Answer:
-55
Step-by-step explanation:
2nd term=> -1 + -2 × (2 - 1)
3rd term=> -1 + -2 × (3 - 1)
:
28th term=> -1 + -2 × (28 - 1)
=> -1 - 54 = -55
check the picture below.
so the playground is really just 3 rectangles and one triangle, now the triangle has a base of 8 and a height of 6. We can simply get the area of each figure, sum them up and that's the area of the playground.
![\bf \stackrel{\textit{area of the triangle}}{\cfrac{1}{2}(8)(6)}~~+~~\stackrel{\textit{rectangle}}{(8\cdot 8)}~~+~~\stackrel{\textit{rectangle}}{(6\cdot 6)}~~+~~\stackrel{\textit{rectangle}}{(9\cdot 4)} \\\\\\ 24+64+36+36\implies 160](https://tex.z-dn.net/?f=%20%5Cbf%20%5Cstackrel%7B%5Ctextit%7Barea%20of%20the%20triangle%7D%7D%7B%5Ccfrac%7B1%7D%7B2%7D%288%29%286%29%7D~~%2B~~%5Cstackrel%7B%5Ctextit%7Brectangle%7D%7D%7B%288%5Ccdot%208%29%7D~~%2B~~%5Cstackrel%7B%5Ctextit%7Brectangle%7D%7D%7B%286%5Ccdot%206%29%7D~~%2B~~%5Cstackrel%7B%5Ctextit%7Brectangle%7D%7D%7B%289%5Ccdot%204%29%7D%0A%5C%5C%5C%5C%5C%5C%0A24%2B64%2B36%2B36%5Cimplies%20160%20)
The mean you have to add up your numbers first then divide them by the amount of numbers you have .ex. 1+2+3 is 6 then divide so 6÷3 =3
Median is the middle number in list. So put them in order then muddle number is your median. If you have two numbers left add them and divide by 2. That will be your median.
Answer:
150
Step-by-step explanation: