It'd be easier to do #18 if y ou were to break it up:
14* (first term + 14th term)
Sum from n=1 to 14 of n = S = ---------------------------------
14 2
14(1+14)
= ---------------- = 7(15) = 105
2
The sum of twice that is 210. The sum of "1 from n=1 to n=14" is just 14.
The final sum is 210 + 14 = 224 (answer)
Answer:sum: -1/6
Step-by-step explanation:
Ok so I’m assuming the question is how the tall is we need to find the Angle of the sun so
Student : 175
Shadow: 2.3
Hypotenuse: 175.0151136
Using -cos(175/175.0151136) we find the
Suns angle: .753 Above him/her
Our tree’s shadow:8.2
Using the suns angle we use cos(x
Answer:
5x + y = -48
Step-by-step explanation:
(y + 3)/(x + 9) =m
=> y + 3 = -5x -45
=> 5x + y + 48 = 0
