X= -1,0,2,2. y=10,15,28,49

If $500 yields $43.49 in simple interest over 7 years, what is the annual rate?

Annette [7]

Answer:

1.24 %

Step-by-step explanation:

500 * x * 7 = 43.49

x = 43.49/(7*500) = .0124 1.24 %

8 0

3 years ago

What Matches with vertical bar graph??

Wewaii [24]

Answer:

6

Step-by-step explanation:

7 0

3 years ago

49 rounded to the nearest whole percent

viva [34]

The answer is 50%

Step by step

5 0

3 years ago

Which table represents a function?

natta225 [31]

A function must have one y-value for any given x-value.

Usually, if you see the same x-value in the x-column more than once, that's not going to be a function, because that usuall makes a single x-value pair with more than one y-value.

This would be NOT be a function, because x-value of 3 is paired with two different y-values.

x | y

3 7

4 8

3 9

6 7

Can you identify the function?

3 0

3 years ago

According to a recent survey, 40% of people marry their first love. A counselor selects a random sample of 50 adults and asks th

Svetllana [295]

Using the normal approximation to the binomial, it is found that there is a 0.0041 = 0.41% probability that at most 10 of them married their first love.

<h3>Normal Probability Distribution </h3>

In a normal distribution with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

It measures how many standard deviations the measure is from the mean.

After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

The binomial distribution is the probability of x successes on n trials, with p probability of a success on each trial. It can be approximated to the normal distribution with $\mu = np, \sigma = \sqrt{np(1-p)}$ , as long as $np \geq 10$ and $n(1 - p) \geq 10$ .

In this problem:

40% of people marry their first love, hence $p = 0.4$ .

A sample of 50 adults is taken, hence $n = 50$ .

For the approximation, the mean and the standard deviation are given by:

$\mu = np = 50(0.4) = 20$

$\sigma = \sqrt{np(1-p)} = \sqrt{50(0.4)(0.6)} = 3.4641$

Using continuity correction, the probability that at most 10 of them married their first love is $P(X \leq 10 + 0.5) = P(X \leq 10.5)$ , which is the p-value of Z when X = 10.5.

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{10.5 - 20}{3.4641}$

$Z = -2.74$

$Z = -2.74$ has a p-value of 0.0041.

0.0041 = 0.41% probability that at most 10 of them married their first love.

To learn more about the normal approximation to the binomial, you can take a look at brainly.com/question/14424710

7 0

2 years ago