Step-by-step explanation:
using SOH CAH TOA.
h=3.46 and b=4.42
Step-by-step explanation:
452
We know in these kind of triangles that have a 90 degrees angle, we can do:

so the first question:

and then:

so , when you want to rationalize , usually you must multiply the irrational factor as 1:

so , now multiply:

in the next question,we know negative numbers in radical don't have any solution so 2 is correct,
I think the answer is 26mm because the triangles are the same, so the measurements would be the same, too.
Answer:
220
Step-by-step explanation:
Given that the freshman class has 160 students.
Each freshman must write three reports from a list of 12 novels that the teacher has assigned them to read
Here order does not matter. Hence combinations can be used.
No of available options = 12
No to be selected =3
Possible number of ways = ways of selecting 3 from 12 where order does not matter
= 
Option B is right answer.