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The truck bed is 40cm .
<h3>What is a right-angled triangle?</h3>
A right-angled triangle is a triangle with one of its angle 90°.
Analysis:
The ramp, the height of the truck bed from ground and the distance of truck bed to the point the ramp makes contact with the ground form a right angle triangle.
So that sin 30 = height of truck bed above ground/length of ramp
sin 30 = height/80
height of the truck = 0.5 x 80 = 40cm
Learn more about right-angled triangle: brainly.com/question/64787
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The answer is 23/40 . Hope this helps
Hi,
y+2=-1/2(x-2) ==>y=-x/2-1.
The slope (if this is right) : 2*s=-1==>s=-1/2
