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aliya0001 [1]
3 years ago
10

QUICK HELP PLEASE Change the percent to a fraction or mixed number. Simplify. 69​%

Mathematics
2 answers:
rusak2 [61]3 years ago
6 0

Answer:

69% to a simplified fraction is 69/100

JulsSmile [24]3 years ago
6 0

decimal is 0.69 and fraction is 69/100

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In a class of 28 students, 11 have a brother and 9 have a sister. There are 2 students
Westkost [7]

Answer:

\displaystyle P(A\mid B)=\frac{2}{11}

Step-by-step explanation:

<u>Conditional Probability</u>

Is a measure of the probability of the occurrence of an event, given that another event has already occurred. If event B has occurred, then the probability that event A occurs is given by:

{\displaystyle P(A\mid B)={\frac {P(A\cap B)}{P(B)}}}

Where P(A\cap B) is the probability that both events occur and P(B) is the probability that B occurs.

Let's define events A and B for the question. There are 11 students that have a brother and 9 that have a sister. Two of those students have a brother and a sister.

We are given the fact that the selected student has a brother: this is the event that has already occurred, thus:

B = A student has a brother

A = A student has a sister

The probability that a student has a brother is:

\displaystyle P(B)=\frac{11}{28}

The probability that the student has a brother and a sister is:

\displaystyle P(A\cap B)=\frac{2}{28}

Thus, the conditional probability is:

{\displaystyle P(A\mid B)={\frac {\frac{2}{28}}{\frac{11}{28}}}}

Simplifying:

\mathbf{\displaystyle P(A\mid B)=\frac{2}{11}}

4 0
3 years ago
Please help me with this problem!
NNADVOKAT [17]

1. <A= sin a/c

= sin 26/31

=sin 0.8387=57degree

<A= 57degree

2.<B= cos a/c

= cos 26/31

= cos 0.8387=33degree

<B = 33degree

3.<em><u><</u></em><em><u>C</u></em><em><u>=</u></em><em><u>9</u></em><em><u>0</u></em><em><u> </u></em><em><u>degree</u></em> cause it already gave us the sign of perpendicular sign

4. B=(c^2 - a^2)square root

=(31^2-26^2)square root

=(961-676)square root

=(285)square root

B=

<em>\sqrt{285}</em>

<em>if</em><em> </em><em>you</em><em> </em><em>have</em><em> </em><em>a</em><em> </em><em>question</em><em> </em><em>ask</em><em> </em><em>me</em><em> </em><em>in</em><em> </em><em>private</em><em> </em><em>or</em><em> </em><em>comment</em><em> </em><em>chat</em>

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Find each rate and unit rate.
Georgia [21]

Answer:

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Step-by-step explanation:

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Your answer is 6.643 kg

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Hope this helps!
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