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
Tom [10]
3 years ago
12

In April 2008, an audio CD was available for $14.01. the list price (full price) of the CD was $19.32. What was the percent disc

ount?
Mathematics
1 answer:
8_murik_8 [283]3 years ago
4 0
19.30 - ( p / 100 )*19.32 = 14.01 ;
19.30( 1 - p/100 ) = 14.01 ;
1 - p/100 = 14.01 / 19.30
1 - p / 100 = 0.72 ;
p/100 = 1 - 72 / 100 ;
p/100 = 28 / 100 ;
p = 28 ;
The percent discount is 28% ;
You might be interested in
Conduct the appropriate hypothesis test and compute the test statistic. A company that produces fishing line undergoes random te
andre [41]

Answer:

Option D) Yes, because the test statistic is -2.01

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 30 pound

Sample mean, \bar{x} = 29.1 pounds

Sample size, n = 20

Alpha, α = 0.05

Sample standard deviation, s =  2 pounds

First, we design the null and the alternate hypothesis

H_{0}: \mu = 30\text{ pounds}\\H_A: \mu < 30\text{ pounds}

We use one-tailed(left) t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{29.1 - 30}{\frac{2}{\sqrt{20}} } = -2.012

Now,

t_{critical} \text{ at 0.05 level of significance, 19 degree of freedom } = -1.729

Since,                    

t_{stat} < t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. Thus, there were enough evidence to conclude that the fishing line breaks with an average force of less than 30 pounds.

Option D) Yes, because the test statistic is -2.01

5 0
3 years ago
For this question I am sure the answer is 81% as you divide 45 and 55. However, it is stating my answer is incorrect even though
77julia77 [94]

Answer:

it says round to the nearest 10th so it wouldn't be 81, it would be 81.8%

8 0
2 years ago
What is this and how do i solve
Troyanec [42]

Answer:

<h2>x = 20</h2>

Step-by-step explanation:

The angles 7x° and (x + 20)° are supplementary angles.

Supplementary angles add up to 180°.

Therefore we have the equation:

7x + (x + 20) = 180

7x + x + 20 = 180            <em>subtract 20 from both sides</em>

8x = 160         <em>divide both sides by 8</em>

x = 20

8 0
3 years ago
Is y – 4x = 9 a function?
Alex787 [66]
No i don’t think soooo

5 0
3 years ago
Write 3 tens 9 ones in another way
Vsevolod [243]
3 tens is 3 * 10 = 30
9 ones is 9 * 1 = 9
30 + 9 = 39
Answer: 39

5 0
3 years ago
Other questions:
  • Is this right? you’re supposed to find FH
    11·1 answer
  • Which choice is the common difference between the terms of this arithmetic sequence?4x + 7y, 8x + 2y, 12x + -3y, 16x - 8y, 20x -
    13·1 answer
  • On a map the scale in four inches to one mile. The distance on the map from Huntington to Northport is ten inches. How many mile
    8·1 answer
  • If the zeroes of the polynomial x^3-14x^2+37x-60 are alpha,beta,gamma,then find
    8·1 answer
  • Help me with this math question please I'm giving away brainliests​
    14·1 answer
  • The ratio of boys to girls on the school swim team is 5:11. If there are 80 students on the swim team, how many of them are boys
    15·1 answer
  • What is the diffrence between 48 degrees Fahrenheit and -13 degrees fahrenheit​
    8·1 answer
  • Help pls pic is below pls help​
    13·1 answer
  • Triangle DEF has vertices D(0,0), E(7,0), and F(3,7).
    13·1 answer
  • Need help asappppppp
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!