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here we go..

Quote:x/2 - 1/10 = x/6 + 1/2

We have to find the value of x
So taking x terms on left hand side and numerals on the right hand side

x/2-x/6=1/2+1/10
Taking 6 as lcm on left hand side and 10 on right hand side

2x/6 = 6/10
x=6*6/10*2 = 1.8 answer

Quote:4/5n = 3n+4

We have to find the value of n here, i hope that in question n is in denominator on the left hand side

In case n is in numerator the solution would be different

Cross multiply
4=5n(3n+4)
Solving
4=15n^2+20n

or 15n^2+20n-4=0

This is the quadratic in n now just solve it using quadratic forumula

Ask me in case you have problem with this

Quote:After a 20% reduction in price, it sells for $320.00.

What is the original price...(i need the equation)

Let original price be x

x-x20/100 = 320
4x/5=320 is the equation now you can do what ever you want

Quote:3. Solve and graph

2y-5 <5y-11

Taking y terms to RHS and numerals to left hand side
11-5<5y-2y
6<3y
3<y

or y>3 so mark the line y=3 and all the area above this shows the area for the graph

Quote: length of a rectangle...the width is 15in and perimeter 62in.

Perimet = 2(L+B)
62=2(L+15)
31=L+15
L=31-15 =16

hope this helps

I also need help with

1. 4/5n = 3n+4

2.After a 20% reduction in price, it sells for $320.00.

What is the original price...(i need the equation)

3. Solve and graph

2y-5 <5y-11

4. length of a rectangle...the width is 15in and perimeter 62in.