All categories

3 years ago

3.8,4.2,5.3,x; mean 4.8

2 answers:

6 0

Hello!

I would assume we are solving for x, so lets try to understand what we need to do here.

to find the mean, you add all the numbers together and divide by how many number sets there are.

so in this case: (3.8+4.2+5.3+x)/4

so what I did, was go in reverse

(4.8*4)-3.8-4.2-5.3=5.9

so x must be 5.9

I hope this helps, and have a nice day!

Free_Kalibri [48]3 years ago

3 0

Answer: 5.9

Step-by-step explanation:

You might be interested in

What is the value of 53 15 25 125 625 thank you

AfilCa [17]

The answer is 843... if you are talking about adding...

5 0

3 years ago

Read 2 more answers

A high speed train travels a distance of 503 km in 3 hours.

tensa zangetsu [6.8K]

The average speed, in km/minute, of the train is 2.79 km/minute

<h3>Calculating average speed </h3>

From the question, we are to calculate the average speed in km/minute

From the given information,

Distance travelled = 503 km

Time taken = 3 hours = 3 × 60 minutes = 180 minutes

Using the average speed formula,

Average speed = Distance / Time

∴ Average speed of the train = 503 / 180

Average speed of the train = 2.79 km/minute

Hence, the average speed, in km/minute, of the train is 2.79 km/minute

Learn more on Calculating average speed here: brainly.com/question/12025128

#SPJ1

3 0

2 years ago

How do you do 69% as a fraction? Please show work.

MakcuM [25]

69% is the same as .69, which is the same as 69/100

7 0

3 years ago

Read 2 more answers

12.4. Measure of Dispersion 2076 Q.No. 15 Find the standard deviation of: 4, 6, 8, 10, 12.

Alenkinab [10]

Answer:

Standard deviation of given data = 3.16227

Step-by-step explanation:

Step(i):-

Given sample size 'n' = 5

Given data 4, 6,8,10,12

$Mean = \frac{4+6+8+10+12}{5} = 8$

Mean of the sample x⁻ = 8

Standard deviation of the sample

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

Step(ii):-

Given data

x : 4 6 8 10 12

x-x⁻ : 4 - 8 6-8 8-8 10-8 12-8

(x-x⁻) : -4 -2 0 2 4

(x-x⁻)² : 16 4 0 4 16

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

$S.D = \sqrt{\frac{16+4+0+4+16}{4}}$

S.D = √10 = 3.16227

Final answer:-

The standard deviation = 3.16227

8 0

2 years ago

I"LL GIVE YOU BRAINLIEST JUST HELP ME! PLEASE

oee [108]

Answer:

4m^(4)−3m^(3)−6m^(2)+5m

Step-by-step explanation:

4 0

3 years ago