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2 years ago

Which of the numbers below is greater than 12? Select all that apply.

Mathematics

2 answers:

trapecia [35]2 years ago

4 0

Answer: B and C

Step-by-step explanation:

lara [203]2 years ago

3 0

Answer:

B and C

Explanation:

The negative numbers are never greater than positive numbers. In this case, we don't consider the negative ones but focus on the positive numbers.

So, 3/2 and 2.3 are greater than 1/2.

D cannot be a part of the answer because the denominator is too big.

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Need help pls<br>thank you in advance

ira [324]

Answer:

<u />

$\textsf{Mean}\:\overline{X}=\sf \dfrac{\textsf{sum of all the data values}}{\textsf{total number of data values}}$

$\implies \sf Mean\:(Nilo)=\dfrac{5+6+14+15}{4}=\dfrac{40}{4}=10$

$\implies \sf Mean\:(Lisa)=\dfrac{8+9+11+12}{4}=\dfrac{40}{4}=10$

<h3><u>Standard Deviation</u></h3>

$\displaystyle \textsf{Standard Deviation }s=\sqrt{\dfrac{\sum X^2-\dfrac{(\sum X)^2}{n}}{n-1}}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Nilo)} & =\sqrt{\dfrac{(5^2+6^2+14^2+15^2)-\dfrac{(5+6+14+15)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{482-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{82}{3}}\\\\& = 5.23\end{aligned}$

$\begin{aligned}\displaystyle \textsf{Standard Deviation (Lisa)} & =\sqrt{\dfrac{(8^2+9^2+11^2+12^2)-\dfrac{(8+9+11+12)^2}{4}}{4-1}}\\\\& = \sqrt{\dfrac{410-\dfrac{40^2}{4}}{3}}\\\\& = \sqrt{\dfrac{10}{3}}\\\\& = 1.83\end{aligned}$

<h3><u>Summary</u></h3>

Nilo has a mean score of 10 and a standard deviation of 5.23.

Lisa has a mean score of 10 and a standard deviation of 1.83.

The <u>mean</u> scores are the <u>same</u>.

Nilo's standard deviation is higher than Lisa's. Therefore, Nilo's test scores are more <u>spread out</u> that Lisa's, which means Lisa's test scores are more <u>consistent</u>.

5 0

1 year ago

Find the number that makes the ratio equivalent to 1:9.

nirvana33 [79]

Answer:

2/18

Step-by-step explanation:

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1 year ago

The deer population in a national wildlife refuge has been decreasing by 5% each year.

mestny [16]

Answer:

750 $(1-\frac{5}{100})^{n}$

Step-by-step explanation:

3 0

2 years ago

Peter paid 12.83 for a DVD. The price of the DVD was 11.99. How much sales tax did Peter pay?

Natalija [7]

He paid 83 cents for the tax sale

6 0

3 years ago

Read 2 more answers

Complete the function table below function<br> f(x) = 6x -3

taurus [48]

When x is equal to -1:
f(-1)=6(-1)-3
=-7-3
=-10
y=-10

When x is equal to 0:
f(0)=6(0)-3
=0-3
=-3
y=-3

When x is equal to 1:
f(1)=6(1)-3
=6-3
=3
y=3

When x is equal to 2:
f(2)=6(2)-3
=12-3
=9
y=9

6 0

2 years ago