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kakasveta [241]
3 years ago
12

X y

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
3 0

Answer:

If x = 3y and 3y = x, then y = 1/3x.

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Help me please i do not understand it.
sergij07 [2.7K]
Answer:y = 2x + 4

Explanation:

1) The slope - intercept form is of the kind y = mx + b, where m is the slope and b is the y-intercept.

2) Given two points you can find the slope (using the two points) and then the equation using one of the points.

3) slope = m = Δy / Δx

points given (3,10) , (0,4)

m = [y2 - y1] / [x2 - x1] = [10 - 4] / [3 - 0] = 6 / 3 = 2

4) equation

y - y2
-------- = m
x - x2

  y - 4
---------- = 2
  x - 0

=> y - 4 = 2 (x - 0)

y - 4 = 2x

y = 2x + 4


3 0
3 years ago
An HP laser printer is advertised to print text documents at a speed of 18 ppm (pages per minute). The manufacturer tells you th
anastassius [24]

Answer:

0.288

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 normally distributed samples are solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

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 pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

In this question, we have that:

\mu = 17.48, \sigma = 3.25, n = 10, s = \frac{3.25}{\sqrt{10}} = 1.027740

Find the probability that the mean printing speed of the sample is greater than 18.06 ppm.

This is 1 subtracted by the pvalue of Z when X = 18.06. So

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

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{18.06 - 17.48}{1.027740}

Z = 0.56

Z = 0.56 has a pvalue of 0.712

1 - 0.712 = 0.288

The answer is 0.288

7 0
3 years ago
PLZ PLZ HELP ME ILL MARK BRAINLIEST AND GET A FOLLOW BUT PLZ HELP ME ​
Nesterboy [21]

Answer:

  • See below

Step-by-step explanation:

<u>Initial coordinates and transformations:</u>

  • (x, y) → (4x, 4y) → (3x, 3y)
  • A(-1, -1) → A'(-4, -4) → A''(-3, -3)
  • B(1, 1) → B'(4, 4) → B''(3, 3)
  • C(2, 0) → C'(8, 0) → C''(6, 0)
6 0
3 years ago
Read 2 more answers
Which ratio does not belong with the other three? Explain your reasoning. 4/10 2/5 3/5 6/15
JulsSmile [24]

Answer:

3/5

Step-by-step explanation:

7 0
3 years ago
Insert &lt;, &gt;, or = between the fractions to make the sentence true. <br><br> 3/4 _____ 4/7
ratelena [41]
3/4 = .75
4/7 = .57

the answer is : 3/4 > 4/7
6 0
3 years ago
Read 2 more answers
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