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3 years ago

Help me solve this...

Mathematics

1 answer:

klio [65]3 years ago

8 0

It is A. When you take 17.1 and subtract 3 from it, it will equal 14.1.

Hope this helped!

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Question in attachment

Elan Coil [88]

Answer:

The range within 1 standard deviation :155.12 ,328.38

Step-by-step explanation:

Data: 338+160+210+180+166+272+128+409+240+250+160+300+340+200+194+132+202+180+420+380+325+185+233+198

$Mean = \frac{\text{Sum of all observations}}{\text{No. of observations}}$

$Mean =\frac{338+160+210+180+166+272+.........+233+198}{24}$

Mean =241.75

$\text{Standard deviation} = \sqrt{\frac{\sum(x-\bar{x})^2}{n-1}}$

Standard deviation = $\sqrt{\frac{(338-241.75)^{2}+(160-241.75)^{2}+......+(185-241.75)^{2}+(233-241.75)^{2}+(198-241.75)^{2}}{24-1}}$

Standard deviation =86.63

Range within 1 standard deviation : $(\mu-\sigma,\mu+\sigma)$

Range within 1 standard deviation :(241.75-86.63,241.75+86.63)

Range within 1 standard deviation :155.12 ,328.38

Hence The range within 1 standard deviation :155.12 ,328.38

7 0

3 years ago

Help me please thank you!

Svetach [21]

BD is the bisector, so you just divide 40 by 2 to get 20, your answer.

7 0

3 years ago

Please help been stuck on this hw question ALLL DAYYYYYY

Rama09 [41]

Answer:

1 5/9

Step-by-step explanation:

9 1/3 can be rewritten as 28/3. The question is asking for you to divide 28/3 by 6. 6 is 6/1, so the expression is 28/3 divided by 6/1. You then do the reciprocal of 6/1 and the expression is $\frac{28}{3} * \frac{1}{6}$ . This gets you 28/18, which is simplified to 14/9 or 1 5/9. Hope this helps!

8 0

3 years ago

Read 2 more answers

7: Jikayla earns $19 per hour babysitting. Last week, she worked 7 hours on Monday, 6 hours on Tuesday, and 7 hours on Wednesday

____ [38]

Answer:

$475

Step-by-step explanation:

7+6+7+5 = 25

25*19 = 475

6 0

3 years ago

Unit rate for typing 34 words in a minute in a half

katrin [286]

Answer:

Rate is 1.1333 words per second 

Step-by-step explanation:

We understand rating as frequency or speed of doing something per time (seconds mainly)

${ \green{ \tt{rate = \frac{item \: quantity}{time} }}} \\$

Let's find rate in terms of seconds (words per second)

${ \rm{rate = \frac{34 \: words}{ (\frac{1}{2} \times 60) \: seconds} }} \\ \\ { \rm{rate = \frac{34}{30} }} \\ \\ { \rm{rate = 1.133 \: \: words \: per \: second}}$

6 0

1 year ago