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
CaHeK987 [17]
3 years ago
12

Find a formula for a function f(x,y,z) whose level surface f=81 is a sphere of radius 9, centered at the origin.

Mathematics
1 answer:
Mrrafil [7]3 years ago
4 0

81(9 \times 8 = 72 + 9) = 81
You might be interested in
"A laboratory tested 73 chicken eggs and found that the mean amount of cholesterol was 230 milligrams with LaTeX: \sigmaσ = 17.4
Scrat [10]

Answer:

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

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{17.4}{\sqrt{73}} = 3.99

The lower end of the interval is the sample mean subtracted by M. So it is 230 - 3.99 = 226.01

The upper end of the interval is the sample mean added to M. So it is 230 + 3.99 = 233.99.

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

4 0
3 years ago
What are the answers for 4 and 6?
gizmo_the_mogwai [7]
You don't really have a picture wot anything to go by so i don't know
7 0
3 years ago
Polynomial Warm Up
Kazeer [188]

Answer:

Step-by-step explanation:

False you must multiply the coefficient (numbers) and add the exponents.

8 0
3 years ago
2
Pachacha [2.7K]

Answer:

1204

Step-by-step explanation yes uu28

5 0
3 years ago
Solve for x. −18 = −2/3 x
vredina [299]

Answer:

x = 27

Step-by-step explanation:

To isolate x, we can multiply it by the reciprocal of the fraction (-3/2). We do the same to the -18.

Through cross-multiplication, -18/1 x -3/2 simplifies into -9/1 x -3/1 (because 2 goes into 2 once and 2 goes into -18 -9 times).

-9 x -3 = 27; therefore, x = 27

7 0
4 years ago
Read 2 more answers
Other questions:
  • Can u help me with 8 and 10
    12·1 answer
  • 8y-9y , show work even tho i know it’s not a lot !
    15·1 answer
  • I need help fast plz
    12·2 answers
  • What is the value of 49x+2x when x equals 3
    8·2 answers
  • What is the value of x in the equation 4x+8y=40 when y = 0.8
    15·1 answer
  • What is the greatest common factor of 12x 16x 8x
    7·1 answer
  • Help please Solving Systems Using Inspection
    12·2 answers
  • Please help will give extra points+ brainliest
    8·1 answer
  • HELP PLS EASY POINTS (probably)
    10·1 answer
  • Complete the function table
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!