kitty<3

Well, if you show work, you will most likely have to do the problem:)

9/4 as a decimal is 9 divided by 4.

4 * 2 = 8, with a remainder of 1.

1/4 = 0.25

So 9/4 = 2 + 0.25

= 2.25

Now see if you can write 2/13 as a decimal. I would assume you can round it to the nearest hundredth or thousandth:)

First, calculate (1/3) * 5.

=  $$\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}\left({\frac{{\mathtt{5}}}{{\mathtt{1}}}}\right)$$

The 1's cross-cancel.

=  5/3 , which is an improper fraction.

First write that as an equation:

(1/5)x - 12 = -7

Then solve it.

(1/5)x = -7 + 12

(1/5)x = 5

x = 5/(1/5)

x = 5 * 5

x = 25

Scientific notation always has one nonzero digit before the decimal point. Therefore, the correct scientific notation for this number would be:

3.9 * 10^8

*You move the decimal point one place to the right, and take out one power of 10.

Use the Pythagorean Theorem for this problem:

$${{\mathtt{a}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{b}}}^{{\mathtt{2}}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

In other words: one side of the rectangle squared plus the other side squared equals the diagonal squared.

Therefore:

$${{\mathtt{12}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{17}}}^{{\mathtt{2}}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

$${\mathtt{144}}{\mathtt{\,\small\textbf+\,}}{\mathtt{289}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

$${\mathtt{433}} = {{\mathtt{c}}}^{{\mathtt{2}}}$$

Now take the square root of both sides:

c = $${\sqrt{{\mathtt{433}}}} = {\mathtt{20.808\: \!652\: \!046\: \!684\: \!811\: \!6}}$$

Use the site calculator for this. Type in 0.025 * 872.09.

= $${\mathtt{0.025}}{\mathtt{\,\times\,}}{\mathtt{872.09}} = {\mathtt{21.802\: \!25}}$$

In math, you use it to indicate that a number is raised to a power. For example, 2^3 is equal to two to the third power, or 2*2*2, or 8. On the site calculator, you can type it in or use the "x^y" button. 

First, you would have to find 1,483 -947:

$${\mathtt{1\,483}}{\mathtt{\,-\,}}{\mathtt{947}} = {\mathtt{536}}$$

Now for the answer in scientific notation:

Scientific Notation has one digit before the decimal point, and the number is multiplied by a power of 10 to get the original number.

So 536 would be:

5.36 * 10^2

It is multiplied by 10^2 because 5.36 times 10^2 (or 100) equals 536 (the original answer).

(3/4) / (3/8) is the same as (3/4) * (8/3) because you multiply (3/4) by the reciprocal of (3/8).

Therefore:

(3/4) * (8/3)

The 3's cross-cancel out, and you are left with:

8/4, which simplifies to 2.

|2x+3|<1 tiene ecuaciones:

2x+3<1   y 2x+3>-1

Entonces, es:

2x<-2  y 2x>-4

x<-1  y x>-2