u = 10.4 and v = 12
Solution:
In the given 2 sides of a triangle are 60°, 60°.
Sum of all the angles of a triangle = 180°
60° + 60° + third angle = 180°
⇒ third angle = 180° – 60° – 60°
⇒ third angle = 60°
All angles are equal, therefore the given triangle is an equilateral triangle.
⇒ All sides are equal in length.
⇒ v = 12
The line drawn from the top angle divides the triangle into two equal parts
and the line is perpendicular.
12 ÷ 2 = 6
Using Pythagoras theorem,

⇒ 
⇒ 
⇒ 
⇒ 
⇒ u = 10.4
Hence, u = 10.4 and v = 12.
Answer: 44 shirts were a size medium
To find this answer...
We know that 80 T shirts are equal to 100% of the the T shirts
To find 55% of 80, we could cross multiply
80 ?
------ -----
100% 55%
1. We multiple 80 by 55 to get 4,400
2. We divide 4,400 by 100 to get 44
3. 44 is 55% of 80
Hope this helps!
ANSWER
My answer is in the photo above
Answer:
The first is 0.046 and the second is 0.033
Step-by-step explanation: