-16t² + 180t
-16(2)² + 180(2)
-64 + 360
The fireworks height after 2 seconds is 296 feet
The sum of the 8 terms of the series 1-1-3-5- ... -13 is -48
The given sequence is:
1,-1,-3, . . -13
and there are 8 terms.
The related series of this sequence is:
1-1-3-5- ... -13
Notice that the series is an arithmetic series with:
first term, a(1) = 1
common difference, d = -1 - (1) = -2
last term, a(8) = -13
To find the sum of the series, use the sum formula:
S(n) = n/2 [(a(1) + a(n)]
Substitute n = 8, a(1) = 1, a(n) = a(8) = -13 into the formula:
S(8) = 8/2 [1 + (-13)]
S(9) = 4 . (-12) = -48
Learn more about sum of a series here:
brainly.com/question/14203928
#SPJ4
Answer:
The current price is $3000 and price after 9 years from today is $4054.
Step-by-step explanation:
The future price pt(in dollars) of a certain item can be modeled by the following exponential function
where, t is the number of years from today.
Substitute t=0 to find the current price.
Therefore the current price is $3000.
Substitute t=9 to find the price after 9 years from today.
Therefore the price after 9 years from today is $4054.
Answer:
My guess would be
C. multiplicative identity property