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yuradex [85]
3 years ago
6

If x=7 and y=−2, evaluate the following expression:3x+4y ​

Mathematics
2 answers:
GenaCL600 [577]3 years ago
6 0

Answer:

3×7+4×-2

21-8

=13

Step-by-step explanation:

the answer is 13

12345 [234]3 years ago
4 0

Answer:

Step-by-step explanation:

when x = 7 and y = - 2

3x + 4y

= 3 * 7 + 4 * (-2)

= 21 - 8

= 13

Hope it helps :)

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Step-by-step explanation:

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My homework is due soon, help!!
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Lina20 [59]

Answer:

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Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for population proportion <em>P</em> is:

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<em>x</em> = number of students who responded as"yes" = 70

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The formula to compute the sample proportion is:

p=\frac{x}{n}

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