2 years ago

4. The rental for a television set changed from $80 per year to $8 per month

Mathematics

1 answer:

Olegator [25]2 years ago

6 0

Answer:

16%

Step-by-step explanation:

rental charge per year = $80

rental charge at the rate $8 per year = 8 * 12 = 96

the increased amount = 96 - 80 = 16

% = 16 / 100 = 16%

You might be interested in

A random sample of 8 recent college graduates found that starting salaries for architects in New York City had a mean of $42,653

ycow [4]

Answer:

C. (36337.32, 48968.68)

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{9114}{\sqrt{8}} = 6315.68$

The lower end of the interval is the sample mean subtracted by M. So it is 42653 - 6315.68 = 36337.32.

The upper end of the interval is the sample mean added to M. So it is 42653 + 6315.68 = 48968.68.

So the correct answer is:

C. (36337.32, 48968.68)

3 0

1 year ago

The function D(t) defines a traveler’s distance from home, in miles, as a function of time, in hours. Which times and distances

Neporo4naja [7]

Answer:

B, D, E

Step-by-step explanation:

7 0

1 year ago

Read 2 more answers

Fiona's school is in the shape of a triangle, with three hallways connecting the corners. Fiona enters the building and walks 90

laiz [17]

Answer: between 30 yards and 60 yards

Step-by-step explanation:

6 0

1 year ago

You've run 250 ft of cable that has a loss rate of 3.6 dB per 100 ft. what is your total loss?

Leviafan [203]

Answer:

2.5 dB/100 ft

Explanation:

If 5 dB was lost after 200 ft of cable and 100 ft is half of 200 ft, then the rate of loss should be 2.5 dB per 100 ft.

Step-by-step explanation:

5 0

1 year ago

What is 6×9×(-5) equal to?

Mumz [18]

$6*9*(-5) = -270
$

8 0

2 years ago