Mathematics, 28.04.2021 02:30, irishvball7
Exercise 3: Recall that at average speed v, the distance d traveled in a time t is given by d = vxt Part 1 Two trains leave at the same time. The first train leaves from station A and goes to station B at 60km / h The second train leaves from station B and goes to station A at 90km / h The two stations are 300 km apart We want to know after how long will they meet. 1) Conjecture the answer 2) We propose to prove the result using an equation. Let t be the time sought. a) Check that the first train will have covered a distance of 60t b) What will be the distance traveled by the second train? c) What does the expression 300 - (60t + 90t) represent? d) Solve the equation 300 - 60t + 90t) = 0 and conclude Part 2 Max and Min are 16 km away Max goes towards Min at 5km / h and Min goes towards Max at 7 km / h. They leave at 10h 30min What time are they going to meet? And how far from the starting point of Min and Max?
Answers: 1
Mathematics, 21.06.2019 14:30, brockandersin
Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?
Answers: 3
Mathematics, 21.06.2019 19:30, genyjoannerubiera
Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost
Answers: 1
Mathematics, 21.06.2019 23:00, karyme12
I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )
Answers: 1
Exercise 3: Recall that at average speed v, the distance d traveled in a time t is given by d = vxt...
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