Answer:
3
Step-by-step explanation:
0.75 x ? = 15
? = 15/0.75 = 20
15% of 20 = 3
The answer is 31. 10+10+20+1=31
You would find the average of the probability for roses and daisies, which would be .98 + .94 = 1.92. Divide this by 2 to get .96. The probability of the bouquet having roses or daisies is .96.
To find A' they used the rule of multiplication, which is:
the derivative of a product of two terms is the first term times the derivative of the second term plus the second term times the derivative of the first.
To find b' they just isolated b'