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dedylja [7]
3 years ago
5

Drew's weekly allowance is $8. His friend Jan's weekly allowance is $10. Drew spends $3 a week and Jan spends $4 a week.

Mathematics
1 answer:
Oxana [17]3 years ago
3 0
For drew
5w=55

5w/5=55/5

W=11
11 weeks

For jan

6w= 55

6w/6 = 55/6

W=9.16
9 weeks

Together
6+5 = 11
11w=55
11w/11=55/11
W=5
5 weeks
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Step-by-step explanation:

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The equation 6.32=k2 shows that buying 2 bags of apples would cost 6.32. how much is it for one bag
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Step-by-step explanation:

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I don't speak Romanian, but the closest translation for this suggests you're trying to compute

\displaystyle \int x^3 \ln(x)^2 \, dx

Integrate by parts:

\displaystyle \int x^3 \ln(x)^2 \, dx = uv - \int v \, du

where

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dv = x³ dx   ⇒   v = 1/4 x⁴

\implies \displaystyle \int x^3 \ln(x)^2 \, dx = \frac14 x^4 \ln(x)^2 - \frac12 \int x^3 \ln(x) \, dx

Integrate by parts again:

\displaystyle \int x^3 \ln(x) \, dx = u'v' - \int v' du'

where

u' = ln(x)   ⇒   du' = dx/x

dv' = x³ dx   ⇒   v' = 1/4 x⁴

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So, we have

\displaystyle \int x^3 \ln(x)^2 \, dx = \frac14 x^4 \ln(x)^2 - \frac12 \left(\frac14 x^4 \ln(x) - \frac14 \int x^3 \, dx \right)

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hodyreva [135]

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