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In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

What value is a discontinuity of x squared plus 8 x plus 4, all over x squared minus x minus 6?

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.