What is the answer for 7 to the negitive second power.

the negative just tell you you put a one over the number. Once that's done, the power will be positive, and you can square like normal

Are you asking about    ?

If so:

A negative in the exponent tells us that we must take the reciprocal of the number, in this case, 7, and then use the exponent like normal:

=

=

,

So our answer is 1/49.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.