5 ordinary quarters and have a quarter with two heads are placed in a hat. one quarter selected at random and tossed twice. if the outcome is "HH", what is the probability that's a fake quater was selected

Which gases are released into the atmosphere when volcanoes erupt?

If y = 9x - 7, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

What is 0.9 written as a fraction in simplest form

How to do a multi step equation

If a room is $109 what percentage offwould make the room cost $84?

Kayla bought 9/4 pounds of apples what is the weight as a mixed number

Your friends finds the percent increase from 140 to 203. Is your friend correct? 203 - 140 2030.31 = 31%

noama fly's from Italy to hongkong. her plane leaves Italy at 18:45 and arrives in hongkong 13 hour and 25 minutes later. the local time in Hong Kong is 6 hours ahead of Italy. time at what time does she arrives in hongkong

Maya visits the movie rental store. On on wall, therear 6 DVDs on each of 5 shelves. On other wall, there are 4 DVDs on each of 4 shelves. How many dvds are there all?

A universal set contains only sets A and B. If A∩B = Ø and A and B are not the empty set, then all of the following are true except A and B are disjoint. A is equal to B complement. A∪B={} A is not a subset of B.