Great Math minds I need your help. solve using addition and multiplication. !.

mztana820 · #1 (**permalink**) 02-24-2008, 06:35 AM

2.1x+20.8> 52.0-8.3x? 2. 8x +3- 7x <_ 13
3. Solution set is( x/x> )y-8 >-11
4. find the y-intercept and the x- intercept for the equation 3x+2y=30
5. Find slope, if it exsists y= -4x+8 and x+5y=10.
6. Solve using multiplication princple 7x > -6
_

bristolracing · #2 (**permalink**) 02-24-2008, 06:35 AM

i'll answer a couple of these for you
8x + 3 - 7x < 13
add your like terms u get
x + 3 < 13
subtract 3 from both sides to get
x < 10

im not sure what 3 says

slope interecept
y = mx + b where m is slope
y = -4x + 8 so -4 is slope
y= -1/5x + 2 solving the equation for y so -1/5 is slope

x > -6/7

Addison D · #3 (**permalink**) 02-24-2008, 06:35 AM

to the original question

2.1X+20.8>52.0-8.3X

10.4X>31.2
X>3

can you give me "Best answer" please?

darn you bristol.... stealing my chance at best answer! lol I didnt want to answer them all =(

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