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2 years ago

X/9 = 8 step to step

Mathematics

1 answer:

ollegr [7]2 years ago

5 0

Answer:

x=72

Step-by-step explanation:

Multiply both sides by 9 (x=8 times 9)

- = 8

Let x = 72

_ =8

8=8

Therefore x =72

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Find the mean and standard deviation for the set of data.

dem82 [27]

The mean and standard deviation for the set of data will be 16 and 5.87. Then the correct option is A.

<h3>What is a standard deviation?</h3>

It is the measure of the dispersion of statistical data. Dispersion is the extent to which the value is in a variation.

The set of data is given below.

16, 22, 8, 5, 20, 18, 14, 17, 24

The mean of the data set will be

μ = (16 + 22 + 8 + 5 + 20 + 18 + 14 + 17 + 24) / 9

μ = 144 / 9

μ = 16

Then the standard deviation of the data set will be

$\rm \sigma = \sqrt{\dfrac{\Sigma (x_i - \mu)^2}{n}} \\\sigma = \sqrt{\dfrac{(16 - 16)^2 +(22 - 16)^2 + (8-16)^2 + ......+(24-16)^2 }{9}} \\\sigma = \sqrt{\dfrac{310}{9}}\\$

Simplify the expression further, then we have

σ = √34.44

σ = 5.87

The mean and standard deviation for the set of data will be 16 and 5.87.

Then the correct option is A.

More about the standard deviation link is given below.

brainly.com/question/12402189

#SPJ1

3 0

1 year ago

Help me asap I don’t know what to do

sattari [20]

Answer:

J 8.5 >=2.5p

Step-by-step explanation:

To do this plug in 3.4 for each version of p. The only one that would be true would be J.

3 0

3 years ago

What is the approximate area of a circle with a radius of 13cm? A.40.8cm² B.530.7cm² C.784cm² D.2461.8cm²

Gnesinka [82]

It would be B (530.7) because if you do 3.14 x 13 x 13 (Or to the second power) Then you get 530.66, the round to the nearest tenths

4 0

3 years ago

Read 2 more answers

HELP THIS IS HARD SOMEONE pls

IrinaK [193]

Answer:

3rd option

Step-by-step explanation:

Since the centre of dilatation is at the origin then multiply the coordinates by $\frac{1}{3}$

K (- 3, 9 ) → K' (- 3( $\frac{1}{3}$ ), 9( $\frac{1}{3}$ ) ) → K' (- 1, 3 )

L (- 9, 0 ) → L' (- 9( $\frac{1}{3}$ ), 0 ( $\frac{1}{3}$ ) ) → L' (- 3, 0 )

M (2, - 8 ) → M' (2 ( $\frac{1}{3}$ ), - 8 ( $\frac{1}{3}$ ) ) → M' ( $\frac{2}{3}$ , - $\frac{8}{3}$ )

N (6, 4 ) → N' (6 ( $\frac{1}{3}$ ) , 4 ( $\frac{1}{3}$ ) ) → N' ( 2, $\frac{4}{3}$ )

7 0

3 years ago

PLEASE HELP I WILL MARK BRAINLIST

lorasvet [3.4K]

Answer:

x³ - 8x² - 20x

Step-by-step explanation:

Zeroes: 10, 0, -2

Factors are: (x - 10), (x - 0), (x + 2)

Multiply all factors to get expression:

(x - 10)x(x + 2) = x(x - 10)(x + 2)

= x(x² - 10x + 2x - 20)

= x(x² - 8x - 20)

= x³ - 8x² - 20x

6 0

2 years ago