Is 210879 divisible by 3
2 answers:
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Answer:
The 64th term of the arithmetic sequence is -1075.
Step-by-step explanation:
Arithmetic sequence:
In an arithmetic sequence, the difference between consecutive terms, called common difference, is always the same.
The nth term of an arithmetic sequence is given by:
In which is the first term.
−4,−21,−38
First term -4, so
Common difference of
Thus
Find the 64th term of the arithmetic sequence
This is . So
The 64th term of the arithmetic sequence is -1075.
Answer:
Minimun amount = $95,48
Step-by-step explanation:
We need to buy the book that costs 12 galleons, 16 sickles, 25 knuts.
At the bank we need to exchange our dollars. We know that:
1 galleon = $7,35
And:
1 galleon = 17 sickles
1 sickle = 29 knuts
First we use a rule of three to convert everything to galleons:
1 galleon = 17 sickles ⇒ 1 sickle = 1/17 galleons
1 sickle = 1/17 galleons = 29 knuts ⇒ 1 knut = 1/493
And now we need to convert every wizarding money to dollars by using our reference above:
1 galleon = $7,35
1 sickle = 1/17 galleons = $7,35 / 17 ≅ $0,4323
1 knut = 1/493 galleons = $7,35 / 493 ≅ $0,0149
Finally we calculate the cost of the book:
Galleons: 12 x $7,35 = $88,2
Sickles: 16 x $0,4323 = $6,91
Knuts: 25 x $0,0149 = $0,37
Cost of the book = $88,2 + $6,91 + $0,37 = $95,48
So this is the minimun amount of dollars you need to exchange to purchase the book.
The number is written as
To evaluate the power of ten, just remember that 10 to the power of n is a one followed by n zeroes, so ten to the sixth power is a one followed by six zeroes:
So, the number is
When you multiply a number by a power of ten, you simply add the same number of zeroes after the number. So, in this case, you only need to add six zeroes after 93:
which is 93 millions.