2 years ago

The number 77 is decreased to 16. What is the percentage by which the number was

Mathematics

1 answer:

Troyanec [42]2 years ago

3 0

Answer:

79.2% (to the nearest tenth)

Step-by-step explanation:

use the percent change formula:

PC = [ (difference between initial value and final value) ÷ initial value] x 100

= [(77-16) ÷77] x 100

= 79.22077922...

= 79.2% (to the nearest tenth)

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hjlf

Answer:

a) $s= 9.74$

D. 9.74

b) $Median= 74$

B. 74

Step-by-step explanation:

Part a

We have the following dataset given:

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We can begin calculating the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

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Now we can calculate the sample deviation with the following formula:

$s =\sqrt{\frac{\sum_{i=1}^n (X_i-\bar X)^2}{n-1}}$

And after replace we got:

$s= 9.74$

Part b

For this case we need to sort the value on increasing way:

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And the median would be the value in the position 13 and we got:

$Median= 74$

6 0

3 years ago

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Dmitrij [34]

Answer:

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Step-by-step explanation:

multiply both sides by 3 giving you 1.25

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3 years ago

A line has a slope of 3 and a y-intercept of 5. What is its equation in slope-intercept form? Write your answer using integers,

s344n2d4d5 [400]

Answer:

$y=3x+5$

Step-by-step explanation:

The problem is asking for slope-intercept form, luckily, they gave us both of those things.

Slope-intercept form: $y=mx+b$ , where $m=$ slope and $b=$ y-intercept.

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Hope this helps!

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3 years ago

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Answer: I think it's a

Step-by-step explanation:

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3 years ago

If the working age population is 250 million, 170 million are employed and 9 million are unemployed, the unemployment rate is

mr Goodwill [35]

Answer:

5.0

Step-by-step explanation:

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3 years ago

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