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geniusboy [140]
3 years ago
9

GETS BRAINLIEST AND 11 PTS!

Mathematics
2 answers:
cricket20 [7]3 years ago
6 0
Add the total of both groups and divide by the total number in each group

 Group X = 535 / 18 = 29.72 mean

group Y = 500 / 18 = 27.78 mean

Group X has the higher mean


Whitepunk [10]3 years ago
5 0
The answer is 
A. Group X has a higher mean than Group Y.
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Two lines, C and D, are represented by the equations given below:
defon
Substitue y=3x+2 to the y in y=x+10.
3x+2= x+10

Subtract 2 to both sides.
3x=x+8

Subtract x to both sides.
2x=8

Divide both sides by 2
2x/2 = 8/2

You are left with x = 4

Choose one equation and replace x by 4.
y = (4) + 10
y= 14

Now, you have x = 4 and y= 14. So, your ordered pair is (4,14) because both lines pass through that point.

If you do not want to do this solution, I suggest you graph it using the slope.
8 0
3 years ago
Using four or more complete sentences, contrast race and ethnicity and provide an example of each.
Brums [2.3K]

Answer:

Race and Ethnicity are considered to be social constructs that enable humans to be grouped or categorized. They are sometimes used interchangeably but most argue that they are different and give them different definitions.

Race is generally used to refer to people that have the same physical characteristics such as skin color or the same texture of hair for instance Black and White/Caucasian.

Ethnicity on the other hand relates to people sharing a common culture, language, nation, and/ or tribal heritage for instance, the English, the Irish and the Igbo.

8 0
3 years ago
Read 2 more answers
How do you divide by two digit divisor
neonofarm [45]
Dividing with a 2 digit divisor is simple...
for example...
25/125
25 goes into 125, five times
25x5=125
5 would be the answer.
its the same thing as dividing with a one digit divisor. its just two digits instead.

hope this helps

5 0
3 years ago
Jason walks a round-trip of 0.85 mile to school every day. How many miles will he walk in 4.5 days?
Volgvan

Answer:

4.5 x 0.85 = 3.825

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Will give brainliest
Galina-37 [17]

The percentage of the radioactive isotope left is 25.0000%.

<h3>What is the half life?</h3>

The half life of a radioactive isotope is the time that will elapse before only half of the number of original isotopes will remain.

Now;

We are told that;

Half life (t1/2) = 55 days

Time taken (t) =  115 days

Ratio of isotope remaining = N/No

Thus;

N/No = (1/2)^t/t1/2

N/No = (1/2)^115/55

N/No = (1/2)^2

N/No =1/4

Hence, the percentage = 1/4 * 100/1 = 25.0000%

Learn more about half life of an isotope:brainly.com/question/16387602

#SPJ1

7 0
2 years ago
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