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inessss [21]
3 years ago
13

casey invested $1,225 in a certain bond that pays 19% interest compounded annually. How long will it take for Brad’s investment

to triple ? Explain step by step.
Mathematics
1 answer:
AleksandrR [38]3 years ago
8 0

Answer:

6.32 years

Step-by-step explanation:

To get the time taken to triple the amount invested, we must first establish the compound interest formula. When a principal amount P is invested for a time n at a rate r percent, the amount A after n years may be expressed as

A = P (1 + r)^n

Hence if $1,225 is to triple, the amount will be

= $1,225 *3

= $3,675

The time n for this to happen may be computed through the equation

$3,675 = $1,225 ( 1 + 0.19)^n

3 = 1.19^n

take the log of both sides

log 3 = log 1.19^n

using the law of logarithms that log a^b = b log a

n log 1.19 = log 3

n = log 3 / log 1.19

n = 6.32 years

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Melody had 45. She spent 32.75 on a blouse . Then her mother gave her 15.50. How much money does Melody have now ?
koban [17]

Answer:

Melody have now $27.75

Step-by-step explanation:

We will proceed to solve the problem in parts so that it can be better understand

so

1) Originally Melody had $45

2) She spent $32.75 on a blouse

so

In this moment Melody has --------> $45-$32.75=$12.25

3) Her mother gave her $15.50

so

In this moment Melody has --------> $12.25+$15.50=$27.75

therefore

Melody have now $27.75

5 0
3 years ago
Need help here plss
Ierofanga [76]

Two linear equations can have no solutions, exactly one solution or infinitely many solutions. There will be no solution if the lines are parallel on a graph. There will be exactly one solution if the lines intersect each other on a single point. And finally, there will be infinite solutions if the lines overlap each other perfectly.

A single line however has infinite ordered pair solutions as the line travels infinitely in both directions on the coordinate plane. For example, using the equation y=3x, for any real value of x, we will get a real value for y.

Linear inequalities with two variables have infinitely many solutions. We can use the inequality y>3x as an example. For any real value of x, we will get a real value for y.

I hope this helps!

6 0
3 years ago
How to write words to match the expression
miss Akunina [59]
Three plus twelve multiplied by four
5 0
3 years ago
If today is 0 degrees and tomorrow is doubled the temperature how many degrees is it
dsp73
It would still be 0 because anything times 0 is still 0. 
8 0
3 years ago
A bag contains 1 yellow, 2 blue, 4 green, and 3 red marbles. A marble is drawn and replaced. Then a
AURORKA [14]

Answer:

Step-by-step explanation:

total = 1 + 2 + 4 + 3 = 10

blue then blue = 2/10 * 2/10 = 1/5 * 1/5 = 1/25

green then red = 4/10 * 3/10 = 12/100 = 3/25

5 0
3 years ago
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