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Neporo4naja [7]
3 years ago
13

Find angle PRS in the image above

Mathematics
1 answer:
trasher [3.6K]3 years ago
6 0

Answer:

142°

Step-by-step explanation:

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The rent on my house is $2,000 a month. My landlord decided to increase the rent by 20%. What is the new monthly rent, I have to
Gelneren [198K]

Answer:

if 2,000 is the original rent and it increases by 20% the new rent is $2,400.

Step-by-step explanation:

this is because 10% of $2,000 is 200 so 20% is $400

3 0
3 years ago
Simplify each write as a smaller fractions or mixed number 6 / 18
miv72 [106K]
6/18= 1/3 a simplest fraction
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Which set of shapes contains members that are always similar to one another?
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It should be C. Equilateral triangles
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Considering the number of questions incorrect from classmates on a quiz {10, 11, 12, 13, 13, 13, 14, 15, 16, 16, 17, 18, 18, 19,
IrinaK [193]

Answer:

According to the Empirical Rule, 68% of the data should fall between 11.98 and 18.02

Step-by-step explanation:

We are given the following data in the question:

10, 11, 12, 13, 13, 13, 14, 15, 16, 16, 17, 18, 18, 19, 20

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{225}{15} = 15

Sum of squares of differences = 25 + 16 + 9 + 4 + 4+ 4 + 1 + 0+ 1+ 1 + 4 + 9 + 9+ 16 + 25 = 128

S.D = \sqrt{\dfrac{128}{14}} = 3.02

Empirical rule:

  • According to this rule almost all the data lies within three standard deviation of the mean for a normal distribution.
  • About 68% of data lies within one standard deviation of the mean.
  • About 95% of data lies within two standard deviations of mean.
  • Arround 99.7% of data lies within three standard deviation of mean.

Thus, by empirical rule,

\mu \pm 1\sigma = 15\pm (3.02) = (11.98,18.02)

According to the Empirical Rule, 68% of the data should fall between 11.98 and 18.02

5 0
3 years ago
Samuel buys office supplies for his home buissness
Reil [10]

Answer:

What supplies?

Step-by-step explanation:

6 0
2 years ago
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