# Geometry

posted by .

Solve for x

5/3 / 4/3 = x / 20/9
x= 25/9 =2.77777....

5/4 = x/3
x= 15/4 = 3.75

20/36 / 21/x
x= 189/5 = 37.8

x/6 = x+1 / 9
x= 2

Tell whether the lines are parallel based on the given proportions
(I think they are supposed to come out equal in order for the lines to be parallel)

16/4 = 8/2
32=32
yes, the lines are parallel

10/4 = 12.5 / 5
50 does not equal 5.1, therefore no, the lines are not parallel

15/34 = 16/35
525 does not equal 544, therefore no, the lines are not parallel

12/9 = 20/15
180=180
yes, the lines are parallel

• Geometry -

yes, except

20/36 / 21/x
x= 189/5 = 37.8

seems to have a typo, no original equation

## Similar Questions

1. ### chemistry

Temp - 650 Pressure - 760mm Hg mass - 0.927g volume - ?
2. ### chem

Consider a Carnot engine operating between the temperatures of 300. K and 189 K. Find the efficiency of this engine. Assume, now, that the isothermal step at 300. K is not reversible and the expansion takes place against a constant …
3. ### math

I am doing something wrong when I work this question. Can someone show me the steps. I have the answer. x<5.189 The sum of the costs in parts a and c is less than \$120. Write and solve an inequality to determine the possiblities …
4. ### Math

Find a1 in a geometric series for which Sn=189,r=1/2,and an=3. Sn=a1(1-r^n)/1-r 189=a1(1-1/2^3)/1-1/2 189=a1(-.5)/.5 189/-.25 a1=-756
5. ### Geometry

Find the values of the variable x in the following proportions 5/3 / 4/3 = x / 20/9 x= 25/9 =2.77777.... 5/4 = x/3 x= 15/4 = 3.75 20/36 / 21/x x= 189/5 = 37.8 Are my answers correct?
6. ### Geometry repost

"yes, except 20/36 / 21/x x= 189/5 = 37.8 seems to have a typo, no original equation" There was a typo, it should have been: 20/36 = 21/x x= 189/5 = 37.8 So is this correct?
7. ### MATH

1.32 + 0.987 + 3.07 = a-4.089 b-5.089 c-5.189 d-6.189 e-13.972 answer-5.089