Answer:
The answer to your question is Area = 62.5 u²
Step-by-step explanation:
Area = 
a and b are bases
c = heigth
dAD = 
dAD = 
dAD = 
dAD = 
dAD = 
dAD = 20 u
dBC = 
dBC = 
dBC = 
dBC = 5 u
dAB = 
dAB = 
dAB = 
dAB = 
dAB = 5u
Area = 
Area = 
Area = 5(12.5)
Area = 62.5 u²
1 is 3/3. 3/3 + 1/3 = 4/3.
Usually, cubes have 6 sides on them, so the chances of first rolling either 3 or a 4 is 1/3th of a chance. Then, if she rolls it 39 times, I'd do 1/3 of 39, and get 13. She can expect 13 times to roll a 3 or a 4.
Answer:
52-13b
Step-by-step explanation:
(6+7)(4-b)=13(4-b)
=52-13b