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2 years ago

Can someone who isn’t a bot answer this for me. If I see a link or file I’ll delete this god forsaken app.

Mathematics

2 answers:

lara31 [8.8K]2 years ago

4 0

Answer: √62 goes down the path √62 and 45° goes down path up

Step-by-step explanation:

IRINA_888 [86]2 years ago

4 0

Answer:

2√31

Step-by-step explanation:

Here,

The type of triangle is right angled triangle.

Given,

θ = 45

Hypotenuse = x

Opposite side = √62

To find : x = ?

Formula : -

sin θ = Opposite side / Hypotenuse.

Note : -

The value of sin 45 = 1 / √2

sin 45 = √62 / x

1 / √2 = √62 / x

x = √62 * √2

( √62 = √31 * √2 )

x = √62 * √2

= √31 * √2 * √2

= √31 * 2

x = 2√31

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A rectangle has side lengths (2x-5) meters and (2x+6) meters. Write a linear expression in simplest form to represent the perime

RideAnS [48]

I’m pretty sure the answer is 12 expresion

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2 years ago

The dimensions of a rectangle can be given by x+7 and x+2. If the area of the rectangle is 66 square inches, what are the dimens

Nadusha1986 [10]

to solve for the dimensions (x+7)(x+2)=66,

we can first use the foiling method to simplify the left side.

x^2 + 2x + 7x + 14 = 66

x^2 + 9x + 14 = 66

now, subtract 66 from both sides.

x^2 + 9x - 52 = 0

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(x + 13)(x - 4)

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2 years ago

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beks73 [17]

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2 years ago

Read 2 more answers

Find the 64th term of the following arithmetic sequence. 17, 26, 35, 44, ...

goblinko [34]

take the difference

26-17=9

35-26=9

the first term is 17

and the nth term is 64

use the formula

tn=a+(n-1) d

let a be 17

let n be 64

let d be 9

then you substitute

t64=17+(64-1)9

=17+(63)9

=17+567

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8 0

3 years ago

The results of a common standardized test used in psychology research is designed so that the population mean is 155 and the sta

galina1969 [7]

Answer:

The value 155 is zero standard deviations from the [population] mean, because $\\ x = \mu$ , and therefore $\\ z = 0$ .

Step-by-step explanation:

The key concept we need to manage here is the z-scores (or standardized values), and we can obtain a z-score using the next formula:

$\\ z = \frac{x - \mu}{\sigma}$ [1]

Where

z is the z-score.
x is the raw score: an observation from the normally distributed data that we want standardize using [1].
$\\ \mu$ is the population mean.
$\\ \sigma$ is the population standard deviation.

Carefully looking at [1], we can interpret it as the distance from the mean of a raw value in standard deviations units. When the z-score is negative indicates that the raw score, x, is below the population mean, $\\ \mu$ . Conversely, a positive z-score is telling us that x is above the population mean. A z-score is also fundamental when determining probabilities using the standard normal distribution.

For example, think about a z-score = 1. In this case, the raw score is, after being standardized using [1], one standard deviation above from the population mean. A z-score = -1 is also one standard deviation from the mean but below it.

These standardized values have always the same probability in the standard normal distribution, and this is the advantage of using it for calculating probabilities for normally distributed data.

A subject earns a score of 155. How many standard deviations from the mean is the value 155?

From the question, we know that:

x = 155.
$\\ \mu = 155$ .
$\\ \sigma = 50$ .

Having into account all the previous information, we can say that the raw score, x = 155, is zero standard deviations units from the mean. The subject earned a score that equals the population mean. Then, using [1]:

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

$\\ z = \frac{155 - 155}{50}$

$\\ z = \frac{0}{50}$

$\\ z = 0$

As we say before, the z-score "tells us" the distance from the population mean, and in this case this value equals zero:

$\\ x = \mu$

Therefore

$\\ z = 0$

So, the value 155 is zero standard deviations from the [population] mean.

5 0

3 years ago