At a local high school, 40% of all students who are enrolled in precalculus finish the semester with an A in the class. Of the students who finish precalculus with an A, 80% go on to receive an A in calculus. Of the students who do not finish precalculus with an A, only 30% of the students go on to receive an A in calculus. What is the probability that a randomly chosen student from this school receives an A in both precalculus and calculus?

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

it would take 7/10 of an hour too fill the pool.

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for me what is finding a good play list and going out because i can not lay down and relax so i usually go to a coffee shop. i also use the gum trick and this actually works. another advice is highlighting subjects it really does me remember certain things

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he kicked it up? is this the answer ?

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