NinjaDevo

A = 1/2bh                  ---Divide both sides by h

A/h = 1/2b                ---Multiply both sides by 2

A/h*2= 1b 

A/h*2 = b

b = A/h*2

Darn. Your always faster than me Aziz. :)

7 is the same thing as $$\frac{7}{1}$$ so we get:

$$\frac{7}{1}\times\frac{5}{3}$$

Multiply the tops and bottom together.

$$\frac{7\times5}{1\times3}$$

$$\frac{35}{3}$$

or

$$11\frac{2}{3}$$

n^3 is a common term in both of these numbers, so we can subtract -3 -3 and put n^3 after it:

-3n^3 - 3n^3

(-3 - 3)n^3

-6n^3

This is probably best done on a calculator. Here's what the website's calculator gave me:

First, turn 3 3/4 and 3 1/3 into inproper fractions. Here's how:

This isn't a complete question. Maybe your wondering how to find the slope of this line?

If so, to find the slope we can use the following formula:

$$slope = \frac{y_2-y_1}{x_2-x_1}$$

Put in the coordinates:

$$slope = \frac{1- (-1)}{-3- (-7)}$$

$$slope = \frac{1+(+1)}{-3+(+7)}$$

$$slope = \frac{2}{4}$$

$$slope=\frac{1}{2}$$

Alright, so we have:

$$-\frac{3}{4} \div 3$$

When we have a negative infront of a fraction, we can carry that to the numerator (top number) It will remain the same.

$$\frac{-3}{4} \div 3$$

Which is the same as:

$$\frac{-3}{4} \div \frac{3}{1}$$

Now we SKIP, CHANGE, FLIP. When dividing two fractions, youSKIP the first fraction, CHANGE the division sign to a multiplication sign, and FLIP the second fraction.

$$\frac{-3}{4} \times \frac{1}{3}$$

We can now multiply the top and bottoms together.

$$\frac{-3 \times 1}{4 \times 3}$$

$$\frac{-3}{12}$$

Reduce the fraction

$$\frac{-3\div3}{12\div3}$$

$$\frac{-1}{4}$$

or

$$-\frac{1}{4}$$

You have to start by dividing 2.70 by 2.85. Then multiply that answer by 100.

7 x 4 = 28

There's really no rule to remember here, you just have to memorize your basic times tables.