Asap! which lines are the directrices of the ellipse?

Second option is correct.

Step-by-step explanation:

Since we have given that

The equation of ellipse of the given figure is :

So, the major axis = 5 units = a

minor axis = 3 units = b

So, the formula for directrices would be

Hence, the directrices of the ellipse would be

x = 9.25 and x = -3.25

Thus, Second option is correct.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -