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
CaHeK987 [17]
3 years ago
13

Kelly's parents plan to put money into an account and leave it there for 16 years before she goes to college. If they put $1000

into an account that earns 3.75% interest how much will be in Kelly's account when it is time for her to go to college?
Mathematics
1 answer:
babymother [125]3 years ago
3 0

z = k \times (1 +  \frac{p}{100} ) {}^{n}
in this case

z = 1000 \times (1 +  \frac{3.75}{100} ) {}^{16}  \\  \\  = 1802.23
You might be interested in
Help please 5 points
Mice21 [21]

Answer:

the answer to this question is b

5 0
3 years ago
The estimated daily living costs for an executive traveling to various major cities follow. The estimates include a single room
Alexandra [31]

Answer:

\bar x = 260.1615

\sigma = 70.69

The confidence interval of standard deviation is: 53.76 to 103.25

Step-by-step explanation:

Given

n =20

See attachment for the formatted data

Solving (a): The mean

This is calculated as:

\bar x = \frac{\sum x}{n}

So, we have:

\bar x = \frac{242.87 +212.00 +260.93 +284.08 +194.19 +139.16 +260.76 +436.72 +355.36 +.....+250.61}{20}

\bar x = \frac{5203.23}{20}

\bar x = 260.1615

\bar x = 260.16

Solving (b): The standard deviation

This is calculated as:

\sigma = \sqrt{\frac{\sum(x - \bar x)^2}{n-1}}

\sigma = \sqrt{\frac{(242.87 - 260.1615)^2 +(212.00- 260.1615)^2+(260.93- 260.1615)^2+(284.08- 260.1615)^2+.....+(250.61- 260.1615)^2}{20 - 1}}\sigma = \sqrt{\frac{94938.80}{19}}

\sigma = \sqrt{4996.78}

\sigma = 70.69 --- approximated

Solving (c): 95% confidence interval of standard deviation

We have:

c =0.95

So:

\alpha = 1 -c

\alpha = 1 -0.95

\alpha = 0.05

Calculate the degree of freedom (df)

df = n -1

df = 20 -1

df = 19

Determine the critical value at row df = 19 and columns \frac{\alpha}{2} and 1 -\frac{\alpha}{2}

So, we have:

X^2_{0.025} = 32.852 ---- at \frac{\alpha}{2}

X^2_{0.975} = 8.907 --- at 1 -\frac{\alpha}{2}

So, the confidence interval of the standard deviation is:

\sigma * \sqrt{\frac{n - 1}{X^2_{\alpha/2} } to \sigma * \sqrt{\frac{n - 1}{X^2_{1 -\alpha/2} }

70.69 * \sqrt{\frac{20 - 1}{32.852} to 70.69 * \sqrt{\frac{20 - 1}{8.907}

70.69 * \sqrt{\frac{19}{32.852} to 70.69 * \sqrt{\frac{19}{8.907}

53.76 to 103.25

8 0
3 years ago
t a fruit stand, for every 5 apples sold there are 4 oranges sold. What is the ratio of oranges sold to apples sold?
torisob [31]

Answer:

4:5

Step-by-step explanation:

since there are 4 oranges bought for every 5 apples, the ratio of oranges to apples sold is 4:5

6 0
3 years ago
Which weighs more, a pound of feathers or a pound of bricks?
myrzilka [38]

Answer:

They both weigh the same amount.

Step-by-step explanation:

A pound of feathers would land and wouldn't hurt, but a pound of bricks would hurt.

Since they both are exactly one pound, if that is the only question and it's a one-part question then there's your answer.

7 0
3 years ago
Write an expression for four times the product of -9 and x and then simplify it.
katrin2010 [14]
4(-9*x)

Multiply the two numbers
-36x

Final answer: -36x
5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the following expressions using logarithm and Antilogarithm .
    14·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
    13·1 answer
  • What type of number is 3π+ 1?
    13·2 answers
  • In 7,034.56, in which place in the 7
    8·2 answers
  • Which function has a simplified base of 4? f(x) = 2 f(x) = 2 f(x) = 4 f(x) = 4
    14·2 answers
  • Manuel has a remaining balance of $563 on his credit card. His credit card company has an APR of 15 percent. How much will Manue
    15·2 answers
  • Find square root of 7921<br>​
    8·2 answers
  • What is the slope, Please help ASAP
    9·2 answers
  • Pls answer quick i will mark brainliest
    12·2 answers
  • The total number of degrees in the center is 360°. if all five vertex angles meeting at the center are congruent, what is the me
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!