What is the value of x?

A) 102

B) 78

C) 39

D) 51

D

Step-by-step explanation:

The inscribed angle x whose vertex lies on the circle and whose sides are chords of the circle is one half the measure of the intercepted arc, thus

x = 0.5 × 102° = 51° → D

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

4x and 6y

im not sure though