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2 years ago

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 Anwser please kitten

vivado [14]

Answer:

x = 15

Step-by-step explanation:

Hope this helps! :D

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3 years ago

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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.

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3 years ago

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tatuchka [14]

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Yes 10.7

Step-by-step explanation:

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2 years ago

Solve -37 n = -56 for n

KIM [24]

-37 n = -56
n=-56/-37
n=56/37 or ~1.51

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 a = 3 and b = 1.

4 0

3 years ago