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3 years ago

This is Q2:5 Weekly Math Review

Mathematics

2 answers:

mezya [45]3 years ago

7 0

Answer:

28.50+x or 28.50x

Step-by-step explanation:

6*4.75=28.50

6*x=6x or x

photoshop1234 [79]3 years ago

5 0

The. Answer is 8 I did it before

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300 hundreds= how many tens! Pls answer ASAP

Svetradugi [14.3K]

Answer:

300÷10=30

Step-by-step explanation:

hope this helps

8 0

3 years ago

Read 2 more answers

Hey guys I need help simplifying this radical expression please. ASAP please.

fiasKO [112]

Answer:

go on symbolab type the equation in and it gives u anwsers and work

Step-by-step explanation:

=\frac{4}{\left(x+2\right)\left(x+4\right)}

6 0

3 years ago

A theater company charges $9.50 per ticket for people of all age groups. If c represents the total number of children who bought

n200080 [17]

The best expression would be 9.50c + 9.50a.

8 0

4 years ago

Round your answer to two decimal places

jolli1 [7]

Rounding a 10-meters long rope to form a circle will give you a circle whose circumference is 10 meters. In every circle, the following formula links radius and circumference together:

$C = 2\pi r \iff r = \dfrac{C}{2\pi}$

So, in your case, the radius will be

$r = \dfrac{10}{2\pi} = \dfrac{5}{\pi} \approx 1.591549\ldots$

which we can best approximate as 1.59

7 0

4 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