Answer:
Approximate answer: 
Step-by-step explanation:
Denote the projection of point 
onto side 
as 
.
.
Next we should put everything together in area formula for trapizium:
Answer: 480
Step-by-step explanation: I want to say take 60 and 8 and times them together which will give you 480. but then again if you take 60 and divide it by 8 you get 7.5 so if the answer is not 480 then it has to be 7.5.
Hope this helps :)
When setting compensation, it is generally better to use the median as opposed to the mean for a simple reason: the mean or average is very sensitive to outliers (abnormally low or high values), while the median is much less affected by outliers.
Let's start from the area formula. The area can be found with: A = 0.5bh, where b is the base and h is the height.
Well, let's just plug in the values and solve for h instead:
127.5 =0.5(17)h
127.5 = 8.5h
h = 15
I got the height of this triangle is 15, but it is always helpful to double check work. Hope this helps!
Answer:
CD = 20°
Step-by-step explanation:
arc FA = arc CD because <ABF = <CBD (vertical angles)
Given <ABF = 20° so <ABF = <CBD = 20°
The central angle is also known as the arc's angular distance
so arc CD = <CBD = 20°
