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$$\begin{array}{l}
\frac{-1}{-2}\times4\\\\
\frac{-1}{-2}\times\frac{4}{1}\\\\
\frac{-1\times4}{-2\times1}\\\\
\frac{-4}{-2}\\\\
\frac{+4}{+2}\\\\
\frac{4}{2}\\\\
\frac{2}{1}\\\\
2
\end{array}$$

If you are driving your car down Hynds Blvd. at 30.0 mph, how many meters per second is this?

How many feet per second is 30.0 miles per hour?

a times a = a*a = a².

7n - 2 = 6n - 2n

First, let's collect like terms on the right-hand-side:

7n - 2 = 4n.

Now, we can subtract 7n from both sides:

-2 = 4n - 7n

-2 = -3n.

Finally, we divide both sides by -3:

-2/-3 = n.

n = 2/3.

Please post questions you have about physics.

First, it is easiest to get rid of the 1/3 by multiplying both sides by 3:

3m = bc.

Now, all you have to do is divide both sides by b:

3m/b = c.

c = 3m/b.

The " - " key located next to "0" on the top of a keyboard. 

OR

The " - " key located under "X" on the calculator located on the home page. 

What equation? Need the equation to help you.

If you are dividing a number or fraction by a fraction, then you use the skip, change, & flip method where you multiply by the reciprocal: 3 divided by 4/3 = 3 * 3/4 = 9/4.

If you have 1/4 + 1/4, then you just directly add.

1.) 4x+5 = 2x-7
    -2x       -2x

2.) 2x+5 =  -7
          -5      -5

3.) 2x = -12
     /2      /2

Answer:
x = -6

Check:
4(-6)+5 = -19
2(-6)-7 = -19  

4x + 5 = 2x- 7

Subtract 2x from both sides:

2x +5 = -7

Now subtract 5 from both sides:

2x = -12

Divide by 2 to get the value of x. 

x = -6

The tablecloth is a square, so the area, 30ft², is the lengths of the sides squared. 

Therefore, one side's length is the square root of 30.

$${\sqrt{{\mathtt{30}}}} = {\mathtt{5.477\: \!225\: \!575\: \!051\: \!661\: \!1}}$$

Now round that to the nearest tenth for your answer in feet.

Because i said so

For 3 & 4, to find the slope, use y2 - y1 divided by x2 - x1.

Let one point be (x1, y1) and the other (x2, y2).

Then, choose one of the two points to use for y - y1 = m(x - x1).

For 2, follow the same format as 1.

8: 2/3

8 divided by 2/3

Skip, change, & flip.

8 * 3/2 (see what changed from 8 divided by 2/3 to this?)

24 / 2

12 / 1

Convert back to ratio form:

12:1.

1.) Slope = -4; (1,-3)

2.) Slope =.5; (-8,-5)

3.) (2,1) and (0,-7)

4.) (-6,-6) and (2,-2)

Simply multiply 1*1 / 2*3

= 1/6.

Can you post them as 1) 2) 3) 4) rather than all of them in just one line.

There are more than just three.... Four questions not three, and what do you mean it doesnt form a line? i'm confused.

Multiply by 100, which yields 29.292929... .   Subtract the original decimal quantity by this number to obtain

29.  Thus:

100x=29.292929.....

      x=0.292929....

Subtract:

99x = 29

Divide both sides of equation to obtain:

x=29/99

I believe you mean as a fraction.

For the cube root of a if a = 216:

Find a number such that a*a*a = 216.