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2 years ago

ANYWAYS next one qwq I’m already loosing hope and self esteem

Mathematics

2 answers:

AnnZ [28]2 years ago

5 0

Answer:

4.18

Step-by-step explanation:

Montano1993 [528]2 years ago

3 0

Answer:

The tip would be $4.18.

Step-by-step explanation:

Ok, 20 percent is basically 0.2 becuase percent is out of a hundred So 20/100 or in fraction form is 0.2 You can get the deciaml by putting down the original number (20) and move the decimal place 2 times to the left.

Now you got your decimal, multiply it by the amount given which in this case is 20.89.

Multiply the two numbers and you’ll get 4.178

rounded to the nearest dollar would be 4.18

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Calculate the value of the sample variance. Round your answer to one decimal place. 9_5,9_5,2,9_5

Ugo [173]

Answer:

$s^2 = 0.01$

Step-by-step explanation:

Given

Values: 9/5, 9/5, 2, 9/5

Required

Calculate the sample variance

Sample variance is calculated using:

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$

First, we calculate the mean

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

$\overline x = \frac{9/5 + 9/5 + 2 + 9/5}{4}$

$\overline x = \frac{7.4}{4}$

$\overline x = 1.85$

$s^2 = \frac{\sum (x_i - \overline x)^2}{n - 1}$ becomes

$s^2 = \frac{(9/5 - 1.85)^2+(9/5 - 1.85)^2+(2 - 1.85)^2+(9/5 - 1.85)^2}{4 - 1}$

$s^2 = \frac{(-0.05)^2+(-0.05)^2+(0.15)^2+(-0.05)^2}{4 - 1}$

$s^2 = \frac{0.0025+0.0025+0.0225+0.0025}{3}$

$s^2 = \frac{0.03}{3}$

$s^2 = 0.01$

<em>Hence, the variance is 0.01</em>

5 0

2 years ago

You have $50 in your savings account and plan to deposit $10 each week. Your friend has $25 in her savings account and plans to

Mariulka [41]

Answer: 50+10x

Answer: 25+10x

Answer: No. 50+10x=25+10x. In simplified form, it is 0 =25 which is undefined (no solution).

7 0

1 year ago

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