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3 years ago

Select the correct answer

Mathematics

2 answers:

xxMikexx [17]3 years ago

5 0

Answer:

Option B. 220

Step-by-step explanation:

Let

x ----> the number of student tickets sold

y ----> the number of adult tickets sold

we know that

$x+y=360$

$y=360-x$ ----> equation A

$3x+5y=1,360$ ----> equation B

Solve the system by substitution

substitute equation A in equation B

$3x+5(360-x)=1,360$

solve for x

$3x+1,800-5x=1,360$

$5x-3x=1,800-1,360$

$2x=440$

$x=220\ student\ tickets$

Tju [1.3M]3 years ago

5 0

Answer:

220 for sure guys

Step-by-step explanation:

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3 years ago

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4 years ago

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Aleonysh [2.5K]

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3 years ago

A computer manufacturing company has sent a mail survey to 2,800 of its randomly selected customers that have purchased a new la

vodka [1.7K]

Answer:

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We have to calculate a 96% confidence interval for the proportion.

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The critical z-value for a 96% confidence interval is z=2.054.

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The 96% confidence interval for the population proportion is (0.77, 0.83).

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3 years ago