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adell [148]
3 years ago
14

Antonia is saving for a video game.On the first day,she saves two dollars in her piggy bank.Each day after that,she doubles the

number of dollars she saved on the previous day.How many dollars does she save on the sixth day?
Mathematics
1 answer:
Airida [17]3 years ago
6 0

Answer: she would be having $64 on the sixth day

Step-by-step explanation:

Each day,she doubles the number of dollars she saved on the previous day. This amount of money that she saves each day is increasing in a geometric progression. The formula for the nth term of a geometric progression is

Tn = ar^(n - 1)

Where

a is the first term of the sequence

r is the common ratio

n is the number of terms

To determine how much she saves on the sixth day,

n = 6

a = 2

r = 2

T6 = 2×2^(6 - 1)

T6 = 2 × 2^5

T6 = 64

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a) $500 + $525 = $ 1,025

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Step-by-step explanation:

Compound Interest Equation

A = P(1 + r/n)^nt

Where:

A = Accrued Amount (principal + interest)

P = Principal Amount

I = Interest Amount

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Compound Interest Formulas and Calculations:

Calculate Accrued Amount (Principal + Interest)

A = P(1 + r/n)^nt

Calculate Principal Amount, solve for P

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Calculate rate of interest in decimal, solve for r

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Calculate rate of interest in percent

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4 0
3 years ago
There are 100 seniors and 80 juniors in the Homecoming Parade. The students split up into groups of equal size, to fit on the pa
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Answer:

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Step-by-step explanation:

Number of seniors = 100

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To find number of students that should be on each float, find highest common factor (H.C.F) of 100 and 80

Write prime factorisation of 100 and 80.

100 = 2^2 × 5^2

80 = 2^4 × 5

So,

H.C.F(100, 80) = 2^2 × 5 = 4 × 5 = 20

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20 students should be on each float

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