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
Aleksandr-060686 [28]
2 years ago
12

a parabolic lamp is facing due east. The bulb (located at the focus) is 8 inches away from the vertex (located at the origin). t

he lamp has a diameter of 20 inches. Which is the depth of the dish?
Mathematics
1 answer:
True [87]2 years ago
7 0

9514 1404 393

Answer:

  3 1/8 inches

Step-by-step explanation:

For focus-vertex distance p, the equation of the parabola can be written ...

  y = x^2/(4p)

Here, we have p=8. We want to find the value of y when x=10 (the radius of the dish). That is ...

  y = (10^2)/(4·8) = 100/32 = 3 1/8

The dish is 3 1/8 inches deep.

You might be interested in
Investing is a game of chance. Suppose there is a 36% chance that a risky stock investment will end up in a total loss of your i
Sergio039 [100]

Answer: P(x ≥ 1) = 0.893

Step-by-step explanation:

We would assume a binomial distribution for the outcome of the investment. The formula is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - r) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 36% = 36/100 = 0.36

q = 1 - p = 1 - 0.36

q = 0.64

n = 5

Therefore,

P(x ≥ 1) = 1 - P(x = 0)

P(x = 0) = 5C0 × 0.36^0 × 0.64^(5 - 0)

P(x = 0) = 1 × 1 × 0.107

P(x = 0) = 0.107

P(x ≥ 1) = 1 - 0.107 = 0.893

3 0
3 years ago
Quadrilateral WXYZ has the vertices W(-5, 2), X(-4, -2), Y(3, 1), and Z(2, -5). The quadrilateral is dilated by a scale factor o
vladimir2022 [97]
I’m not sure but is maybe c
5 0
3 years ago
Using identities, find a)(2 + 3) 2 b) (x+2y) (x-2y)​
shutvik [7]
Pop ok you see so the answer here would be frantically elastic
5 0
2 years ago
Have another question! will give brainliest again
stepan [7]

Answer:

-64

Step-by-step explanation:

If I represent the worker's position relative to the surface of the earth then

if we let Δy = the change of position.

Δy = 0 -64 \\ Δy = -64

5 0
3 years ago
Can anyone help!<br> WITH STEPS!
MissTica

Answer:

When we have something like:

\sqrt[n]{x}

It is called the n-th root of x.

Where x is called the radicand, and n is called the index.

Then the term:

\sqrt[4]{16}

is called the fourth root of 16.

And in this case, we can see that the index is 4, and the radicand is 16.

At the end, we have the question: what is the 4th root of 16?

this is:

\sqrt[4]{16} = \sqrt[4]{4*4}  = \sqrt[4]{2*2*2*2} = 2

The 4th root of 16 is equal to 2.

6 0
2 years ago
Other questions:
  • 20x100/2???????????????????????????????????????????????????????????????????????????????
    11·2 answers
  • Round 0.085416 to the nearest ten thousandth.
    6·1 answer
  • A customer pays $18 for a DVD that originally costs $20. What is the percent decrease in the cost of the DVD?
    5·1 answer
  • Number 1. Based on the marks, what can you assume to be true in each figure?
    8·2 answers
  • Find the slope of the line graphed​
    10·1 answer
  • What is the area, in square inches, of the figure shown here?
    6·2 answers
  • Convert 1.2 gram to kilogram
    8·2 answers
  • Find f(4) if f(x) = 3x + 1
    15·1 answer
  • Directions: Graph each equation by using the y-intercept and slope( make sure too show your work)
    8·1 answer
  • Which scenario could be represented by this graph?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!