3 years ago

Ugh need help with this

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

8 0

Answer:

i have no idea

Step-by-step explanation:

almond37 [142]3 years ago

7 0

-9x - 2
-9 (7) - 2
-63 - 2
-65

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A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than ex

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Answer:

Standard error (S.E) = 0.048 ≅ 0.05

Step-by-step explanation:

<u>Explanation</u>:-

Given sample size 'n'=76

Given the dean who randomly selects 76 students and finds that 58 out of 76 are receiving financial aid.

Sample proportion

$p = \frac{x}{n} = \frac{58}{76} = 0.7631$

The standard error is determined by

$S.E = \sqrt{\frac{p(1-p)}{n} }$

$S.E = \sqrt{\frac{0.763(0.2369}{76} }$

Standard error is 0.048 ≅ 0.05

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3 years ago

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3 years ago

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Step-by-step explanation:

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3 years ago

Which is equivalent to the following expression? (2x^2+4xy-y^2)+(x^2+3xy-y^2)

Karo-lina-s [1.5K]

Answer C : 3x^2+7xy-2y^2

equivalent to the following expression

$(2x^2+4xy-y^2)+(x^2+3xy-y^2)$

$2x^2+4xy-y^2+x^2+3xy-y^2$

Combine like terms

$2x^2+x^2+4xy+3xy-y^2-y^2$

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Answer C is correct

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4 years ago

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