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Irina18 [472]
2 years ago
14

The price of a toy usually costing £50 to £65 work out the percentage increase FAST!!

Mathematics
2 answers:
VLD [36.1K]2 years ago
6 0

Answer:

50 * 1.3 = 65

130% increase

OverLord2011 [107]2 years ago
6 0
30% increase :))))))))
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(1)/(5)x +3=2x-24 <br> Anwser please kitten
vivado [14]

Answer:

x = 15

Step-by-step explanation:

Hope this helps! :D

5 0
3 years ago
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5x-13=x-13<br><img src="https://tex.z-dn.net/?f=5x%20-%2013%20%3D%20x%20-%2013" id="TexFormula1" title="5x - 13 = x - 13" alt="5
Alecsey [184]

Answer:

x=0

Step-by-step explanation:

I must assume that your goal is to "solve for x."  State your goal explicitly each time you post a problem.

Combining like terms, we get 4x = 0, so that x = 0.

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tatuchka [14]

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2 years ago
Solve -37 n = -56 for n
KIM [24]
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4 0
3 years ago
The closed form sum of
zalisa [80]

Perhaps you know that

S_2 = \displaystyle\sum_{k=1}^n k^2 = \frac{n(n+1)(2n+1)}6

and

S_3 = \displaystyle\sum_{k=1}^n k^3 = \frac{n^2(n+1)^2}4

Then the problem is trivial, since

\displaystyle\sum_{k=1}^n k^2(k+1) = S_2 + S_3 \\\\ = \frac{2n(n+1)(2n+1)+3n^2(n+1)^2}{12} \\\\ = \frac{n(n+1)\big((2(2n+1)+3n(n+1)\big)}{12} \\\\ = \frac{n(n+1)\big(4n+2+3n^2+3n\big)}{12} \\\\ = \frac{n(n+1)(3n^2+7n+2)}{12} \\\\ = \frac{n(n+1)(3n+1)(n+2)}{12}

Then

12\bigg(1^2\cdot2+2^2\cdot3+3^2\cdot4+\cdots+n^2(n+1)\bigg) = n(n+1)(n+2)(3n+1)

so that <em>a</em> = 3 and <em>b</em> = 1.

4 0
3 years ago
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