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3 years ago

The domain of the reltionship (3,4) (5,-1) (-11,2), (9,3) (-7,-1)?

Mathematics

2 answers:

Vedmedyk [2.9K]3 years ago

7 0

Answer:

3,5,-11,9,-7

Step-by-step explanation:

The domain is the x values

IRISSAK [1]3 years ago

4 0

Answer:

3,5,-11,9,-7

Step-by-step explanation:

the domain is all the x values in a data set

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lilavasa [31]

Answer:

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Step-by-step explanation:

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3 years ago

12.what is the probability that a boy and a girl chosen randsomly will be seniors?

zhenek [66]

$\frac{\textbf{1}}{\textbf{20}}$

Step-by-step explanation:

Probability= $\frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}$

Probability for a randomly chosen girl to be senior= $\frac{\text{number of senior girls}}{\text{total number of girls}}$

Probability for a randomly chosen girl to be senior= $\frac{7}{8+11+9+7}=\frac{7}{35}=\frac{1}{5}$

Probability for a randomly chosen boy to be senior= $\frac{\text{number of senior boys}}{\text{total number of boys}}$

Probability for a randomly chosen girl to be senior= $\frac{9}{10+7+10+9}=\frac{9}{36}=\frac{1}{4}$

For two independent events,

Probability for both event 1 and event 2 to take place= $\text{probability of event 1} \times \text{probability of event 2}$

Since choosing boys and girls is independent,

Probability for both boy an girl chosen to be senior= $\text{probability for boy to be senior}\times\text{probability for girl to be senior}$

Probability for both boy and girl chosen to be senior= $\frac{1}{5} \times \frac{1}{4} = \frac{1}{20}$

So,required probability is $\frac{1}{20}$

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3 years ago

Evaluate the following expression 4×[1+(19+26)÷9]

KatRina [158]

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Sanji scored 125 points in the first round of a video game and 263 points in the second round. His total score after the third r

GaryK [48]

Sanji scored 44 points more in the third round than in the first round.

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2 years ago

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Answer:

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Step-by-step explanation:

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1 year ago

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