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
ra1l [238]
3 years ago
7

an airplane model has a scale of 1 to 30. if the model has a length of 14 inches, what is the actual length of the airplane in f

eet?
Mathematics
1 answer:
Dmitry_Shevchenko [17]3 years ago
6 0

Answer:

420 inches

Step-by-step explanation:

You might be interested in
Someone help 9th grade math i will give brainliest
DENIUS [597]

Answer:

I think it may be H. but let me know if i am wrong. if i am right plz mark brainliest

Step-by-step explanation:

27 divided by 3 is 9, 27/3=9 because 27/3 is the same exact thing as 27 divided by 3. So the answer has to be 9

6 0
3 years ago
The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2885 and standard deviation
aliina [53]

Answer:

a.  X~N(2,885, 651)

b.  0.086291

c.  0.00058

d.  3213.10 calories

Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

-Let X a random variable denoting  the number of calories consumed.

-X is a is a normally distributed random variable with mean 2885 and standard deviation 651.

-This distribution is expressed as X~N(2,885, 651)

b. The probability that less than 2000 calories are consumed is calculated using the formula:

P(X

#substitute the given values in the formula to solve for P:

P(X

Hence, the probability of consuming less than 2000 calories is 0.08691

c. The proportion of customers consuming more than 5000 calories is calculated as:

P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058

Hence, the proportion of customers consuming over  5000 calories is 0.00058

d. The least amount of calories to get the award is calculated as:

1% is equivalent to a z value of 0.50399.

-We equate this to the formula to solve for the mean consumption:

0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

8 0
3 years ago
a Harley Davidson motorcycle shop maintains an inventory of four times as many new bikes as used bikes. if there are 60 new bike
almond37 [142]
You would divide the new bikes by four to find out the amount of used bikes
so 15
6 0
3 years ago
Read 2 more answers
Help. Me. Please. Pt1
sergejj [24]

Answer:

A

Step-by-step explanation:

X<Y means x is less than y-5 and you get A.

5 0
2 years ago
Read 2 more answers
Show that ( 2xy4 + 1/ (x + y2) ) dx + ( 4x2 y3 + 2y/ (x + y2) ) dy = 0 is exact, and find the solution. Find c if y(1) = 2.
fredd [130]

\dfrac{\partial\left(2xy^4+\frac1{x+y^2}\right)}{\partial y}=8xy^3-\dfrac{2y}{(x+y^2)^2}

\dfrac{\partial\left(4x^2y^3+\frac{2y}{x+y^2}\right)}{\partial x}=8xy^3-\dfrac{2y}{(x+y^2)^2}

so the ODE is indeed exact and there is a solution of the form F(x,y)=C. We have

\dfrac{\partial F}{\partial x}=2xy^4+\dfrac1{x+y^2}\implies F(x,y)=x^2y^4+\ln(x+y^2)+f(y)

\dfrac{\partial F}{\partial y}=4x^2y^3+\dfrac{2y}{x+y^2}=4x^2y^3+\dfrac{2y}{x+y^2}+f'(y)

f'(y)=0\implies f(y)=C

\implies F(x,y)=x^2y^3+\ln(x+y^2)=C

With y(1)=2, we have

8+\ln9=C

so

\boxed{x^2y^3+\ln(x+y^2)=8+\ln9}

8 0
3 years ago
Other questions:
  • Translate triangle ABC 3 units right and 2 units down what are the coordinates for point A?
    6·1 answer
  • An unknown fraction is between 0 and 1. Which is true about the equivalent percent and decimal?
    7·2 answers
  • What is the value of cos(150°)?
    14·2 answers
  • Two mechanics worked on a car. The first mechanic charged $45 per hour and the second charged $120 per hour. The mechanics worke
    10·1 answer
  • Henry runs a total of 10 miles at 5 track practices. If he continues at the same rate, how many miles will Henry run at the next
    7·2 answers
  • When constructing parallel lines, how are the steps similar
    13·1 answer
  • A rectangular prism had a volume of 198 cubic centimeters. The height of this prism was changed
    6·1 answer
  • 2 times the radius equals the....
    15·1 answer
  • The perimeter of AXYZ is __<br> units
    8·1 answer
  • 1. If the spinner below is spun once, find the <br> probability of a number less than 10
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!