+0

# help with geometry

0
36
4

Find y.  Simplify completely.

Nov 12, 2020

#1
+452
+3

y / 20 = 4 / y

y2 = 80

y = √80

Nov 12, 2020
#2
+93
+3

@AboveGuest Very clever method... I didn't even think of using similar triangles!

Expanding on the solution, $\sqrt80$ can be simplified to $4\sqrt{5}$, so the number that goes in the green box is 4.

Nov 12, 2020
#4
+452
0

Thanks!

You did something clever right here:> https://web2.0calc.com/questions/pre-cal-need-help

jugoslav  Nov 13, 2020
#3
+111600
0

It was good that you left it not quite finished too.

I like that Eternity bought my attention to your solution too.

I do not think of similar figure solutions as often as I should.  It is good to get reminders of them.

Nov 12, 2020
edited by Melody  Nov 12, 2020
edited by Melody  Nov 12, 2020
edited by Melody  Nov 12, 2020