On wednesday, jill spent 20 minutes doing her homework. she played outside 10 minutes and then read for 15 minutes. jill then ate dinner. she began eating dinner at 7: 30 p. m.

what time did jill start doing her homework?

a.
8: 15 p. m.

b.
7: 05 p. m.

c.
6: 45 p. m.

d.
6: 25 p. m.

What is the difference between regular convex and concave polygons

Evaluate the expression for the given value of the variable. ∣-4b-8∣+∣-1-b^2 ∣+2b^3 ; b=-2

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)