Consider the two points f(−9, 0) and , 0) in the coordinate plane. what is the equation of the
ellipse given as the set of all points p in the coordinate plane satisfying fp + pg = 30? write the
equation in the form
x^2 / a^2 + y^2 / b^2 = 1 with a and b real numbers, and explain how you obtain your
answer.

Step-by-step explanation:

Let's call P(x,y). For F(-9,0) and G(9,0), FP represents the distance between F and P, and PG, the distance between P and G. For an ellipse, F and G are the focus, which is in x ax (y = 0).

The equation is given by:

dFP + dPG = 2a

FP + PG = 30 --> 2a = 30 --> a = 15

The point in the x ax is called c = 9

And the relation between them are:

c² = a² - b²

9² = 15² - b²

b² = 225 - 81

b² = 144

b = √144

b = 12

So, the equation of the ellipse is:

answer:

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

explanation:

service only with 20% tip  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the  

service

−−−−−−  

so technically the answer is  

→

$

72.6

(

1

+

20

100

)

=

$

87.12

however, the intention of the question provider may have been that your answer is to be  

$

87.12

(

1

+

8

100

)

=

$

94.09

to 2 decimal places.

'

payment just for service  

→

$

87.12

payment for service including tax

→

$

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge  

.

→

$

72.60

20% tip  

20

100

×

$

72.60

=

$

14.52

−−−−−−  

←

add

$

87.12

tax  

8

100

×

$

87.12

=

$

6.97

−−−−−  

←

add

$

94.09

related questions

i dont know

step-by-step explanation:

the reason i dont know is because i have not taken this class and for that reason i haven't learned this stuff

hope i could