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Lubov Fominskaja [6]
3 years ago
14

a cross section of a parabolic satellite dish can be modeled by the equation y=1/48x^2. How far from the vertex of the cross sec

tion? Explain
Mathematics
1 answer:
KiRa [710]3 years ago
7 0
<span>place vertex at (0,0) basic equation: x^2=4py p=distance from vertex to focus) y=at ends of parabolic cross section y = x^2/4p Given y= 1/48x^2 So, 1/48x^2=X*2/4p 1/4p = 1/48 4p = 48 p = 48/4 = 12 ft</span>
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I need help with rhombus,rectangles and squares<br>​
AnnZ [28]

Answer:

a= 11, b= 12

Opposite angles of parallelogram are equal.

m<D = m<B

9b-2=106°

9b= 108°

b= 12°

Sum of the adjacent angles of a parallelogram = 180°

m<B+m<C = 180°

106°+7a-3=180°

7a = 180°-106°+3

7a=77°

a= 11°

4 0
2 years ago
The sum of a positive integer and a negative integer is...
murzikaleks [220]
Depends is the positive integer is larger than the negative interger for example -10+5=-5.
10+-4=6
8 0
3 years ago
The value of a car reduces by 30% every 6 months. A car costs $15,000 when new. What is the value of the car after 2 years?
Allisa [31]
6 months goes into 2 years 4 times
30 x 4 = 120
120% of 15,000 is
100% is 1,500
10% is 150
150 x 2 = 300 (20%)
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hope this helped
3 0
2 years ago
find the length of the base of a square pyramid if the volume is 1,024 cubic inches and has a height of 12 inches. (6 points) 4
Leokris [45]
To solve, we use the volume of a square pyramid formula which is expressed as the product of the area of the base (a²) and the height divided by three(h/3).

Volume = a² (h/3)
1024 in³ = (a²) (12 in/3)
a² = 1024 in³ · 3 /12
a = √256 in²
a = 16 in

Thus, the length of the base is 16 in.

5 0
2 years ago
Read 2 more answers
Joel earns $5.50 an hour and time-and-a-half for overtime. how much does he earn for a 44.5-hour week?
vova2212 [387]
The expression which can be used to solve this problem is 5.50h + 1.5h. 

Since the given data is 44.5 hour week, all we need to do is substitute the given data to the expression. Since it takes 56 hours a week for a complete office/working hour without overtime, Joel's 44.5 hour week means he did not have overtime hours. Therefore the solution is,

5.50(44.5) = 244.75 Dollars.
3 0
3 years ago
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