 9 feet

Step-by-step explanation:

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Consider the expansion of (5p + 2q)^6. Determine the coefficients for the terms with the powers of p and q shown.

Step2247 [10]

Answer:

Remember, the expansion of $(x+y)^n$ is $(x+y)^n=\sum_{k=0}^n \binom{n}{k}x^{n-k}y^k$ , where $\binom{n}{k}=\frac{n!}{(n-k)!k!}$ .

Then,

$(5p+2q)^6=\sum_{k=0}^6\binom{6}{k}(5p)^{6-k}(2q)^k=\sum_{k=0}^6\binom{6}{k}5^{6-k}2^k p^{6-k}q^k$

Then, the coefficient of the term $p^{6-k}q^k$ is $\binom{6}{k}5^{6-k}2^k$

a) since 6-k=2, then k=4. So the coefficient of $p^2q^4$ is

$\binom{6}{4}5^{6-4}2^4=15*5^2*2^4=15*25*16=6000$

b) since 6-k=5, then k=1. So, the coefficient of $p^5q$ is

$\binom{6}{1}5^{6-1}2^1=6*5^5*2=37500$

c) since 6-k=3, then k=3. So, the coefficient of $p^3q^3$ is

$\binom{6}{3}5^{6-3}2^3=20*5^3*8=20000$

6 0

3 years ago

Select the correct answer from the drop-down menu.

omeli [17]

La réponse à ton exercice est la B

4 0

3 years ago

Help please

BlackZzzverrR [31]

Answer:

<h2>I think it is y = - 1 </h2>

Step-by-step explanation:

I hope that is useful for you :)

3 0

3 years ago

Find y when x=9 if y varies directly as x, and y=245 when x=7

Aleonysh [2.5K]

Since y varies directly as x, you know that y=245 and x=7 can be used as a proportion, 245/7. When you multiply this proportion to 9, you get 315. This is the value of y when x=9.

y=315

8 0

3 years ago

The numerator of a fraction is 9 and the denominator is 6. All of the following numbers are equivalent except ____.

RSB [31]

2/3 Hass to be the answer because the larger number nine would be on top as the numerator. Therefore, I know this without even having to simplify. Hope this helps :-)

5 0

3 years ago

Read 2 more answers