Answer:
![\large\boxed{9x,\ -18y^2}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B9x%2C%5C%20-18y%5E2%7D)
Step-by-step explanation:
![\dfrac{9x}{9}=x\\\\\dfrac{-18y^2}{9}=-2y^2](https://tex.z-dn.net/?f=%5Cdfrac%7B9x%7D%7B9%7D%3Dx%5C%5C%5C%5C%5Cdfrac%7B-18y%5E2%7D%7B9%7D%3D-2y%5E2)
Answer:
Step-by-step explanation:
the sum of the angles is 360 degrees
you have 3 angles equal to 91
91*3=273
360-273=87
87/3=29
the angle g, or d, is 29
Answer:
x = 6.75 cars
Step-by-step explanation:
We are given the following in the question:
Sample size, n = 65
14 people generally sell 5 cars
19 generally sell 6 cars
12 generally sell 7 cars
9 generally sell 8 cars
11 generally sell 9 cars
We have to calculate the sample mean.
Formula:
![\text{Weighted mean} = \displaystyle\frac{\sum w_ix_i}{\sum w_i}\\\\\sum w_ix_i = 14(5) + 19(6) + 12(7) + 9(8) + 11(9) = 439\\\\\sum w_i = 14 + 19 + 12 + 9 + 11 = 65\\\\\text{Weighted mean} = \frac{439}{65} = 6.75](https://tex.z-dn.net/?f=%5Ctext%7BWeighted%20mean%7D%20%3D%20%5Cdisplaystyle%5Cfrac%7B%5Csum%20w_ix_i%7D%7B%5Csum%20w_i%7D%5C%5C%5C%5C%5Csum%20w_ix_i%20%3D%20%2014%285%29%20%2B%2019%286%29%20%2B%2012%287%29%20%2B%209%288%29%20%2B%2011%289%29%20%3D%20439%5C%5C%5C%5C%5Csum%20w_i%20%3D%2014%20%2B%2019%20%2B%2012%20%2B%209%20%2B%2011%20%3D%2065%5C%5C%5C%5C%5Ctext%7BWeighted%20mean%7D%20%3D%20%5Cfrac%7B439%7D%7B65%7D%20%3D%206.75)
Thus, the weighted sample mean is 6.75 cars.
30 dollars would be your initial amount which would be the b part of your equation, y=mx +b. 2r would be the mx part. Your equation would read y=2r+30 and then you would plug in how many rides they went on into the r space to find y