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
choli [55]
3 years ago
5

The graph shows how the values of two used cars changed during a 10 year period?

Mathematics
1 answer:
KonstantinChe [14]3 years ago
7 0

Answer:

$9,000

Step-by-step explanation:

If you look at the graph the lines intercept just below the 10 which is $10,000 so that means the answer would be $9,000

You might be interested in
Which of the following inequalities are true A.10 < 9, B. 9 < 10, C. 10 > 9, D. 9 (is less than or equal to ) 10
Thepotemich [5.8K]

Answer:

B. 9 < 10,  

C. 10 > 9,  

D. 9 (is less than or equal to ) 10

Step-by-step explanation:

A.10 < 9,   not true  10 is greater than 9

B. 9 < 10,   true  9 is less than 10

C. 10 > 9,   true 10 is greater than 9

D. 9 (is less than or equal to ) 10  true 9 is less than or equal to 10

5 0
3 years ago
A triangle who has two sides to the links of 7 AM and 12 PM which of the following wants to represent the length of the third si
IgorLugansk [536]

Answer:

What do you mean by writing time?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
"A manufacturer of automobile batteries claims that the average length of life for its grade A battery is 55 months. Suppose the
STALIN [3.7K]

Answer:

\\ P(z>-2) = 0.97725 or P(x>49) is about 97.725% (or being less precise 97.5% using the <em>empirical rule</em>).

Step-by-step explanation:

We solve this question using the following information:

  1. We are dealing here with <em>normally distributed data</em>, that is "<em>the frequency distribution of the life length data is known to be mound-shaped</em>".
  2. The normal distribution is defined by two parameters: the population mean (\\ \mu) and the population standard deviation (\\ \sigma). In this case, we have that \\ \mu = 55 months, and \\ \sigma = 3 months.
  3. To find the probabilities, we have to use the <em>standard normal distribution</em>, which has \\ \mu = 0 and \\ \sigma = 1. The probabilities for this distribution are collected in the <em>standard normal table</em>, available in Statistics books or on the Internet. We can also use statistics programs to find these probabilities.
  4. For most cases, we need to use the <em>cumulative standard normal table, </em>and for this we have to previously "transform" a raw score (x) into a z-score using the next formula: \\ z = \frac{x - \mu}{\sigma} [1]. A z-score tells us the distance from the mean that a raw score is from it in <em>standard deviations units</em>. If this value is <em>negative</em>, the raw score is <em>below</em> the mean. Conversely, a <em>positive</em> value indicates that it is <em>above</em> the mean.
  5. The <em>cumulative standard normal table </em>is made for positive values of z. Since the normal distribution is <em>symmetrical</em> around the mean, we can find the negative values of z using this formula: \\ P(z [2].

Having all this information, we can solve the question.

<h3>The percentage of the manufacturer's grade A batteries that will last more than 49 months</h3>

<em>First Step: Use formula [1] to find the z-score of the raw score x = 49 months</em>.

\\ z = \frac{49 - 55}{3}

\\ z = \frac{-6}{3}

\\ z = -2

This means that the raw score is represented by a z-score of \\ z = -2, which tells us that it is<em> two standard deviations below</em> the population mean.

<em>Second Step: Consult this value in the cumulative standard normal table for z = 2 and apply the formula [2] to find the corresponding probability.</em>

For a z = 2, the probability is 0.97725.  

Then

\\ P(z

\\ P(z2)

\\ P(z2)

But we <em>are not asked</em> for P(z<-2) but for P(z>-2) = P(x>49). This probability is the <em>complement</em> of the previous result, that is

\\ P(z>-2) = 1 - P(z

\\ P(z>-2) = 1 - 0.02275

\\ P(z>-2) = 0.97725

That is, the "<em>percentage of the manufacturer's grade A batteries will last more than 49 months</em>" is

\\ P(z>-2) = 0.97725 or about 97.725%

A graph below shows this result.

Notice that if we had used the <em>68-95-99.7 rule</em> (also known as the <em>empirical rule</em>), that is, in a normal distribution, the interval between <em>one standard deviation below and above the mean</em> contains, approximately, 68% of the observations; the interval between <em>two standard deviations below and above the mean</em> contains, approximately, 95% of the observations; and the interval between <em>three standard deviations</em> below and above the mean contains, approximately, 99.7% of the observations, we could have concluded that 2.5 % of the manufacturer's grade A batteries will last <em>less</em> than 49 months, and, as a result, 1 - 0.025 = 0.975 or 97.5% will last more than 49 months.

We can conclude that with a less precise answer (but faster) because of the <em>symmetry of the normal distribution</em>, that is, 1 - 0.95 = 0.05. At both extremes we have 0.05/2 = 0.025 or 2.5% and we were asked for P(x>49) = P(z>-2) (see the graph below).

6 0
3 years ago
A low calorie dinner has 480 calories in an 9 ounce serving. What is the unit rate in simplest form? 9/48 160/3 48/9 3/160
LenaWriter [7]

Answer:Hi, the correct answer is \frac{160}{3}.

Step-by-step explanation:

 As you are being asked for rate and the importat value is the number of calories consumed. We need to simplify the fraction \frac{480 calories}{9 ounce} . Then we simplify.

Note that 480 is divisible by 3 and 9 as well. 480/3 = 160 and 9/3 = 3. Therefore, 480/9 = 160/3.

8 0
3 years ago
Find the solutions x2 = 27​
Aneli [31]

Answer:

27  divided by 3 is 9

27 divided by 2 is 13.5

x = 13.5

Re written...

(13.5)2 = 27

make sense?

7 0
2 years ago
Other questions:
  • The mean of five numbers is 25, what is their sum?
    9·1 answer
  • Given m || n, find x.
    14·1 answer
  • What is a unit rate math
    10·1 answer
  • the legs of a right triangle are 18 cm and 80 cm. what is the length of the hypotenuse? 82 cm 85 cm 89 cm 98 cm
    7·2 answers
  • What is the result of converting 20 ounces into pounds
    7·2 answers
  • Which of the following describes a rectangular prism?
    11·2 answers
  • If y+1/y=5 then show that (y^3+1/y^3)=110
    5·1 answer
  • A rhombus has an area of 440 square meters and a base of 22 meters. What is the height?
    11·2 answers
  • Please help!!<br> Find the value of the variables. Leave in simplest radical form.
    6·1 answer
  • Jason is considering two different jobs that he has been offered and he likes the atmosphere and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!