Lawrence Perez, from Saddleback College, and his assistant Charlie, give this beginningalgebra lesson on word problems (or applications) with equations of rational expressions. If you like math, and you like English, than what's the problem?
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1 Comment
I need help with my home work, is 1 am and still dont get it, please please help me with Simplifying rational expressions?
1) 5/2x
3) x/x8
5) 3/15x20
Problem 7.2,
3) 1+2/9
9) x^2+9x+14/x+7*x/x+2
37) 15/x/3/2x
Problem 7.3,
1) 7x/13+2x/13
3) 8x/15+x/15
55) 3x/x72x5/7x
Problem 7.4
1) 7/15x^2+13/24x
3) 8/15x^2+5/6x^5
5) 4/x3+7/x+1
Problem 7.5, (1; 5; 14)
1) 1/2+1/4/1/2+1/3
5) 2/51/3/2/33/4
14) 1/y3/4/1/y+2/3
Problem 7.6, (1; 7; 8)
1)x/3=x/22
7) 2/x+1/3=4/x
8) 5/x+1/3=6/x
Problem 7.7, (37; 40; 49)
37) What is proportion? Give an example with your description.
40) What are corresponding angels in similar triangle?
49) Ben can prepare a company report in 42 hours. How long will take them working together to prepare four company reports?
Problem 7.8 (1; 3; 17)
1) y varies directly as x. y=65 when x=5 find y when x = 12.
3. y varies inversely as x. y=12 when x=5, find y when x=2.
17. A varies jointly as z and the sum of y and x.
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