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3 years ago

Select the correct answer.

Mathematics

2 answers:

mario62 [17]3 years ago

5 0

Answer:

A is the correct answer

Step-by-step explanation:

A is the correct answer

Because as you can see, when mixing sugar in water no color is change but you can feel the sweet of the water. Hope my explanation if right :(

Hope this can help you :3

alexira [117]3 years ago

3 0

Answer:

A for plato. give me brainiest

Step-by-step explanation:

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What is 24.5 as a fraction.

IRINA_888 [86]

24 1/2. 0.5 is equal to 1/2

7 0

3 years ago

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

2 years ago

Help please asappp!!!!!!!!!!!!!!!!!!

mario62 [17]

I think the answer is B! I hope that helps!!!!!

BRAINLY would be appreciated❤️

4 0

3 years ago

Find the mode of the data set

SashulF [63]

Answer:

Rock-4

Country-6

Hip Hop-5

pop-3

Country is the mode

hope this helps

have a good day :)

Step-by-step explanation:

8 0

3 years ago

Jim lost $55 in the stock market on seven consecutive days. How much money did Jim lose in all?

earnstyle [38]

I think he lost $375 because I'm pretty sure your supposed to multiply 55 and 7

8 0

3 years ago