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What is the probability that a point randomly chosen in the large triangle is also in Region A?

 

about 17%

about 31%

about 44%

about 61%

 Nov 19, 2019
 #1
avatar+105370 
+2

Area of large triangle  = (1/2)(base) ( height)  + (1/2) (12)(6)  = (1/2) (72)  = 36

 

Area of region B = (1/2) (base) (height)  = (1/2)(10) (5) = (1/2)(50)  = 25

 

Probability  that  a point chosen in the large triangle is also in A  =

 

 

[ Area of Large Triangle ] - { Area of Region B ]

_________________________________________   =

               Area of Large Triangle 

 

[ 36  - 25 ]         11

________  =   ____ ≈  .305  ≈ 30.5%  ≈  31%

     36                 36

 

 

cool cool cool

 Nov 19, 2019

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