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]
3 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]3 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
5 3/4÷5/9<br>what's answer​
anastassius [24]
The answer to the math problem is 10.35
5 0
2 years ago
Read 2 more answers
Which is a greater y-intercept (0,-1) or (0,-2)
kolezko [41]

Answer:

(0,-1)

Step-by-step explanation:

-1 is less than -2 so -1 have a greater value since it is closer to the origin (0,0)

3 0
3 years ago
you want to put 2000 in a simple intrest account. it has 2.5 annual intrest rate. how long will it take you to earn 500 in intre
mash [69]
Interest = PRT /100

500 = 2000*2.5*T / 100
5000T = 50,000
T = 50,000 / 5000 = 10 years
5 0
3 years ago
WILL MARK BRAINLIEST <br> What is the value of j?
LenKa [72]
I physically cannot tell you
4 0
2 years ago
Read 2 more answers
Solve<br> 6(x-3) + 10 = 2(4x-5)
Firdavs [7]
6x-8=8x-10 then 2=2x which means x=1
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which term refers to the median of the upper half of all the data?. . Select one of the options below as your answer:. . . . A..
    12·1 answer
  • -3x-4ya 2<br>Зr + 3y=-3​
    10·1 answer
  • 105 + 35m = expression . Apply the distributive property and the greatest common factor to write an equivalent
    14·1 answer
  • Write a linear function f with f(0) =7 and f(3)=1
    7·1 answer
  • Simplify the expression. a^-5 b-4/a^-13 b^8​
    5·1 answer
  • Round 796,154 to nearest 100,000
    5·2 answers
  • What is the value of x in the equation 4/7 [21/8x + 1/2] =-2 [1/7-5/28]? Write your solution in decimal form.
    7·1 answer
  • 3
    9·1 answer
  • (x−4)2+y2=64
    12·1 answer
  • UPic, the supermarket chain, had an earnings per share of $14.70 with a P/E ratio of 17.40 What was the share price of UPic stoc
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!