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3 years ago

How do you solve 5x +x

Mathematics

2 answers:

Georgia [21]3 years ago

6 0

5x = x+x+x+x+x
So just add another x to make it
6x
x+x+x+x+x+x

34kurt3 years ago

4 0

If you are just simplifying it it would be 6x because it's 5x plus one more x but if you are trying to find x then I have no idea

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In a recent study on world happiness, participants were asked to evaluate their current lives on a scale from 0 to 10, where 0

Zigmanuir [339]

Answer:

a) 8.2962

b) 6.3956

c) 3.845

Step-by-step explanation:

Z-score:

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.

In this question, we have that:

$\mu = 5.6, \sigma = 2.6$

(a) What response represents the 85th percentile? 

This is X when Z has a pvalue of 0.85. So X when Z = 1.037.

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

$1.037 = \frac{X - 5.6}{2.6}$

$X - 5.6 = 2.6*1.037$

$X = 8.2962$

(b) What response represents the 62nd percentile?

This is X when Z has a pvalue of 0.62. So X when Z = 0.306.

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

$0.306 = \frac{X - 5.6}{2.6}$

$X - 5.6 = 2.6*0.306$

$X = 6.3956$

(c) What response represents the first quartile?

The first quartile is the 100/4 = 25th percentile. So this is X when Z has a pvalue of 0.25, so X when Z = -0.675.

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

$-0.675 = \frac{X - 5.6}{2.6}$

$X - 5.6 = 2.6*(-0.675)$

$X = 3.845$

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3 years ago

Trey has three pairs of Vans, two pairs of Nikes, and four pairs of Adidas shoes in his shoe bin. One morning, the electricity w

larisa86 [58]

Answer: A) 40%

B)30%

Step-by-step explanation:

A) becase 4/9 as a percentage is 0.444444% and I rounded it to 0.4% then turned it into 40% cause its outta 100

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3 years ago

Drag each tile to the correct box. Not all tiles will be used. One solution each is given for four quadratic equations. Assuming

lorasvet [3.4K]

A because i said so haha no

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3 years ago

Determine the domain and range of (g ○ f)(x) if f of x is equal to 4 over the quantity x squared minus 4 end quantity and g(x) =

lara [203]

The domain and range of a function are the possible x and y values of the function.

The domain and the range of the function is: (a) $\mathbf{D:\{x \in R|x \ne -2,2\}}$ and $\mathbf{R:\{(-\infty,1) \cup (2,\infty)\}}$

The functions are given as:

$\mathbf{f(x) = \frac{4}{x^2 - 4}}$

$\mathbf{g(x) = x + 2}$

(g o f)(x) is calculated as:

$\mathbf{(g\ o\ f)(x) = g(f(x))}$

So, we have:

$\mathbf{(g\ o\ f)(x) = \frac{4}{x^2 - 4} + 2}$

Take LCM

$\mathbf{(g\ o\ f)(x) = \frac{4 + 2x^2 - 8}{x^2 - 4} }$

$\mathbf{(g\ o\ f)(x) = \frac{2x^2 - 4}{x^2 - 4} }$

Represent the denominator as follows, to calculate the domain

$\mathbf{x^2 - 4 \ne 0 }$

Add 4 to both sides

$\mathbf{x^2 \ne 4 }$

Take square roots of bot sides

$\mathbf{x \ne \±2 }$

Hence, the domain of the function is:

$\mathbf{D:\{x \in R|x \ne -2,2\}}$

On the graph of $\mathbf{(g\ o\ f)(x) = \frac{2x^2 - 4}{x^2 - 4} }$ (see attachment), the function does not have a value from y = 1 to 2.

Hence, the range is:

$\mathbf{R:\{(-\infty,1) \cup (2,\infty)\}}$

Read more about domain and range at:

brainly.com/question/1632425

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2 years ago

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triangle M is similar to triangle N . Triangle M has 2 angles with measures of 32 degrees and 93 degrees . Which 2 angles could

Llana [10]

From the wording of the question ... especially the word "which" ...
I understand that the question includes some answer choices, which
you decided not to share with us.

OK. So be it. Here are all the pairs of angles that could be included
in triangle-N:

-- 32°, 93°
-- 32°, 55°
-- 93°, 55°

6 0

3 years ago