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
IceJOKER [234]
3 years ago
13

The​ U.S.-based motorcycle manufacturer says that it expects to build 139,000 motorcycles this​ year, up from 122,000 last year.

Find the percent of increase in production.
Mathematics
2 answers:
Wittaler [7]3 years ago
5 0

Answer:

The percent increase in production from last year to this year is 13.93%.

Step-by-step explanation:

First, work out the difference (increase) between the two numbers you are comparing.

Increase = This Year Number - Last Year Number

Increase=139,000-122,000

Increase=17,000

Then, divide the increase by the original number and multiply the answer by 100.

% increase = Increase/Last Year Number × 100.

% Increase=17,000/122,000 X100

% Increase=0.1394 X 100

% Increase = 13.93%

Note: If your answer is a negative number then this is a percentage decrease.

NemiM [27]3 years ago
3 0

Solution:

we are given that

The​ U.S.-based motorcycle manufacturer says that it expects to build 139,000 motorcycles this​ year, up from 122,000 last year.

It mean the increased production is 139,000-122,000=17000

The percentage change in production can be found using the formula as below

Percenatge  \ increase=\frac{change}{Initial}*100\\
\\
\text{Substitute the values we get}\\
\\
Percenatge  \ increase=\frac{17000}{122,000}*100\\
\\
\
Percenatge  \ increase=13.93\\

Hence the percentage increase is 13.93.


You might be interested in
Fill in the blanks:
lys-0071 [83]
Reflection across the x-axis, followed by a, ?
3 0
3 years ago
Estimate the rate of change of the parabola at the point x = -2.
lord [1]

Answer:

it is 2 and this is myself so haha

Step-by-step explanation:


6 0
3 years ago
The sum of x and 3/5 is 5/7.
crimeas [40]
We first write the word in math as x+3/5 = 5/7.  Now we cross multiply our fractions and rewrite them with the LCD of 5 and 7. Our equation now looks like x + 21/35 = 25/35.  We simplify our equation by subtracting 21/35 from both sides to get x = 4/35. 4/35 is already in lowest terms so it is our answer.
7 0
3 years ago
Read 2 more answers
Linear function, pls help
True [87]

Answer:

A

Step-by-step explanation:

4 0
2 years ago
In a large lecture class, the professor announced that the scores on a recent exam were normally distributed with a range from 5
iVinArrow [24]

Answer:

The standard deviation of the scores on a recent exam is 6.

The sample size required is 25.

Step-by-step explanation:

Let <em>X</em> = scores of students on a recent exam.

It is provided that the random variable <em>X</em> is normally distributed.

According to the Empirical rule, 99.7% of the normal distribution is contained in the range, <em>μ </em>± 3<em>σ</em>.

That is, P (<em>μ </em>- 3<em>σ </em>< <em>X</em> < <em>μ </em>+ 3<em>σ</em>) = 0.997.

It is provided that the scores on a recent exam were normally distributed with a range from 51 to 87.

This implies that:

P (51 < <em>X</em> < 87) = 0.997

So,

<em>μ </em>- 3<em>σ </em>= 51...(i)

<em>μ </em>+ 3<em>σ </em>= 87...(ii)

Subtract (i) and (ii) to compute the value of <em>σ</em> as follows:

<em>   μ </em>-     3<em>σ </em>=    51

(-)<em>μ </em>+ (-)3<em>σ </em>= (-)87

______________

-6<em>σ </em>= -36

<em>σ</em> = 6

Thus, the standard deviation of the scores on a recent exam is 6.

The (1 - <em>α</em>)% confidence interval for population mean is given by:

CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

The margin of error of this interval is:

MOE = z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

Given:

MOE = 2

<em>σ</em> = 6

Confidence level = 90%

Compute the <em>z</em>-score for 90% confidence level as follows:

z_{\alpha/2}=z_{0.10/2}=z_{0.05}=1.645

*Use a <em>z</em>-table.

Compute the sample required as follows:

MOE = z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\\2=1.645\times \frac{6}{\sqrt{n}}\\n=(\frac{1.645\times 6}{2})^{2}\\n=24.354225\\n\approx 25

Thus, the sample size required is 25.

4 0
3 years ago
Other questions:
  • Help plss:(
    12·1 answer
  • Please help me because I need to turn this on tommorrow
    13·2 answers
  • Factor 7x^2-22x+3. <br><br> I really need help with this. please
    7·2 answers
  • Kedwin can watch movies at home in two ways. he can order unlimited online movies for $10 a month. he could also go to the local
    15·2 answers
  • What's the difference between slope and y intercept
    7·2 answers
  • Right triangles 1-2 and 3 are given with all their angle measures and approximate side lengths.
    13·2 answers
  • Which value is the solution of the equation 8.25r = 554.4?
    8·2 answers
  • Solve the equation x² = 5. (must show equality properties in work so I can earn full credit)
    14·2 answers
  • Calculate the rise and run to find the slope of each line
    9·2 answers
  • What is the length of AC?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!