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V125BC [204]
3 years ago
5

Alice is saving her chore money in a bank account. She makes a deposit of $13 in the first month.

Mathematics
1 answer:
Elis [28]3 years ago
6 0

Answer:

Option (3) and Option (5)

Step-by-step explanation:

Alice invested $13 in the first month.

Then she deposits $25 every month.

Therefore, sequence formed by the deposit will be an arithmetic sequence.

First term of the sequence will be,

A_1=13

Since, recursive formula formula of a sequence is given by the formula,

A_n=A_{(n-1)}+d

Where 'd' = common difference in each term of the sequence

Recursive formula for the sequence will be,

A_n=A{(n-1)}+25

Since, explicit formula for the arithmetic sequence is represented by the formula,

A_n=A_1+(n-1)d

where n = number of term

d = common difference

Therefore, nth term of the sequence formed will be represented by the explicit formula,

A_n=13+(n-1)25

A_{10}=13+(10-1)25

      = 13 + 225

      = 238

A_{8}=13+(8-1)25

     = 188

A_{12}=13+(12-1)25

      = 288

Therefore, Option (3) and Option (5) will be the answer.

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A rectangle has a length that is 2 meters more than the width. The area of the rectangle is 288 square meters. Find the dimensio
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Answer:

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Step-by-step explanation:

The area of a rectangle is found by A = l*w. Since the length here is 2 more than the width or 2 + w and the width is w, substitute these values and A = 288 to solve for w.

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To solve for w, move 288 to the other side by subtraction. Then factor and solve.

w^2 + 2w  - 288 = 0 \\(w +18)(w-16) = 0\\

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A machine wheel spins at a rate of 500 revolutions per minute. If the wheel has a diameter of 80 centimeters, what is the angula
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