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You can use the calculator, too.  The answer is 11.

Hope it helps!

Okay, okay. I will. 

The twins are in the same body. They were not killed because the other brother was not doing the crime, and the other did. They were free of trial because one was guilty, and the other wasn't. Fine, Melody. You can become rich. You win half that amount for getting one part correct.

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-Another Anonymous

When raising a number to the power of a fraction, the numberator of the fraction becomes your new exponet, and the demoninator becomes your root.

[] Brackets are used to define intervals

However, if an interval does not contain a specific value, such as 0, but the interval is from 0 to 5 and contains the value of 5, then:

(0, 5]

Note the use of the opening parenthesis.

I assume you mean the square root of 4^3:

sqrt(4^3) =

sqrt(4*4*4) =

sqrt(16*4) =

sqrt(64) =

$$\mathbf{\pm\;8.}$$

Do do an abolute value on this calculator, type in abs followed by parentheses, as shown below:

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no idea bro

Note the pattern here.......

2⁰  = 1 person knows at 4:15

2¹ =  2 more people know at 4:30

2²  =  4 more people know at 4:45

2³ =  8 more people know at 5:00

  .......and note that the sum of the previous terms is always one less than the last term. Therefore 63 + 2⁶  = 63 + 64 = 127. This implies that, starting at 4:15 PM ......6 "blocks" of 15 minutes (= 90 minutes) are necessary to notify 127 students. So, by 5:45 PM, 127 students are notified. This means that one more 15 minute block will be necessary to notify all 176 students = 6:00 PM

First, click the "2nd" button

Now click the "%" sign

To find what x equals, we need to get x alone on one side of this equation.

Here's the steps on how you would do that:

4-5x=1+6x              ---Add 5x to both sides to "clear" -5x from the left side

  +5x    +5x

--------------

4 = 1 + 6x + 5x        ---Combine 6x and 5x to get 11x

4 = 1 + 11x            ---Subtract 1 from both sides to "clear" 1 from the right side

-1   -1

----------

3 = 11x                --Now divide both sides by 11

3 ÷ 11 = x           --3 divided by 11 is really 3/11, because the fraction bar means to divide

3/11 = x

which means that

x = 3/11

|–7| x |5| + 18 |–6| =

7 x 5 + 18 x 6 =

35 + 108 =

143

it was actually 10<x<20

Melody

yes but I am just a 12 yr old and so my parents won't allow me to sign up.

the proof was written by me, a 12 year old.

It depends on the context.  Sometimes it means the number e, which is approximately:

$${\mathtt{e}} = {\mathtt{2.718\: \!281\: \!828\: \!459\: \!045\: \!2}}$$

Sometimes it is used to represent 10 to some power, when used in, for example: 5e3, which would mean 5x10³

The latter use is common in some computing languages.

Let f be number of apartments in first building and s be number in second building.

Then we are told:

f + s = 15      ...(1)

2*f - 3*s = 5 ...(2)

From (1) we can write f = 15 - s

Replace f in (2) by 15 - s to get:

2*(15 - s) - 3s = 5

30 - 2s - 3s = 5

30 - 5s = 5

Subtract 5 from both sides 

25 - 5s = 0

Add 5s to both sides

25 = 5s

Divide both sides by 5

s = 5

Put this back into (1)

f + 5 = 15

Subtract 5 from both sides

f = 10

Percentage means parts out of 100. To find the percentage, first create the fraction (233/294) and then multiply by 100

(233/294)*100 ≈  79.25%

If the radius is 80cm the circumference is 2pi*80cm.

If the wheel rotates by 60° then a fraction 60/360 (= 1/6) of the circumference moves over the ground.  So the distance moved is 2pi*80/6cm

$${\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{\mathtt{80}}}{{\mathtt{6}}}} = {\mathtt{83.775\: \!804\: \!095\: \!727\: \!819\: \!7}}$$

or approximately 84cm

There is no ratio button as such.  Just enter the ratio as a fraction.

Combine the 85 and -43 into 42

?*12 + 42 = 246

Subtract 42 from both sides

?*12 = 204

Divide both sides by 12

? = 204/12 = 17

Just enter, for example, 3 + 1/2 and press =

$${\mathtt{3}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{2}}}} = {\frac{{\mathtt{7}}}{{\mathtt{2}}}} = {\mathtt{3.5}}$$

You did all of that in ten minutes?

That is much more impressive than solving the equation!