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3 years ago

What is 0.31 written as a percent?

Mathematics

2 answers:

aalyn [17]3 years ago

7 0

It is 31%.

To explain, you have to just have to multiply 0.31 by 100, and then add a percentage sign.

Sindrei [870]3 years ago

7 0

31%
<span>To write 0.31 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol %. 0.31/100% =31%</span>

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Rose bought 6 pairs of socks for $15.30. Jack bought 10 pairs of socks for $25.00 Part A: Jack says that he paid less per pair o

xz_007 [3.2K]

Answer:

50.4

Step-by-step explanation:

you need to do 15.30 plus 10 which is 15.40 than take that add 25.00 to it and you get 40.4 that 5 plus 5 whixh is 10 ans you get

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2 years ago

How to solve derivative of (sin3x)/x using first principle

Leona [35]

$\dfrac{d}{dx}(\dfrac{\sin(3x)}{x})$

First we must apply the Quotient rule that states,

$(\dfrac{f}{g})'=\dfrac{f'g-g'f}{g^2}$

This means that our derivative becomes,

$\dfrac{\dfrac{d}{dx}(\sin(3x))x-\dfrac{d}{dx}(x)\sin(3x)}{x^2}$

Now we need to calculate $\dfrac{d}{dx}(\sin(3x))$ and $\dfrac{d}{dx}(x)$

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$\dfrac{d}{dx}(x)=1$

From here the new equation looks like,

$\dfrac{3x\cos(3x)-\sin(3x)}{x^2}$

And that is the final result.

Hope this helps.

r3t40

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2 years ago

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]solomon needs to justify the formula for the arc length of a sector. which expression best completes this argument? the circumf

Anna35 [415]

Answer:

$\frac{2 \pi r}{\frac{360^{\circ}}{n^{\circ}}}$ best completes this argument

Step-by-step explanation:

Circumference of circle = $\pi \cdot d$

Where d is the diameter of circle

We are given that if equally sized central angles, each with a measure of n°, are drawn, the number of sectors that are formed will be equal to $\frac{360^{\circ}}{n^{\circ}}$

So, Number of sectors = $\frac{360^{\circ}}{n^{\circ}}$

The arc length of each sector is the circumference divided by the number of sectors

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Diameter d = 2r (r = radius)

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Option b is true

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3 years ago

I'll mark brainliest just tell me how to.

IRINA_888 [86]

Answer:

a = 12

b = 2

c = 11

Step-by-step explanation:

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3 years ago

0.4x+18=-13 what is x?

Rasek [7]

Answer:

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Step-by-step explanation:

Start by subtracting 18 from both sides. With you get 0.4=-21. Now divide 0.4 into both sides.

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3 years ago

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