Answer:
1
Step-by-step explanation:
-2m+9=7
-2m=7-9
-2m=-2
m=-2/-2
m=1
-2*1+9=7
-2+9=7
(9-2=7)
m=1
1490/4 =372.5................
![\bf \textit{circumference of a circle}\\\\ C=2\pi r\qquad r=radius=\frac{diameter}{2}\\\\ -----------------------------\\\\ \begin{array}{lcccclllll} &radius&\$&Cmfc&\frac{Cmfc}{\$}\\ &---&---&-----&-----\\ \textit{Baby Bear}&6&10&2\pi \cdot 6&\frac{2\pi \cdot 6}{10}\\\\ \textit{Mama Bear}&8&12.50&2\pi \cdot 8&\frac{2\pi \cdot 8}{12.50}\\\\ \textit{Papa Bear}& \begin{array}{llll} diameter=18\\ radius=\frac{18}{2}=9 \end{array}&17&2\pi \cdot 9&\frac{2\pi \cdot 9}{17} \end{array}](https://tex.z-dn.net/?f=%5Cbf%20%5Ctextit%7Bcircumference%20of%20a%20circle%7D%5C%5C%5C%5C%0AC%3D2%5Cpi%20r%5Cqquad%20r%3Dradius%3D%5Cfrac%7Bdiameter%7D%7B2%7D%5C%5C%5C%5C%0A-----------------------------%5C%5C%5C%5C%0A%0A%5Cbegin%7Barray%7D%7Blcccclllll%7D%0A%26radius%26%5C%24%26Cmfc%26%5Cfrac%7BCmfc%7D%7B%5C%24%7D%5C%5C%0A%26---%26---%26-----%26-----%5C%5C%0A%5Ctextit%7BBaby%20Bear%7D%266%2610%262%5Cpi%20%5Ccdot%206%26%5Cfrac%7B2%5Cpi%20%5Ccdot%206%7D%7B10%7D%5C%5C%5C%5C%0A%5Ctextit%7BMama%20Bear%7D%268%2612.50%262%5Cpi%20%5Ccdot%208%26%5Cfrac%7B2%5Cpi%20%5Ccdot%208%7D%7B12.50%7D%5C%5C%5C%5C%0A%5Ctextit%7BPapa%20Bear%7D%26%0A%5Cbegin%7Barray%7D%7Bllll%7D%0Adiameter%3D18%5C%5C%0Aradius%3D%5Cfrac%7B18%7D%7B2%7D%3D9%0A%5Cend%7Barray%7D%2617%262%5Cpi%20%5Ccdot%209%26%5Cfrac%7B2%5Cpi%20%5Ccdot%209%7D%7B17%7D%0A%5Cend%7Barray%7D)
notice, Papa Bear is 18inches in diameter, but radius is half that
and "edge per dollar" simply means, how much circumference per dollar
or
Answer:
3000 bags
Step-by-step explanation:
In this case we must apply the formula of the mean, which would be the sum of the values divided by the amount of data is the mean:
m = (a1 + a2 ... an) / n
In this case we know the mean, we must know the 1987 data, therefore:
Let x be the number of bags sold in 1987, replacing in the previous equation:
2100 = (1800 + 1500 + x) / 3
2100 * 3 = 3300 + x
x = 6300 - 3300
x = 3000
Therefore, for the average to be a total of 2100 bags in those 3 years, the amount of bag sold in 1987 must have been 3000 bags