Answer:
sqrt(2x/a) = t
Step-by-step explanation:
X = 1/2at^2
Multiply by 2 on each side
2x = 2*1/2at^2
2x =at^2
Divide by a
2x/a=a/a t^2
2x/a =t^2
Take the square root of each side
sqrt(2x/a) =sqrt(t^2)
sqrt(2x/a) = t
Each octave in the piano is composed of 8 keys with the end key overlapping the next one which means the last key is the first key of the next octave. In 52 white keys, there are 7 octaves which is composed of 43 full keys and 7 overlapping keys. Answer to this problem is 7 octaves.
The roses were 20 dollars :) have a good day.
SOLUTION
From the sequence give
–3, 1, 5, 9, . . .
The first term, a = -3
The common difference, d = 4 (gotten by adding 4 to the next term).
The number of terms required n = 6.
Formula for sum of an arithmetic sequence is given by
Substituting these values into the equation above we have
Hence, the answer is 42, option B
