We have been given an equation 
that represents umber of walls, w, that Joe can paint in t hours. We are asked to find the number of hours it will take Joe yo paint 7 walls.
To solve our given problem, we will substitute 
in our given equation as:
Let us solve for t.
Therefore, it will take 
hours Joe to paint 7 walls.
Because the triangle is an equilateral triangle, you know that all of the angles are equal to 60°. That means that you can use trigonometry to find the height, which would be sin(60) × 20 = 17.32.
Again, because it is an equilateral triangle, all sides are equal as well, meaning that the base is also 20cm. To find the area of the triangle, we must do (20 × 17.32)/2 = 173.2cm^2, which is the area.
I hope this helps!
It’s 15 for #16 and then for #18 it would be 55 then for 20 it would be 6
Answer:
answer is below
Step-by-step explanation:
tan p = 32/24 = 4/3
tan q= 24/32 = 3/4
