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puteri [66]
3 years ago
10

If you save one penny on january 1 two pennies on january 2 and three on january 3 and continue this pattern for a year. How man

y pennies will you have
Mathematics
1 answer:
Lunna [17]3 years ago
6 0
The formula you need is: S = (n/2) (2a1 + (n - 1) x d)
so then you plug in the numbers:
S = (365/2) (2 x 1 + (365 - 1) x 1)
then combine like terms:
S = 66795 pennies
A dollar is 100 pennies. Therefore, at the end of the year, the total savings is $667.95.
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inn [45]
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3 years ago
Solve b <br> 3b / 7-1 = 5
ruslelena [56]

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Step-by-step explanation:

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7 0
3 years ago
I need the equation and steps please!
serg [7]
Let d is the number of days of rental car
At Trinity's Tire World, $50 a day plus $75 fee: 50*d + 75
At India's Auto,  $35 a day plus $105 fee: 35*d + 105

To find out after how many days, they both cost the same

50*d + 75 = 35*d + 105
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Answer: after 2 days, they both cost the same amount of money

Proof:

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Hope that helps

3 0
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5 0
2 years ago
How many decameters are there in 14 meters
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