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olganol [36]
3 years ago
13

PLZ I need help

Mathematics
2 answers:
stealth61 [152]3 years ago
8 0

Answer: it will take 4.8 years

Step-by-step explanation:

Initial amount invested is $5000. This means that the principal is

P = 5000

It was compounded annually. This means that it was compounded once in a year. So

n = 1

The rate at which the principal was compounded is 15.6%. So

r = 15.6/100 = 0.156

The formula for compound interest is

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

A = total amount in the account at the end of t years. The amount after t years would be 2 × 5000 = $10000. It means that A = $10000

Therefore

10000 = 5000 (1+0.156/1)^1×t

10000/5000 = (1.156)^t

2 = (1.156)^t

Take log of both sides

log 2 = log (1.156)^t

0.301 = tlog1.156 = 0.063t

t = 0.301/0.063 = 4.8

enot [183]3 years ago
4 0

Answer:

5 years  to the nearest year.

Step-by-step explanation:

The formula for Compound Interest with an annual interest payment is

A = P(1 + r/100)^t        where A = Amount after t years, P = Initial amount, r = percentage rate.

We have the equation:

10,000 = 5,000(1 + 15.6/ 100)^t

10000 = 5000 * 1.156^t

1.156^t = 2

t ln 1.156 = ln 2

t = ln2 / ln 1.156

t = 4.78

Answer is 5 years.

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fenix001 [56]

Answer:

the answer is 10.7

Step-by-step explanation:

136.96 \div 12.8

that show give you your answer

5 0
2 years ago
Tickets for a concert cost$10 each if you order them on line but you must pay a service change of $8 per order. The tickets are
Sloan [31]

Answer:

Step-by-step explanation:

10

8 0
4 years ago
The latest mystery novel cost $24 the table shows the sales of that this novel by a bookstore what was the dollar amount of the
Ket [755]

Answer:

  $3768

Step-by-step explanation:

The amount of sales will be the product of the selling price of each book and the number of books sold.

  sales = book price × number of books

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  sales = $3768 . . . . . . . . . . . sales on Saturday

4 0
3 years ago
EDIT: This is actually for Middle School mathematics, I apologize.
monitta
I am going to assume it is 2(3)^x since that matches the values in the table. As for finding the answer, take a close look at both tables and see which x and y value from both have the same answer. 
7 0
4 years ago
lilli has $3.65 comprised of quarters and dimes floating on the bottom of her bag she has five more dimes than twice her quarter
marta [7]

Answer:

= 3.65.

Step-by-step explanation:

You know that Tom has 23 coins in total. That means the number of dimes and the number of quarters equals 23.

D + Q = 23

You also know that the total value of the coins is $3.65. A dime is worth $0.10 and a quarter is worth $0.25, so:

0.10*D + 0.25*Q = 3.65

That says that 10 cents per dime times the number of dimes, plus 25 cents per quarter times the number of quarters is three dollars and sixty-five cents.

So you have a system of linear equations:

D + Q = 23

0.10D + 0.25Q = 3.65

I'm going to multiply the bottom row by 100 to clear the decimals.

D + Q = 23

10D + 25Q = 365

Now I can multiply the top row by -10 to eliminate the D terms

-10D - 10Q = -230

10D + 25Q = 365

________________

0D + 15Q = 135

15Q = 135

Q = 9

Tom has 9 quarters.

If D + Q = 23, and Q = 9, then:

D + 9 = 23

D = 14

Tom has 14 dimes.

Always good to double check:

9 quarters is worth $2.25. 14 dimes is worth $1.40. These should sum to $3.65.

2.25 + 1.40

8 0
3 years ago
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