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mart [117]
2 years ago
7

What is the mean absolute deviation of the data set? 12, 15, 7, 4, 9, 10, 9, 6

Mathematics
1 answer:
bearhunter [10]2 years ago
3 0
Here is an example:
Find the MAD of 2,4,6,8 Step 1 : Find the mean of the data : (2+4+6+8) / 4 = 20/5 = 4 Step 2 : Find the distance between each data and mean. Distance between 2 and 5 is 3 Distance between 4 and 5 is 1 Distance between 6 and 5 is 1 Distance between 8 and 5 is 3
Step 3 : Add all the distances : 3+1+1+3 = 8
Step 4 : Divide it by the number of data : 8 / 4 = 2 2 is the average absolute deviation.
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4 0
3 years ago
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Which expression shows how to multiply 5x381 by using place value and exxpanded form?
Dovator [93]
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Let’s show how to multiply this given equation using its expanded form and place value
=> 5 x 381
since we’re multiplying, we will start with the ones value which is 1
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5 0
2 years ago
I NEED IT EXTREMELY FAST!!!!
pochemuha

Answer:

x = 11 | Scale factor = 2

Step-by-step explanation:

As you can see, the 3 turns into a six meaning it multiplied by 2. Apply this to 5.5 to get 11. The 2 is your scale factor.

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6 0
2 years ago
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A ferry departs from a port along the Sands River at 10:00 am. The ferry travels at a speed of 15 mph in still water and returns
jek_recluse [69]

Answer:

Speed of river's current = 5 mph

Step-by-step explanation:

Let 'd' be the distance covered  

 Let x be the speed of the rivers current

Speed upstream = 15-x

speed downstream = 15+x

Time = distance / speed

time upstream = \frac{d}{15-x}

time downstream = \frac{d}{15+x}

the ferry trip upstream takes twice as long as its return trip downstream

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divide both sides by d

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cross multiply

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Add 2x on both sideds

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Speed of river's current = 5 mph

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3 years ago
By what theorem are these triangles congruent?
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SSS (side side side)
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