A scientist wants to estimate the number of lions living in a region. On Thursday, he locates and tags some lions.
On Friday he returns and locates 10 less lions than he had on Thursday.
He notices that 4 of the lions are tagged.
The scientist works out an estimate for the total number of lions living in the
region.

He notices that the number of lions that he had caught on Thursday, was a
Mifth of the total number of lions.
How many lions live in the region?

Can you simplify 4/7? 24 points will be awarded!

Each equation given below describes a parabola. which statement best compares their graphs? x = 2y^2 x = 8y^2

Suppose you just purchased a digital music player and have put 8 tracks on it. after listening to them you decide that you like 4 of the songs. with the random feature on your player, each of the 8 songs is played once in random order. find the probability that among the first two songs played (a) you like both of them. would this be unusual? (b) you like neither of them. (c) you like exactly one of them. (d) redo () if a song can be replayed before all 8 songs are played.