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Allisa [31]
3 years ago
7

Last week Rachel power walked 2 miles per day on each of the 7 days. During the

Mathematics
1 answer:
Nady [450]3 years ago
6 0

Answer: 34 miles

Step-by-step explanation:

First multiply the 2 miles she power walked by the 7 days. (14 miles)

Next, multiply the 5 miles by the 4 days. (20)

Add both numbers, 20+14=34 miles

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Find the coefficients of the terms below in the expansion of (uu+vv)8. Explain your reasoning.
gladu [14]

Answer:

Remember, the expansion of (u+v)^n=\sum_{k=0}^n\binom{n}{k}u^{n-k}v^k.

Then,

(u+v)^8=\sum_{k=0}^8\binom{8}{k}u^{8-k}v^k

a) since u^{8-k}=u^2, then 8-k=2, k=6. Therefore, the coefficient of u^2v^6 is \binom{8}{6}=28

b) u^3v^5=u^{8-k}v^k. Then k=5 and the coefficient of the term is \binom{8}{5}=56

c) u^4v^4, then k=4 and the coefficient of the term is \binom{8}{4}=70

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3 years ago
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lisabon 2012 [21]

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4 years ago
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Harlamova29_29 [7]

Answer:

- 5/4

Step-by-step explanation:

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3 years ago
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Evaluate<br> (9n +8m) <br> —————<br> 2j <br> when n = 4, m = -2 and j = 5<br> 2j
Anuta_ua [19.1K]

Answer:

<h2>2</h2>

Step-by-step explanation:

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MArishka [77]
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3 years ago
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