B might be the correct answer
        
             
        
        
        
 <span>there is no horizontal displacement if he went straight up 
straight up means vertical, so his vertical displacment is 20 m</span>
        
             
        
        
        
<span>It takes heat to make something evaporate, so it takes heat from your arm. Alcohol easily evaporates at room temperature, so it feels cool. This is also why you feel cool when getting out of the pool. The water on your skin evaporates.
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The question "<span>In a redox reaction the substance that accepts electrons is said to be?" is a bit vague. By definition, a "redox" or "reduction" reaction is one where classified by a gain of electrons. On the other hand, if it is a loss of electrons, then it is an oxidation reaction.</span>
        
             
        
        
        
Answer:
Explanation:
base of triangular frame, b = 90 cm
Area, A = 765 cm² 
Let the height is h.
Area of a triangular frame = 1/2 x base x height 
765 = 0.5 x 90 x h 
h = 17 cm 
Thus, the height of triangular frame is 17 cm.