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Nikolay [14]
3 years ago
10

The following length measurements were taken by students using several different measuring devices. Find . the average of the me

asurements. Make sure that your answer has the correct number of significant figures. . 10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm
Mathematics
2 answers:
Dmitriy789 [7]3 years ago
4 0

Answer:

10.2 cm

Step-by-step explanation:

Data : 10.05 cm, 10.1 cm, 9.741 cm, 10.6 cm, 10.5 cm

We are supposed to find the average

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

Average = \frac{10.05+10.1+9.741+ 10.6+10.5}{5}

Average = \frac{50.991}{5}

Average =10.1982

Rounding off gives Average =10.2

Hence the average of the measurements with the correct number of significant figures is 10.2 cm

marissa [1.9K]3 years ago
3 0
In getting the average of all the measurement you give you need first to sum all the measurements and also make sure that you do it properly. Then divide the sum with the number of measurements. By calculating the answer is 10.288
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Count the number of 5-digit numbers (in the decimal system; integers from 10000 to 99999) which are not divisible by 11.
Alexxandr [17]

Answer:

So total number which is not divisible by 11 = 89999-8181 = 81819  

Step-by-step explanation:

We have to find the total numbers which are not divisible by 11 from 10000 to 99999

Total number from 10000 to 99999 = 99999-10000+1=90000

Just after 10000 the number which is divisible by 11 is 10010

And just below 99999 the number which is divisible by 11 is 99990

Using AP formula

T_N=a+(n-1)d, here a is first term, d is common difference and n is number of terms

So 99990=10010+(n-1)11

n-1 = 8180

n= 8181

So total number which is not divisible by 11 = 90000-8181 = 81819

4 0
2 years ago
There are 84 jars of jelly on a shelf at the store. Of these, 21 are grape. What percent of the jars of jelly are grape?​
Vladimir79 [104]

Answer:

25%

Step-by-step explanation:

Start by dividing 84 by 4 and you get 21. Then take 100 and divide that number by 4, and you get 25. There is your answer. The 21 jars of grape jelly are equal to 25% of the number 84. Hope this helps!

5 0
2 years ago
Anyone have any idea what it could be?
Ronch [10]
The answer is B because 90 to 30 is 3 over 2
4 0
2 years ago
What is 1/10th of 2,871,000?
abruzzese [7]
This is fairly simple. Divide 2,871,000 by 10 and that's your answer!

\frac{2,871,000}{10} =287,100

Also, since you're dividing by a factor of 10 (or in this case, <em>10</em>) you can just take away as many places as are zeros in the number you're dividing from. This works for <em>10, 100, 1,000, 10,000, etc. </em>In this case, since there is only one zero in 10 you only take away one place marking, which gives you 287,100.
7 0
3 years ago
What is the ratio 18 to 27 written as a fraction and lowest terms
romanna [79]

Step-by-step explanation:

18:27

=18/27

=2/3 or 2:3

3 0
3 years ago
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