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1 year ago

What is a good estimate for 380% of 20

Mathematics

2 answers:

Ostrovityanka [42]1 year ago

7 0

Answer:

380 divided by 20 is your answer

Step-by-step explanation:

ddd [48]1 year ago

6 0

Answer:

The answer is 76. The estimation would be 80.

Step-by-step explanation:

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The data given below contain the state cigarette taxâ€‹ (in $) for all 20 regions of a country.

g100num [7]

Answer:

(a) $\bar x= 1.583$ -- Population Mean

(b) $s = 1.032$ --- Population standard deviation

Step-by-step explanation:

Given:

Cigarette tax for 20 regions

Solving (a): The population mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

$\sum x = 1.36 + 1.70 + 2.50 + 0.45 + 1.18 + 0.64 + 3.46 + 0.57 + 2.00 + 0.80 + 1.60 +0.98 + 0.36 + 2.24 + 4.35 + 0.62 + 2.70 + 1.78 + 1.53 + 0.84$

$\sum x = 31.66$

$n = 20$

So, we have:

$\bar x= \frac{31.66}{20}$

$\bar x= 1.583$

Solving (b): The population standard deviation

This is calculated as:

$s = \sqrt{\frac{\sum( x - \bar x)^2}{n}$

$\sum (x -\bar x)^2 = (1.36 - 1.583)^2 + (1.70 - 1.583)^2+ (2.50 - 1.583)^2+ (0.45 - 1.583)^2+ (1.18 - 1.583)^2+ (0.64 - 1.583)^2+ (3.46 - 1.583)^2+ (0.57 - 1.583)^2+ (2.00 - 1.583)^2+ (0.80 - 1.583)^2+ (1.60 - 1.583)^2+(0.98 - 1.583)^2+ (0.36 - 1.583)^2+ (2.24 - 1.583)^2+ (4.35 - 1.583)^2+ (0.62 - 1.583)^2+ (2.70 - 1.583)^2+ (1.78 - 1.583)^2+ (1.53 - 1.583)^2+ (0.84- 1.583)^2$

$\sum (x -\bar x)^2 = 21.29222$

So:

$s = \sqrt{\frac{21.2922}{20}$

$s = \sqrt{1.06461}$

$s = 1.032$

Solving (c):

Population mean tells the average amount while the standard deviation represents the spread from the calculated mean

Option (4) is correct

6 0

2 years ago

Slope for (6,5) (14, -3)

otez555 [7]

Answer:

m= -1

I hope this helped, have a great day!! <3

7 0

2 years ago

37% of what number is 72?

tatiyna

The answer is 194.59

(72 x 100) / 37 = 194.59

4 0

2 years ago

Read 2 more answers

when you subtract one negative integer from another will your answer be greater than or less than integer you started with? Expl

pshichka [43]

Lets take (-4) - (-6)
= -4 + 6 (here we changed the sign because in integers when you are subtracting an integer, we put its opposite..thats the rule .)
=. -4 + 6 = 2

so here we got the answer as 2 .....this shows that your answer will be less than the integer you started with ....this is because here in subtraction we will first change the sign and then follow the same rules of addition ...so here if both the numbers have opposite signs then we subtract and put the greater number sign .....

Hope i am right !!!

6 0

2 years ago

Which of the following is closest to 27.8 × 9.6? A. 280 B. 300 C. 2,800 D. 3,000

Alisiya [41]

27.8 × 9.6 is equal to 266.88
So, the closest would be A. 280.

3 0

2 years ago

Read 2 more answers