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Svetach [21]
3 years ago
8

Brianna measures the temperature of two chemical samples. If the first sample measures -8 degrees Celsius and the second sample

measures 24 degrees Celsius, what is the average temperature of the two samples? *
Mathematics
1 answer:
Slav-nsk [51]3 years ago
6 0

Answer: + 8 degrees

Step-by-step explanation: average (-8+24)/2= 16/2 degrees

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What is the sum of three tenths plus thirty nine hundredths equals blank a thirty six hundredths b forty two hundredths c sixty
ad-work [718]

Answer:c- sixty nine hundredths

Step-by-step explanation:

three tenths can be expressed in decimal as 3/10

thirty nine hundredths can be expressed in decimal as 39/100

Therefore the sum of three tenths plus thirty nine hundredths equals

3/10 +39/100

We first find the l.c.m of the two fractions equals 100 so we have 100 as the denominator

then 100 divided by 10  multiplied by 3 +100 divided by 100 multiplied by 39 as illustrated below gives the answer

3/10 +39/100

=30+39/100

=69/100= sixty nine hundredths

3 0
3 years ago
Me podeis ayudar por favor????
Mariulka [41]

1-421,67

2-220,904

3-1.135,27568

4-3.256,1575


8 0
4 years ago
The data list shows the scores of ten students in Mr. Smith's math class. 61, 67, 81, 83, 87, 88, 89, 90, 98, 100 What is the st
cluponka [151]

Answer:

12.3

Step-by-step explanation:

Step 1

We find the mean

The data list shows the scores of ten students in Mr. Smith's math class. 61, 67, 81, 83, 87, 88, 89, 90, 98, 100

Mean = Sum of terms/Number of terms

Number of terms = 10

Mean = 61 + 67 + 81 + 83 + 87 + 88 + 89 + 90 + 98 + 100/10

Mean = 844/10

Mean = 84.4

Step 2

Standard deviation

The formula for sample standard deviation =

√(x - Mean)²/n - 1

= √[(61 - 84.4)² + (67 - 84.4)² + (81 - 84.4)² + (83 - 84.4)² + (87 - 84.4)² + (88 - 84.4)² + (89 - 84.4)² + (90 - 84.4)² + (98 - 84.4)² + (100 - 84.4)²]/10 - 1

=√ 547.56 + 302.76 + 11.56 + 1.96 + 6.76 + 12.96 + 21.16 + 31.36 + 184.96 + 243.36/10 - 1

= √1364.4/9

= √151.6

= 12.31259518

Approximately to the nearest tenth = 12.3

The standard deviation = 12.3

6 0
3 years ago
Find the additive inverse of 9/10 need help
frosja888 [35]

The Additive inverse only works when you add a to its oppositie leaving a sum of 0

For example, says 5 represents a.

5 + b = 0

B, is 5's additive inverse: -5

The reciprocal of 9/10, however, is 10/9

7 0
3 years ago
Read 2 more answers
Graph the set of points. Which model is most appropriate for the set?
Rama09 [41]
To  graph these set of points you put x first (horizontal line) then y second (vertical line) example (-2,10) you would start in the middle then go to the left twice then 10 you go up 10 from that -2 spot

hope i helped you!
4 0
4 years ago
Read 2 more answers
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