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4 years ago

A=9y+3yx Solve for y

Mathematics

2 answers:

algol134 years ago

7 0

A = y(9 + 3x) factor y out of 9y+3yx, then devided both sides by (9+3x)
A/(9+3x) = y

andre [41]4 years ago

3 0

Answer:

$y=\frac{A}{(9+3x)}$

Step-by-step explanation:

we have

$A=9y+3yx$

Solve for y

That means -----> isolate the variable y

Step 1

Factor the variable y in the right side

$A=y(9+3x)$

Step 2

Divide by $(9+3x)$ both sides

$A/(9+3x)=y(9+3x)/(9+3x)$

Step 3

Simplify

$y=\frac{A}{(9+3x)}$

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The sum of the roots of 3x 2 + 11x - 4 = 0 is<br><br> -11/3<br> -4/3<br> 11/3<br> 4/3

givi [52]

Answer:

The correct option is 1.

Step-by-step explanation:

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$ax^2+bx+c=0$ .... (1)

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Read 2 more answers

A particular battery claims to have a mean life of 400 hours with a standard deviation of 30 hours. Approximately what percent o

Svetach [21]

Using the normal distribution, it is found that 25.14% of the batteries will last more than 420 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean $\mu$ and standard deviation $\sigma$ is given by:

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

The z-score measures how many standard deviations the measure is above or below the mean.

Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, we have that the mean and the standard deviation are given, respectively, by:

$\mu = 400, \sigma = 30$ .

The proportion of the batteries will last more than 420 hours is <u>one subtracted by the p-value of Z when X = 420</u>, hence:

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

$Z = \frac{420 - 400}{30}$

Z = 0.67

Z = 0.67 has a p-value of 0.7486.

1 - 0.7486 = 0.2514.

0.2514 = 25.14% of the batteries will last more than 420 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

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