What is the equation of a circle with center (-4,7) and radius 6

(x + 4)² + (y - 7)² = 36

Step-by-step explanation:

The equation of a circle is

(x - h)² + (y - k)² = r²      where (h,k) is the center, and r is the radius

Plug in what you were given, and simplify...

(x - (-4))² + (y - 7)² = 6²

  (x + 4)² + (y - 7)² = 36

e) none of the above because the measure of angle cba is 101°

30 miles

step-by-step explanation:

we know that 60 seconds equals 1 minute and 60 minutes 1 hour

44 ft       60 sec     60 min     158400   ft

  *   *   =

1 sec       1 min       1 hour         hour

we know that there are 5280 ft per mile

158400   ft       1 mile         30 miles

  *   =

1   hour               5280 ft     1 hour

so in 1 hour   it can travel 30 miles