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Margaret [11]
4 years ago
8

Three times David's age plus 3 is Mark's age. What is David's age?

Mathematics
1 answer:
marishachu [46]4 years ago
8 0
If we say that David's age is X

you multiply X by three and then you add three. This becomes:
3x + 3
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In a clothing store, 65% of the customers buy a shirt, 30% of the customers
diamong [38]

Answer:

75%

Step-by-step explanation:

List out known probabilities

\Pr(shirt) = 0.65 = \frac{65}{100} = \frac{13}{20}\\ \Pr(pants) = 0.40 = \frac{30}{100} = \frac{6}{20}\\\Pr(shirt \cap pants) = 0.20 = \frac{20}{100}=\frac{1}{5}

recall equation

\Pr(A \cup B)=\Pr(A)+\Pr(B)-\Pr(A \cap B)

Plug in values

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3 years ago
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FinnZ [79.3K]
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It says the circumference is pi/2; so undo that by using the circumference formula to solve for r(radius);

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(When something crosses itself out it becomes a 1)
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Now use the r you have in the area formula.
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(1/16th if pi is the same as pi divided by 16)

.0625pi=pi/16
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