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AlexFokin [52]
3 years ago
13

What is the quadratic formula

Mathematics
2 answers:
LUCKY_DIMON [66]3 years ago
7 0

Answer:

x = -b +or- the square root of (b^2-4ac) ALL / 2a

sing to "pop goes the weasel" lol

kodGreya [7K]3 years ago
6 0

Answer: A

Step-by-step explanation:

The quadratic formula is x = -b ± √b^2 - 4ac divided by 2a. I can't write it down using text but I hope this helps.

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Hatshy [7]

Answer:

Step-by-step explanation:

The formula for determining confidence interval is expressed as

Confidence interval

= mean ± z × s/ √n

Where

z is the value of the z score

s = standard deviation

n = sample size

a) The 95​% confidence level has a z value of 1.96

The 99​% confidence level has a z value of 2.58

Since 99​% confidence level z value is greater than 95​% confidence level z value, if we input it into the formula, it will result to a higher confidence interval. So changing from a 95​% confidence level to a 99​% confidence level would make a confidence interval wider.

b) The √15 is smaller than the √350. This means that if we make use of the formula, √350 will give a lower confidence interval than that of √15. Therefore, the confidence interval would be narrower changing from a sample size of 15 to a sample size of 350.

c) Applying the formula, a standard deviation of 15 pounds would result to a lower confidence interval than a standard deviation of 20 pounds. Therefore, the confidence interval would be wider changing from a standard deviation of 15 pounds to a standard deviation of 20 pounds.

3 0
3 years ago
3x=5 (greater or less than one whole)
exis [7]

Answer:

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4 0
3 years ago
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nadya68 [22]

Answer:

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Step-by-step explanation:

Marias suitcase is heavier as 1600 grams to kg is 1.6kg which is less than Marias suitcase which weighs 14kg hope this helps:)

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2 years ago
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timurjin [86]

Answer: angle 1=129 degrees

Step-by-step explanation:

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51+99+30=180

angle 1 is supplementary to the angle that is 51 degrees so it would be 129 degrees. 180-51=129

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Step-by-step explanation:

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