Which one of the following numbers is not written in scientific notation?

A
0.1×10 3

B
3.2×10 3

C
2.1×10 2

D
5×10 2

Each morning papa notes the birds feeding on his bird feeder. so far this month he has see. 59 blue jays, 68 black crows, 12 red robin's and 1 cardinal. what is the probability of a blue jay being the next bird papa sees

Iwill give you ! what is the measure of ∠v ?

We just started the introduction into circles and i have no idea how to do this.