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3 years ago

What is -7x-2y=14 solved for x

Mathematics

1 answer:

ss7ja [257]3 years ago

5 0

Answer:

$x=\frac{-1}{3}y+\frac{-7}{3}$

Step-by-step explanation:

Considering the equation

$x-7x-2y=14$

Let's solve for $x$

$x-7x-2y=14$

$Step\:1\::\:Add\:2y\:to\:both\:sides$

$-6x-2y+2y=14+2y$

$-6x=2y+14$

$Step\:2:\:Divide\:both\:sides\:by\:-6$

$\frac{-6x}{6}=\frac{2y+14}{-6}$

$x=\frac{-1}{3}y+\frac{-7}{3}$

Therefore, $x=\frac{-1}{3}y+\frac{-7}{3}$

Keywords: equation, solve for x

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Step-by-step explanation:

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3 years ago

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lilavasa [31]

Answer:

<h3>2min/customer</h3>

Step-by-step explanation:

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Assume that blood pressure readings are normally distributed with a mean of 115 and a standard deviation of 8. If 100 people are

Sergeu [11.5K]

Answer:

D. 0.9938.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution

Problems of normal distributions can be solved using the z-score formula.

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$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

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