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3 years ago

25 + -100 = 25 - n solve the equation mentally

Mathematics

2 answers:

NeTakaya3 years ago

8 0

$25-100 = 25 -n\\\\\implies -100 = -n\\\\\implies n = 100$

topjm [15]3 years ago

5 0

Answer:

n = 100

Step-by-step explanation:

25 + -100 = 25 - n

=> -100 = -n

=> n = 100

Hoped this helped.

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According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 20

Vikentia [17]

Answer:

Random variable: for this case represent the number of complaints in 2007

Population parameter: represent the real proportion of complaints in 2007 p

Hypothesis to verify

We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:

Null hypothesis: $p=0.23$

Alternative hypothesis: $p \neq 0.23$

Step-by-step explanation:

Information provided

n=1432 represent the random sample taken

X=321 represent the number of complaints

$\hat p=\frac{321}{1432}=0.224$ estimated proportion of complaints in 2007

$p_o=0.23$ is the value to verify

z would represent the statistic

Random variable: for this case represent the number of complaints in 2007

Population parameter: represent the real proportion of complaints in 2007 p

Hypothesis to verify

We want to check if the true proportion of complaints in 2007 is equal to 0.23, the system of hypothesis are.:

Null hypothesis: $p=0.23$

Alternative hypothesis: $p \neq 0.23$

3 0

3 years ago

A national newspaper reported that the state with the longest mean life span is Hawaii, where the population mean life span is 7

Alinara [238K]

Answer:

Mean = 71.4 years

Standard Deviation = 20.64 years

Step-by-step explanation:

We are given the following data set:

72, 68, 81, 93, 56, 19, 78, 94, 83, 84, 77, 69, 85, 97, 75, 71, 86, 47, 66, 27

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.

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

$Mean =\displaystyle\frac{1428}{20} = 71.4$

Sum of squares of differences =

0.36 + 11.56 + 92.16 + 466.56 + 237.16 + 2745.76 + 43.56 + 510.76 + 134.56 + 158.76 + 31.36 + 5.76, 184.96 + 655.36 + 12.96 + 0.16 + 213.16 + 595.36 + 29.16 + 1971.36 = 8100.8

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4 years ago

A 1L bag of Normal Saline must infuse over 6 hours using tubing calibrated to deliver 20gtts/mL. How many drops per minute shoul

sammy [17]

Answer:

total drop per minute is 56

Step-by-step explanation:

Give data:

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4 years ago

What is 30/4 as a mixed fraction

Inessa05 [86]

30/4 = 7 2/4
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7 0

3 years ago

Read 2 more answers

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elena-s [515]

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3 years ago