Step-by-step explanation:
2y + z = 13
2x + z = 11
x + y + z=12
x= -1
y= 0
z= 13
The roots of the function f(x) = x2 – 2x – 3 are shown. What is the missing number?
1 answer:
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Answer: 680
Step-by-step explanation:
When order doesn't matter,then the number of combinations of choosing r things out of n =
Given: Total participants = 17
From these, a group of 3 participants is to be tested under a special condition.
Number of groups of 3 participants chosen =
Hence, there are 680 groups of 3 participants can be chosen,.
Answer:
There is a 90.32% probability that the cake was baked by Doug.
Step-by-step explanation:
We have these following probabilities:
A 70% probability that Doug bakes the cake.
A 30% probability that Jeremy bakes the cake.
A 40% probability that a cake baked by Doug gets a thumbs up.
A 10% that a cake baked by Jeremy gets a thumbs up.
One cake was selected at random on 10/01/2014 and got a "thumbs up".
1. Find the probability that the cake was baked by Doug.
The probability that a baked cake gets a thumbs up is:
Of those, 0.7*0.4 = 0.28 are baked by Doug.
So the probability is:
There is a 90.32% probability that the cake was baked by Doug.