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Archy [21]
2 years ago
13

The cross section of a parabolic sound reflector at the Olympics has a diameter of 20 inches and is 25 inches deep. Write an equ

ation that represents the cross section of the reflector with its vertex at ( ) 0, 0 and its focus to the left of the vertex.
Mathematics
1 answer:
Arturiano [62]2 years ago
7 0

Answer: 69

Step-by-step explanation: Sorry I do not know the answer because I am not smart.  I just need the points so I can answer more questions.  Have a great day though and I wish you luck with your question:)

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The local farmers market has oranges on sale for 5 for 1.80 <br><br>What is the cost of one orange ?
lara [203]

Answer:.36 cent

1Step-by-step explanation:1.80 divided by 5

5 0
2 years ago
Find the distance between the two points in simplest radical form. (-5,8) (-8,6)
Tanzania [10]

Answer:

\sqrt{445} cannot be reduced any further, so that's the answer.

Step-by-step explanation:

Use the distance formula:

\sqrt{(x2-x1)^{2} +(y2-y1)^{2}} \\\\\sqrt{(-8-10)^{2}+(6--5)^{2}}\\\\\sqrt{(-18)^{2}+(11)^{2}}\\\\\sqrt{(324)+(121)}\\\\= \sqrt{445}\\

5 0
3 years ago
Read 2 more answers
What is the length of line PS
stiks02 [169]
PQ^2 = PR \times PS

(4x + 4)^2 = (3x + 3)(3x + 3 + 21)

16x^2 + 32x + 16= (3x + 3)(3x + 24)

16x^2 + 32x + 16= 9x^2 + 81x + 72

7x^2 - 49x- 56 = 0

7(x^2 - 7x - 8)= 0

(x - 8)(x + 1) = 0

x - 8 = 0~~~or~~~x + 1 = 0

x = 8~~~or~~~x = -1

x = -1 makes the lengths of segments PQ and PR equal zero.
That is not possible, so the solution x = -1 is discarded.

x = 8

PS = 3x + 3 + 21

PS = 3x + 24

PS = 3(8) + 24

PS = 24 + 24

PS = 48
4 0
3 years ago
Find the value of x. 4^3 = x
pshichka [43]

Answer:

x=64

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Can some one help me with this math question?
vova2212 [387]

Answer:

I'm pretty sure it would be base x height divided by 2 so 20×6÷2

8 0
2 years ago
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