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3 years ago

40,000 is 10 times as much as

Mathematics

1 answer:

Dimas [21]3 years ago

3 0

40,000 is 10 times as much as 4,000

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Bag A contains 3 red and 2 white marbles

Paladinen [302]

Your question is incomplete.

If you want me to tell the ratio, its 3:2

4 0

3 years ago

Why is the answer to this integral's denominator have 1+pi^2

ss7ja [257]

It comes from integrating by parts twice. Let

$I = \displaystyle \int e^n \sin(\pi n) \, dn$

Recall the IBP formula,

$\displaystyle \int u \, dv = uv - \int v \, du$

Let

$u = \sin(\pi n) \implies du = \pi \cos(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Then

$\displaystyle I = e^n \sin(\pi n) - \pi \int e^n \cos(\pi n) \, dn$

Apply IBP once more, with

$u = \cos(\pi n) \implies du = -\pi \sin(\pi n) \, dn$

$dv = e^n \, dn \implies v = e^n$

Notice that the ∫ v du term contains the original integral, so that

$\displaystyle I = e^n \sin(\pi n) - \pi \left(e^n \cos(\pi n) + \pi \int e^n \sin(\pi n) \, dn\right)$

$\displaystyle I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n - \pi^2 I$

$\displaystyle (1 + \pi^2) I = \left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n$

$\implies \displaystyle I = \frac{\left(\sin(\pi n) - \pi \cos(\pi n)\right) e^n}{1+\pi^2} + C$

6 0

2 years ago

Find the exact circumference. <br><br> r = 6 mm, C = ?

Kazeer [188]

$C=2 \pi r \\ C=2 \pi 6 \\ C=12 \pi$

5 0

3 years ago

Help urgently. Which one should I circle?

ratelena [41]

Answer: 500

Step-by-step explanation:

502.564102564 rounded is 500

8 0

3 years ago

- Find the difference of 8x and twice the sum<br>of x and 7. Write your answer in simplest<br>form.

9966 [12]

Answer:

7*2=14 8x=8*8=64*2

Step-by-step explanation:

Thats how you basically do it now try it!

5 0

3 years ago