3 years ago

URGENT easy math multiple choice

Mathematics

2 answers:

Katyanochek1 [597]3 years ago

6 0

Answer:

C) x = -1

Step-by-step explanation:

I graphed the equation below on the graph.

If this answer is correct, please make me Brainliest!

Svetradugi [14.3K]3 years ago

6 0

Answer:

Step-by-step explanation:

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In a clinical trial of a cholesterol drug, 321 subjects were given a placebo, and 7% of them developed headaches. For such ra

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Answer: The value of n is 321.

Step-by-step explanation:

Since we have given that

Sample size = 321

Percentage of them developed headaches = 7%

So, the value of p would be

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Now, the value of q would be

$q=1-p\\\\q=1-0.07\\\\q=0.93$

And the mean for the number of subjects who develop headaches would be

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and the standard deviation would be

$\sigma=\sqrt{npq}\\\\\sigma=\sqrt{321\times 0.07\times 0.93}\\\\\sigma=4.571$

Hence, the value of n is 321.

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3 years ago

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son4ous [18]

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A^2 + 4 = 100
A^2 = 96
A = square root of 96 - about 9.8 m

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3 years ago

he Laser family went to the movie theater. Tickets were $7.50 each, a bag of popcorn was $3.50, and a soda was $2.00. How much w

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Answer:

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Step-by-step explanation:

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Using PEMDAS you start with parenthesis

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Step-by-step explanation:

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