Use the Distance Formula to write an equation of the parabola with focus F (0, 4) and directrix y = -4.

Step-by-step explanation:

focus=(0,4)

Direcrtrix,y=-4

p=4

vertex=(0,0)

Open upward

(x-h)²=4p(y-k)

(x-0)²=4(4)(y-0)

(x-0)²=16(y-0)

1/16x^2

Step-by-step explanation:

This is an extremely easy question. My friend told me this and my assignment was 20x easier.

So basically, you take y=-4. Flip the sign of Y, in this case, it would be 4. Now multiply 4 by 4.

4x4 = 16

put 1 over 16. 1/16 then add the x squared. And boom, you have your answer!

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

you need to add a picture