2 years ago

How to do the discriminant and the quadratic formula?

Mathematics

1 answer:

aivan3 [116]2 years ago

8 0

Answer:

Quadratic formula (see image)

Step-by-step explanation:

Discriminant: $b^2-4ac$

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Literal equations 2x-3y=8 solve for y

vichka [17]

2x-3y = 8

Add 3y on both sides

2x = 8 + 3y

Subtract 8 on both sides

3y = 2x - 8

Divide 3 on both sides

$y= \frac{2}{3}x- \frac{8}{3}$

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3 years ago

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For any nonnegative real number c,(_/c)^2=_____.

Hunter-Best [27]

Answer:

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Lubov Fominskaja [6]

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3 years ago

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The daily high temperature on October 31 in a certain city is normally distributed with µ = 50 and σ = 8 . What is the probabili

tatyana61 [14]

Answer:

0.5328

Step-by-step explanation:

µ = 50

σ = 8

We are supposed to find the probability that the high temperature on October 31 in a randomly chosen year will be between 46 degrees and 58 degrees

$P(46 < x< 58)$

Formula : $Z=\frac{x-\mu}{\sigma}$

at x = 46

$Z=\frac{46-50}{8}$

$Z=-0.5$

Refer the z table for p value

p value = 0.3085

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$Z=\frac{58-50}{8}$

$Z=1$

Refer the z table for p value

p value = 0.8413

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Hence the probability that the high temperature on October 31 in a randomly chosen year will be between 46 degrees and 58 degrees is 0.5328

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Step-by-step explanation:

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