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Naily [24]
3 years ago
11

Y+12=-50 ASAP help PLEASE!!

Mathematics
2 answers:
alukav5142 [94]3 years ago
5 0

Answer:

y = -62

Step-by-step explanation:

Subtract 12 from both sides:

y + 12 - 12 = -50 - 12

y = -62


So therefore, that is how you found your answer: y = -62

murzikaleks [220]3 years ago
4 0
Y+12=-50 y=-62

To solve

Subtract 12 from each side of the equation

y=-62











Y=-62
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The first option is the one!

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which shows one way to determine the factors of 12x^3 - 2x^2 + 18x - 3 by grouping? A) 2x^2(6x - 1) + 3(6x - 1) B) 2x^2(6x - 1)
Eva8 [605]

Answer:

2x^2(6x - 1) + 3(6x - 1)

Step-by-step explanation:

Given

12x^3 - 2x^2 + 18x - 3

Required

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3 years ago
An article suggested that yield strength (ksi) for A36 grade steel is normally distributed with μ = 42 and σ = 5.5.
alexandr1967 [171]

Answer:

a)P( X

We want this probability:

P( X >64)

And using the z score formula given by:

z = \frac{x -\mu}{\sigma}

We got:

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b) For this part we want to find a value a, such that we satisfy this condition:

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If we use condition (b) from previous we have this:

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Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

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Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(42,25.5)  

Where \mu=42 and \sigma=5.5

And we want this probability:

P( X

And using the z score formula given by:

z = \frac{x -\mu}{\sigma}

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We want this probability:

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And using the z score formula given by:

z = \frac{x -\mu}{\sigma}

We got:

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Part b

For this part we want to find a value a, such that we satisfy this condition:

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If we use condition (b) from previous we have this:

P(X  

P(z

But we know which value of z satisfy the previous equation so then we can do this:

z=0.674

And if we solve for a we got

a=42 +0.674*5.5=45.707

So the value of height that separates the bottom 75% of data from the top 25% is 45.707.  

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Morgarella [4.7K]

Answer:

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