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cluponka [151]
3 years ago
15

A parabolic satellite dish is modeled by the equation and measured in feet . In order to receive optimal signals, a satellite co

mpany must construct the receiver to be the focus of the parabolic dish. How far from the vertex of the dish should the receiver be placed.
(asking for a friend)
Mathematics
1 answer:
dedylja [7]3 years ago
8 0

Answer:

The answer is attached below.

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PLEASE HELP!!! HURRY PLEASE!!!
Misha Larkins [42]

Answer:-2=-2 (b)

Step-by-step explanation:

I just took that lesson

6 0
4 years ago
Evaluate the expression 4x2+3y for x = 5 and y = 6.
babymother [125]

Answer:

118

Step-by-step explanation:

{4x}^{2}  + 3y

4(5 {)}^{2}  + 3(6)

4 \times 25+3(6)

100+3(6)

100+18

118

<h3>Hope it is helpful...</h3>
3 0
3 years ago
What transformations are needed to change the parent cosine function to y=3cos(10(x-pi))?
LUCKY_DIMON [66]

Answer:

The graph of y=cos(x) is:

*Stretched vertically by a factor of 3

*Compressed horizontally by a factor  \frac{1}{10} .

*Moves horizontally \pi units to the rigth

The transformation is:

y=3f(10(x-\pi))

Step-by-step explanation:

If  the function y=cf(h(x+b))  represents the transformations made to the graph of y= f(x)  then, by definition:

If  0 then the graph is compressed vertically by a factor c.

If  |c| > 1 then the graph is stretched vertically by a factor c

If c  then the graph is reflected on the x axis.

If b> 0 The graph moves horizontally b units to the left

If b The graph moves horizontally b units to the rigth

If 0 the graph is stretched horizontally  by a factor \frac{1}{h}

If h> 1 the graph is compressed horizontally by a factor \frac{1}{h}

In this problem we have the function y=3cos(10(x-pi)) and our parent function is y = cos(x)

The transformation is:

y=3f(10(x-\pi))

Then c =3>1  and b =-\pi < 0 and h=10 > 1

Therefore the graph of y=cos(x) is:

Stretched vertically by a factor of 3.

Also as h=10 the graph is compressed horizontally by a factor  \frac{1}{10} .

Also, as b =-\pi < 0 The graph moves horizontally \pi units to the rigth

6 0
3 years ago
Find the value of x.
inna [77]
X is 2 because 96•45 is 2.1
7 0
3 years ago
Read 2 more answers
If f(x)=3x+10x and g(x)=4x-1 find (f-g)(x)
oksano4ka [1.4K]

Answer:

(f - g)(x) = 9x + 1

Step-by-step explanation:

Step 1: Write out functions

f(x) = 3x + 10x = 13x

g(x) = 4x - 1

Step 2: Find (f - g)(x)

(f - g)(x) = 13x - (4x - 1)

(f - g)(x) = 13x - 4x + 1

(f - g)(x) = 9x + 1

4 0
4 years ago
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