10. Define an operation ★ on the set of real numbers as follows:

a ★ b = 0.5ab

If 0.1 ★ b = 10, then evaluate bb.

a. 500

b. 200

c. 20

d. 50

Please explain how you got your answer.

What is the ratio for the surface areas of the cones shown below, given that they are similar and that the ratio of their radii and altitudes is 2: 1? submit

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

If the perimeter of the square equals the perimeter of the regular pentagon. each side of a pentagon is 16cm long. how long is each side of the square?