It is almost expanding, but 40 plus 45 would be 85. Remember addition is commutative. So 

2,094 would be your answer.

First, combine like terms. subtract 2u from both sides. You will get 5=2u+14. Subtract 14 from both sides. You will get -9=2u. This will NOT be a regular answer. Then divide both sides by 2. You will get u=-4 1/2 or -9/2.

A woodchuck would chuck as much wood as a woodchuck could chuck if a woodchuck could chuck wood.

you can post any math question, and someone here will help you. Everybody helps each other. :)

Do you want to find n? Well, first you know that it has to be a positive to produce a negative. so just multiply -9 by -387. You will get 3483 as your answer for n.

put 18 over 100. You get 18/100. Then, put a question mark over 200. It will look like this. 18/100=?/200. Then, to get from 100 to 200, you multiply by 2. Do the same with 18 to get to the mystery number. The answer will be 36

5+23=28

In response to your very, very interesting question I have a question for you. Can a woodchuck chuck wood? If he can then I assume he'd throw as much as he would like. If a woodchuck can not chuck wood this question, though still very interesting, would be a waste of time to ask. This question if a woodchuck really could chuck wood would still be a waste of time. Should it really matter how much wood a wood chuck would chuck? Does it really matter enough to watch and observe many woodchucks over a long period of time. If this is a pointless question why would anyone respond to this? Because it is pointless! Of course to a woodchuck this question would be on going in their head for eternity. Help the next woodchuck you find throw wood and count. Help him learn as you learn. After that share it so we all learn and he shall share it with his woodchuck friends. Then they'd tell the beavers. Beavers like to talk so they'd tell everyone. Soon the whole world will come together (including animals) and sing praise to God our Father to bless whoever found the answer to this question! I've told you this, now go find a woodchuck and name him cheeky. After that, help him find the answer to this question by doing exactly as I have told you. Soon you will be famous and probably turn into president for helping answer this nearly impossible answer. Thank you, that is all.

the absolute value is like opposites 

EXAMPLE:

the absolute value of 81 is 9 and negative 9

An absolute value is a sign that looks something like this: |

When you have numbers in absolute values, you always make the number inside them positive.

Say you have something like this:

|3-5|

You first do the operations inside the absolute values, then you make it positive.

|-2|

and now you make it positive, so you get 

2

Also, if the number inside the absolute values is positive, you still leave it positive.

If you have a problem like:  4  =  x / 8

multiply both sides by 8:    4 x 8  =  x    --->  32  =  x

it is a negative number

you're food.....dont hate.

I'm a grade 8 Royal Conservatory Mayonnaiseist.

5x-5=4x+4

5x-4x=4+5

x=9 sweggg

(3)(−4)(2)=-24 and thats and thats a fact jack

if you have 5 and add 23 you get 28

5784658365+63675748475= 69460406840 what you do is you put one colum on top of the other and then you add

dont ask questions like that this site is for math

I second what happy7 says.

If there is a set of chapter review exercises, do them.

If you have your assignments for the chapter, go over these problems; the test probably consists of problems just like the ones assigned.

A straight angle measures 180 degrees. If the first angle is 50 degrees, its supplement is 180-50 = 130 degrees

The formula for the circumferende of a circle is:  C = π·d

At the outer edge:  C  =  π·d   =  π·12  =  12π cm

A point on the outer edge travels 12π cm each revolutions, so, in 100 revolutions,  it travels

     100 times 12π = 1200π cm;        so its speed is 1200π cm/min

If you want, you can turn this into a decimal equivalent.

To find the speed at the inner edge, replace the 12 with 1.5.

Do what is inside parentheses first (absolute value bars are specialized parentheses):

- | -7 + 4 |

=  - | -3 |           Since  | -3 |  =  3:

=  - (3)

=  - 3

You look over what you learned in the unit,  make sure you get it

First, find the slope of the line:    m  =  (y2 - y1) / (x2 - x1)

x1 = 1     y1 = 4     x2 = 1     y2 = 2          --->     m  =  (2 - 4) / (1 - 1)  =  -2 / 0   <--- undefinded.

Looking at the graph of these two points, they lie in a vertical line.

The equation of a vertical line is  x  =  a, so the equation of this line is x = 1.

its the hypotheneuse :)