1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pychu [463]
3 years ago
8

roberta deposited 4,790.23 into a saving account with an interest rate of 3.8% compunded twice a year. about how long will it ta

kefor the account to be worth 9,000?
Mathematics
2 answers:
Margarita [4]3 years ago
7 0
The answer to this question would be: 17 years
The <span>interest rate is 3.8% compounded twice a year. The function of the saving account amount would be:
f(x)= </span><span>4,790.23* (1+ 0.038/2)^2x
</span>f(x)= 4,790.23* (1.019)^2x

Then for f(x)= 9,000 the x value would be:
9,000= 4,790.23* (1.019)^2x
9,000/4,790.23= (1.019)^2x
1.8788= (1.019)^2x
<span>2x=34
</span>x=17
Julli [10]3 years ago
3 0
4009 is the answer I got
You might be interested in
One number is 3 less than a second number. Twice the second number is 14 more than 3 times the first. Find the two numbers
Butoxors [25]

Answer:

Number 1 is 10 and number 2 is 7

14/2 = 7

7 + 3 = 10

8 0
3 years ago
When an oil tank is 7/12 full, it contains 5 1/4 gallons. How many gallons does it hold when full
blondinia [14]
<h3>Answer:</h3>

The tank can hold up to 9 gallons.

Quick Review:

By doing the inverse of 7/12, 12/7, when you multiply it, you'll get a value of 1.

7/12 * 12/7 = 1

Doing the Problem:

By multiplying 5 1/4 by 12/7, you'll get the answer. But first, convert 5 1/4 into an improper fraction.

5 1/4 ---> 21/4

Okay, lets go!

21/4 * 12/7 = 252/28

<u>When reduced, this gives you the answer 9/1, or 9 gallons.</u>

Hope that helps, :)

6 0
3 years ago
Name the marked angle in 2 different ways.
ch4aika [34]
Angle KIH and angle HIK
3 0
3 years ago
Read 2 more answers
Please Help me and Thank you
astra-53 [7]

Answer:

Step-by-step explanation:

The answer is C

3 0
2 years ago
Read 2 more answers
In a certain​ year, brand A of​ heart-rate watch cost ​$39.99 and brand B cost ​$59.99. A nonprofit community health organizatio
Oksi-84 [34.3K]

Answer:

Brand A = 21 heart-rate watches.

Brand B = 13 heart-rate watches.

Step-by-step explanation:

Let A be the number of Brand A heart watches and B be the number of Brand B heart watches.

We have been given that a nonprofit community health organization purchased 34 ​heart-rate watches for use at a wellness center.

We can represent this information in an equation as:

A+B=34...(1)

We have been given that in a certain​ year, brand A of​ heart-rate watch cost ​$39.99 and brand B cost ​$59.99 and the organization spent ​$1619.66 for the​ watches.

We can represent this information in an equation as:

39.99*A+59.99*B=1619.66...(2)

We will use substitution method to solve our system of equations.

From equation (1) we will get,

A=34-B

Substituting A=34-B in equation(2) we will get,

39.99*(34-B)+59.99*B=1619.66

1359.66-39.99*B+59.99*B=1619.66

-39.99*B+59.99*B=1619.66-1359.66

20*B=260

B=\frac{260}{20}

B=13

Therefore, the organisation purchased 13 heart-rate watches of brand B.

Now let us substitute B=13 in equation (1).

A+13=34

A+13-13=34-13

A=21

Therefore, the organisation purchased 21 heart-rate watches of brand A.

8 0
3 years ago
Other questions:
  • If the length of each side of a cube is doubled, is the surface area doubled? Use an example to support your answer
    8·1 answer
  • Wiil mark bianleast plz plz hlpe
    8·2 answers
  • Problems 20-22 has me mixed up​
    6·1 answer
  • Please help :((((((((((. Will give brainliest!
    8·1 answer
  • 7(8i+9) (Show work please)
    14·1 answer
  • What is 2.53 rounded to the nearest whole number
    7·1 answer
  • Cos45*/sec30*+cosec60*​
    10·2 answers
  • What is the value of y in the sequence below?<br> 2,y,18, -54,162,
    14·1 answer
  • An angle measures 68° less than the measure of its complementary angle. What is the measure of each angle?
    8·1 answer
  • Write an equation that describes the function.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!