Mathematics, 16.06.2021 05:30 DisneyGirl11
Nadia has a handful of coins, all of which are either dimes or quarters. She has a total of 23
coins in her hand and a total of $3.65 worth of coins. Let d equal the number of dimes Nadia
has and let q represent the number of quarters she has.
(a) Could Nadia have 18 dimes and 5 (b) Write a system of equations (again in
quarters? Justify your answer. To make terms of cents) that models this situation.
the problem easier, deal with all money
in terms of pennies (or cents).
I
(c) Solve the system you wrote in (b). State a final conclusion that gives how many dimes
and how many quarters Nadia has in her hand.
Answers: 2
Mathematics, 21.06.2019 19:40, marshallmattah
Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297
Answers: 1
Mathematics, 21.06.2019 22:00, shantejahtierr63961
You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?
Answers: 3
Nadia has a handful of coins, all of which are either dimes or quarters. She has a total of 23
coin...
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