Answer: 13
Step-by-step explanation:
180 - (154 + 13) = 13
the triangle is isosceles
Answer:

Step-by-step explanation:
Given


Required

First, calculate 
We have:

This gives:

Substitute 


Substitute 



Split

This gives

Answer:
x ≥ -1
Step-by-step explanation:
the red fully circle in -1 show that -1 is include
1,200 because 4x 3 is 12 and 40 x 30=1,200
Answer:
Step-by-step explanation:
You need to find the HCF of 36 and 90.
<u>Prime factors of each:</u>
<u>HCF includes all prime factors of both numbers:</u>
- HCF(36, 90) = 2*2*3*3*5 = 180