Can some help me out with this problem please ?
2 answers:
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Answer:
Read the explanation!
Step-by-step explanation:
<em>Let the "certain number" be </em><em>. </em>
( is a symbol for multiplication).
<em>Create a few equations and expressions:</em>
The sum of 12 and a certain number:
The product of 3 and the number:
The sum of 12 and a certain number is equal to the product of 3 and the number:
=
Solve!
12=3x-x
12=2x
x=6
Answer:
9.847 %
Step-by-step explanation:
Be p1 the probability that the mammogram detect breast cancer in a woman.
p1=81%.
The probability 'P' that independent and consecutive 'n' singular events with p probability occur is:
In this case:
P: Probability that breast cancer be detected on 11 women with breast cancer.
%