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Archy [21]
3 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]3 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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14/30÷14.00 show all work <br>​
kati45 [8]

1 Simplify \frac{14}{30}

​30

​

​14

​​  to \frac{7}{15}

​15

​

​7

​​ .

\frac{7}{15}\div 14.00

​15

​

​7

​​ ÷14.00

2 Use this rule: a\div \frac{b}{c}=a\times \frac{c}{b}a÷

​c

​

​b

​​ =a×

​b

​

​c

​​ .

\frac{7}{15}\times \frac{1}{14.00}

​15

​

​7

​​ ×

​14.00

​

​1

​​  

3 Use this rule: \frac{a}{b}\times \frac{c}{d}=\frac{ac}{bd}

​b

​

​a

​​ ×

​d

​

​c

​​ =

​bd

​

​ac

​​ .

\frac{7\times 1}{15\times 14.00}

​15×14.00

​

​7×1

​​  

4 Simplify 7\times 17×1 to 77.

\frac{7}{15\times 14.00}

​15×14.00

​

​7

​​  

5 Simplify 15\times 14.0015×14.00 to 210210.

\frac{7}{210}

​210

​

​7

​​  

6 Simplify.

1/30

5 0
3 years ago
Please answer!!!!!!!!!!!!
vagabundo [1.1K]

Answer:

x = 14

A = 38

B = 71

C = 71

Step-by-step explanation:

3x-4 + 5x + 1 + 7x-27 = 180

15x-30 = 180

15x = 180 + 30

15x = 210

x = 210/15

x = 14

A = 3x-4 = 3(14) - 4 = 38

B = 5x + 1 = 5(14) + 1 = 70 + 1 = 71

C = 7x - 27 = 7(14) - 27 = 98-27 = 71

6 0
3 years ago
What is 50% of 33 show work please​
olganol [36]

Answer:

16.5

Step-by-step explanation:

50 x 33

-------------

100

= 16.5

8 0
3 years ago
The coordinates of a point on a coordinate grid are (−2, 6). The point is reflected across the x-axis to obtain a new point. The
Kipish [7]
So when you reflect the x-axis, you change the y negative. So (x,y) would be (x,-y). so it would be (-2, -6). If you want to reflect over the y-axis, it would be   (-x, y).
7 0
3 years ago
A- 15 √11<br> B- 30 √22<br> C- 30 √11<br> D- 15 √22
ANTONII [103]

Answer:

C

Step-by-step explanation:

3\sqrt{50} * \sqrt{22} \\3 \sqrt{50 * 22} \\3\sqrt{1100} \\3\sqrt{11 * 10 * 10}\\3*10\sqrt{11}\\30\sqrt{11}

8 0
4 years ago
Read 2 more answers
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