Answer:
The radius is 8. To find the radius you divide the diameter in half.
Comment and let me know if this is right.
Step-by-step explanation:
I believe it is the distributive property.
Solve:-
7.8 × 0.5 = How far Erica jogged
7.8 × 0.5 = 3.9
3.9 Miles
So, if Marsha jogged 7.8 miles, and Erica jogged 0.5 times as far, as Marsha, Erica jogged 3.9 Miles.
Hope I helped ya!! xD
Answer:
Option C. 
Step-by-step explanation:
we know that
The discriminant of a quadratic equation of the form
is equal to

in this problem we have
so

substitute


