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pochemuha
3 years ago
14

3. Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth.

Mathematics
1 answer:
Ainat [17]3 years ago
7 0
<span>16.1428571 = mean
3.563 = standard deviation
</span>
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The scale for a map is 20 miles = 1/2 inch. The distance between two towns on the map is 3 3/4 inches. What is the actual distan
zubka84 [21]

Answer:

150 miles

Step-by-step explanation:

If 1/2 of an inch is 20 miles, we can assume that 1/4 of an inch is 10 miles, since half of 1/2 is 1/4 and 1/2 of 20 is 10.

Equipped with this information, we can divide 3 by 1/2 or multiply 3 by the reciprical, 2/1 to get how much we should multiply 20 by.

3*2=6

20*6=120

Then we can multiply 10 by 3 and add that on our answer, since there are still 3/4s left and 1/4=10 miles.

10*3=30

120+30=150

The actual distance is 150 miles.

Hope this helps!

4 0
3 years ago
What is the solution of this equqtion? 4+ 1/4 w=6​
ale4655 [162]

Answer:

w = 8

Step-by-step explanation:

4+ 1/4 w=6​

Subtract 4 from each side

4-4+ 1/4 w=6​-4

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4 0
3 years ago
What fraction does 4 triangles represent when 1 hexagon is worth 1 whole
strojnjashka [21]

Answer: 2/3

Step-by-step explanation: a hexagon is made up of 6 triangles so it would be 4/6 which can be simplified is 2/3

4 0
3 years ago
Can anyone help me with part b? I will mark you as brainliest!
Kruka [31]

Answer:

There are 75 total cubes in the box.

Step-by-step explanation:

If 0.4 is 30, then divide 30 by 4 and then multiply that by 3, because that would be the answer for red or yellow, then just multiply 22.5 x 2 to find both red and yellow. Finally, add 30 and 45 for your answer.

8 0
3 years ago
Write (x+1)÷x-(y+1)÷y as a simplified fraction ​
mina [271]

Answer:

\frac{y-x}{xy}

Step-by-step explanation:

y - x / xy

8 0
3 years ago
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