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torisob [31]
3 years ago
13

What is the mean of the values in the dot plot? Enter your answer in the box. A number line ranging from 15 to 25 with one dot o

ver 16, four dots over 17, four dots over 19, one dot over 21, two dots over 22, one dot over 23, and one dot over 25.
Mathematics
2 answers:
solmaris [256]3 years ago
4 0
The mean of a dataset is the all members of the dataset added together and then divided by the number of members in the set. From your description of the number line, I've created a list of members.

16, 17, 17, 17, 17, 19, 19, 19, 19, 21, 22, 22, 23, 25

Adding all members of this set up produces the value 273. There are 14 members in the set, so 273 / 14 = 19.5. Thus, the mean of the set is 19.5

igomit [66]3 years ago
4 0

Answer:

19.5

Step-by-step explanation: I took the test.

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Which of the following numbers could be the sides of a right triangle. A)8,15,17. B)6,8,12 C)9,11,21 D)4,13,16
ArbitrLikvidat [17]

Answer:

A) 8, 15, 17.

Step-by-step explanation:

Right triangle obey the Pythagorean theorem. Thus, we choose the two smaller numbers (being the cathetus) and if after applying the P. Theorem we get the biggest of each option  (the hypotenuse) that means that those numbers could be the sides of a right triangle.

The Pythagorean theorem states that: a^2+b^2=c^2

Thus:

\sqrt{a^2+b^2}=c

Option A:

\sqrt{8^2+15^2}=17 → 17 = 17 OK!

Option B:

\sqrt{6^2+8^2}  = 10 → 10 ≠ 12 NO

Option C:

\sqrt{9^2+11^2} = [tex]\sqrt{202}[/tex] → \sqrt{202} ≠ 21 NO

Option D:

\sqrt{4^2+13^2} = \sqrt{185} → \sqrt{185} ≠ 16 NO

3 0
3 years ago
The age of a boy is twice that of his sister. five years ago the boy was 3 times the age of his sister. How old is the boy
joja [24]

<em>Answer</em><em>:</em>

<h2><em>2</em><em>0</em><em> </em><em>years</em><em> </em><em>old</em><em>.</em></h2>

<em>Sol</em><em>ution</em><em>,</em>

<em>Let</em><em> </em><em>the</em><em> </em><em>age</em><em> </em><em>of</em><em> </em><em>sister</em><em> </em><em>be</em><em> </em><em>X</em>

<em>Let</em><em> </em><em>the</em><em> </em><em>age</em><em> </em><em>of</em><em> </em><em>boy</em><em> </em><em>be </em><em>2</em><em>x</em>

<em>Now</em><em>,</em>

<em>Five</em><em> </em><em>years</em><em> </em><em>ago</em><em>,</em>

<em>3(x - 5) = 2x - 5 \\ or \: 3x - 15 = 2x - 5 \\ or \: 3x - 2x =  - 5 + 15 \\ x = 10</em>

<em>Again</em><em>,</em>

<em>Repla</em><em>cing</em><em> </em><em>value</em><em>,</em>

<em>age \: of \: boy = 2x \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2 \times 10 \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 20</em>

<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>.</em><em>.</em>

<em>Good</em><em> </em><em>luck</em><em> on</em><em> your</em><em> assignment</em><em>.</em><em>.</em>

7 0
3 years ago
PLEASE HELP ASAP What is the m and b for this graph??
suter [353]

Answer:

20. 9. 23 12.131. 32.2.3..2.3.3.1.3 13.2.3 2

3.30am. 3.2 36.2. 1.. 3.2.3 3.2.3.3 3.3. 33. 43 3.3...3.34 2. 3 4 3.4 2.4.4. and the. 4. I. 4.4 4 3.34. is. that. 3.. I think 3 and. But. You. You 3.2 42. 44 3.4.3 2.3 4 3.3.3 4 3 3 4 2. 34.3.3 3 3.2.3 3.2.3.3. You. can. I. am. 34 3 3.43.2 34 3

3 0
2 years ago
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IgorLugansk [536]
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Best luck with your studying
6 0
2 years ago
Study time (hours)
xxTIMURxx [149]

Answer: A B and C

Step-by-step explanation:

I did the usatestprep

7 0
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