How many ways can 12 DVDs be arranged on a shelf? .
1 answer:
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Answer:
see the attachment
Step-by-step explanation:
The function can be ...
D(t) = A +Bcos(C(t-p))
where A is the average depth (55+12)/2 = 33.5 cm,
B is the peak deviation from average, 55 -33.5 = 21.5 cm,
C is the horizontal scale factor (2π/T) = (2π/3) for a period (T) of 3 seconds,
and p is the phase offset, given as 1.1 seconds.
The function is ...
D(t) = 33.5 +21.5cos(2π/3·(t -1.1))
Answer:
Alvin invested $110 at rate of 7% and invested $870 at rate of 5%
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Interest Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem
Let
x------> the amount of money invested at rate of 5%
At rate of 7%
we have
At rate of 5%
we have
substitute in the formula
therefore
Alvin invested ($870-$760)=$110 at rate of 7%
Alvin invested $870 at rate of 5%