Thursday, March 12, 2009

1. 2x+y=6, 6-2x=y
2. 5x+y=7, 7-5x=y
3. 3x+2y=8, 8-3x=2y
4. 2x+5y=10, 10-2x=5x

horizontal axis= paralell to the horizon
origin=the point of the intersection of the x and y axis on cordinate or cartiesina plane, origin coordinates ae (0,0)
vertical axis= a right angle to the horizon
x-axis=the horizontal axis of the graph
y-axis= the vertcal axis on a graph
ordered pair=a pair of # whe3e the order is important, 4,6 is diff than 6,4, often indicate on a coordinate graph
coordinates=show pairs of letters and #, used to show position on a coordinate graph
x coordinate= the position of a point according to the x-axis
y coordinate= the position of a point according to the yaxis

Thursday, February 26, 2009

1. Find the most current U.S. population of females or males? 5,512,262 males
2. What was the U.S. population of females or males five years ago? females
3. Find the percent increase/decrease. 5,226,340-5,512,262=-285922 5.2%
4. Based on the percent increase/decrease, with a population of 1000 people, how many females or males would there have been five years ago?602 boys

5. Find the percent of 5 increase or decrease for these categories:
a) under years old Drop 4%
b) between 10-14 years old up 7.4%
c) over 85 years old. 12%

Thursday, February 19, 2009

My perfect job would be a hobo on the side of 3rd street in front of Mc Donalds. As a hobo I would need a box, therefor I will buy a plasma t.v and throw the t.v out and keep the box. The$Plasma would cost $540. My cellphone bill would cost $72 a month for calling my pet rock. It would cost 16.6% on my groceries. I would spend 13% on gas. (buying it and selling it as an energy drink.) I would have $228 left.m I would put $91.20 into my handy dandy pocket savings. I"m rich!@!@!

Saturday, December 6, 2008

1) 2x(2)+ 10x -24 *=answer
factors of 2x(2), (2x,x),
factors of -24, (-6,4), (6,-4), (-8,3), (8,-3), (12,-2), (-12,2)
(2x-6)(x+4)=-2x
(2x-4)(x+6)=8x
(2x-8)(x+3)=-2x
(2x-3)(x+8)=13x
(2x-12)(x+2)=-8x
*(2x-2)(x+12)=10x
2) 4x(2) + 20x + 25
factors of 4x(2), (2x,2x), (1x,4x), (1x,4x)
factors of 25, (5,5)
*(2x+5)(2x+5)=20x
(4x+5)(x+5)=40x
3) x(2) - x – 12
factors of x(2), (x,x)
factors of -12, (-6x,2x), (6x,-2x), (-3x,4x), (3x,-4x), (-12x,1x), (12x,-1x)
(x-6)(x+2)=-4x
(x-2)(x+6)=4x
*(x-3)(x+4)=x
(x-4)(x+3)=-x
(x-12)(x+1)=-11x
(x-1)(x+12)=11x
4) 9x(2) - 81
factors of 9x(2), (3x,3x), (9x,1x)
factors of 81, (9,9)
*(3x-9)(3x+9)=9x(2)-81
(9x-9)(1x+9)=9x(2)-90x-81
(1x-9)(9x+9)=9x(2)-72x-81

Tuesday, November 25, 2008

The area of the rug is ("r" squared x 3.14). The are of the room 4r squared. The area of the area of the room is 4r - (r squared x 3.14).

Thursday, November 13, 2008

gas prices (new)

Gas bill per week; p= price t= total
350/mpg x p = t
350/4 x 1.93 = t
87.5 x 1.93 = t
87.5 x 1.93 = 168.87
284.38-168.87=115.51 I would save $115.51!
That is a lot cheaper than what i would spend before.

Gas bill for a month;
(350/mpg)p x 4=t
350/4 x 1.9 x 4 =t
87.5 x 1.93 x 4=t
168.87 x 4 = 675.48 I would be able to spend 462.04 on different items 

Gas bill for a year;
(350/mpg)p x 4 x 12=t
(350/4)1.93 x 4 x 12=t
87.5 x 1.93 x 4 x 12=t
168.87 x 4 x 12=t
168.87 x 48= 8,105.76 I would save $5,544.48.

Gs bill for 75 years;
(35o/mpg)p x 4 x 12 x 75=t
(350/4)1.93 x 4 x 12 x 75=t
87.5 x 1.93 x 4 x 12 x 75=t
168.87 x 48 x 75=t
8,105.76 x 75=607,937    I would save $415,852 dollars for 75 years. I would still spend a lot of money but not as much.

Friday, October 31, 2008

Something I learned is that polynomials are used for many other subjects, like science, calculus, economics, chemistry, and physics. Something I understood more is that u can't combine terms that aren't like terms. The video and websites didn't teach me much but they did clear stuff up.