What is the mad of 6,6,7,8,8.5,9,9.5 and 10
mad = mean absolute deviation
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6+6+7+8+8+5+9+9+5+10 Add all these together you will get 73 then divide by the amount of numbers which is 10 and you get 7.3 now subtract 7.3 from all your numbers. Example 6 - 7.3 is 1.3. Do this with all your numbers and add results together and you should come up with 15 then you divide by 10 and your answer would be 1.5. So your MAD is 1.5

use substitution to solve each system of equations. y = x + 5 3x + y = 25 62/87,21 y = x + 5 3x + y = 25 substitute x + 5 for y in the second equation. substitute the solution for x into either equation to find y. the solution is (5, 10)

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step-by-step explanation:

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west