Acoin is flipped 18 times, and it comes up tails 12 times. what is the experimental probability of the coin's coming up tails?

What is the value of x in the this question ?

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy