Hello, my name is Ryder Dinning, I am a Cate School student and I have chosen to do the D=R•T page. I have always liked math and I love the feeling I get when I complete a problem and know that it is correct. I chose distance, rate, and time because I feel confident about the problems and it will help people that might not understand it. I might even learn some new things myself!
Distance, rate, and time problems are a very useful thing to know and use. By using the D=R•T formula you can find out distance, rate, or time as long as you know two of the other things. I think that this equation is very important and is extremely helpful in everyday life.
24.1
Day student Morgan left home at 7:00 one morning, determined to make the ten-mile trip to PEA on bicycle for a change. Soon thereafter, a parent noticed forgotten math homework on the kitchen table, got into the family car, and tried to catch up with the forgetful child. Morgan had a fifteen-minute head start, and was pedaling at 12 mph, while the parent pursued at 30 mph. Was Morgan reunited with the homework before reaching PEA that day? If so, where? If not, at what time during first period (math, which starts at 8:00) was the homework delivered?
Day student Morgan left home at 7:00 one morning, determined to make the ten-mile trip to PEA on bicycle for a change. Soon thereafter, a parent noticed forgotten math homework on the kitchen table, got into the family car, and tried to catch up with the forgetful child. Morgan had a fifteen-minute head start, and was pedaling at 12 mph, while the parent pursued at 30 mph. Was Morgan reunited with the homework before reaching PEA that day? If so, where? If not, at what time during first period (math, which starts at 8:00) was the homework delivered?
I think that this problem was very interesting because it wasn't just a simple distance, rate, and time problem and was a little more difficult because it had two separate things that were moving.
24.7
At 1 pm, you start out on your bike at 12 mph to meet a friend who lives 8 miles away. At the same time, the friend starts walking toward you at 4 mph. How much time will elapse before you meet your friend? How far will your friend have to walk?
At 1 pm, you start out on your bike at 12 mph to meet a friend who lives 8 miles away. At the same time, the friend starts walking toward you at 4 mph. How much time will elapse before you meet your friend? How far will your friend have to walk?
I think this problem was pretty similar to the problem before this except for the fact that instead of the two people moving in the same direction, it is two people that are moving towards each other which makes it a lot different.
23.1
How much time does it take for a jet to go 119 miles, if its speed is 420 mph? Be sure to specify the units for your answer.
How much time does it take for a jet to go 119 miles, if its speed is 420 mph? Be sure to specify the units for your answer.
I chose this problem because it was a very simple, yet useful problem that shows a simple way of finding out how much time it will take to get to a destination.
41.4
Jess and Wes used to race each other when they were younger. Jess could cover 8 meters per second, but Wes could cover only 5 meters per second, so Jess would sportingly let Wes start 60 meters ahead. They would both start at the same time and continue running until Jess caught up with Wes. How far did Jess run in those races?
Jess and Wes used to race each other when they were younger. Jess could cover 8 meters per second, but Wes could cover only 5 meters per second, so Jess would sportingly let Wes start 60 meters ahead. They would both start at the same time and continue running until Jess caught up with Wes. How far did Jess run in those races?
This was a very interesting and complicated problem and I chose it because it was something different than what I have learned.
21.1
Each beat of your heart pumps approximately 0.006 liter of blood.(a) If your heart beats 50 times, how much blood is pumped?
(b) How many beats does it take for your heart to pump 0.45 liters?
Each beat of your heart pumps approximately 0.006 liter of blood.(a) If your heart beats 50 times, how much blood is pumped?
(b) How many beats does it take for your heart to pump 0.45 liters?
I chose this problem because it was a simple example yet, it was different because it was a distance, rate, and time problem just with liters of blood instead of distance.