algebra2 .....?

Question

6: Alexander left Miami and drove at a speed of 46 mph. Thomas left 1 hour later and drove at a speed of 60 mph. How long will it take Thomas to catch up with Alexander?
Hint: since they both go the same distance, we can set their distance expressions equal for the equation.





4.29 hours
3.29 hours
5.29 hours


7: Kyle left Miami and drove at a speed of 46 mph. Eric left 1 hour and 45 minutes later (which is 1.75 hours) and drove at a speed of 62 mph. How long will it take Eric to catch up with Kyle?


Hint: since they both go the same distance, we can set their distance expressions equal for the equation.




6.78 hours
3.2 hours
5.03 hours


8: Morgan and Thomas left Seattle at three in the afternoon, traveling in opposite directions. At six p.m., they were one hundred eighty-nine kilometers apart. If Thomas' rate of speed is two times that of Morgan's, what is Morgan's speed?


Hint: you are given a total distance. Therefore, Morgan's distance expression plus Thomas's distance expression equals the total distance.




17 kph
24 kph
21 kph


9: Megan left Seattle and traveled at a rate of thirty-one kph more than two times the speed of Isaac, who left at the same time but in the opposite direction. After 1.22 hours, they were 133 kilometers apart. What was Megan's speed?

Hint: you are given a total distance. Therefore, Megan's distance expression plus Isaac's distance expression equals the total distance. This answer depends on how you rounded throughout; select the closest or ask for help.





83 kph
23 kph
26 kph

Answer 1

6: Alexander left Miami and drove at a speed of 46 mph. Thomas left 1 hour later and drove at a speed of 60 mph. How long will it take Thomas to catch up with Alexander?

46a+46 =60a
46=14a
3.28 hours after Thomas leaves he will catch alexander. So it would take 4.28 hour total or 3.28 to catch up.

7: Kyle left Miami and drove at a speed of 46 mph. Eric left 1 hour and 45 minutes later (which is 1.75 hours) and drove at a speed of 62 mph. How long will it take Eric to catch up with Kyle?

46(1.75) +46x=62x
80.5=16x
5.03 = x


8: Morgan and Thomas left Seattle at three in the afternoon, traveling in opposite directions. At six p.m., they were one hundred eighty-nine kilometers apart. If Thomas' rate of speed is two times that of Morgan's, what is Morgan's speed?

2x(3)+x(3) = 189
6x+3x =189
9x=189
x = 21
Thomas 42, morgan 21

9: Megan left Seattle and traveled at a rate of thirty-one kph more than two times the speed of Isaac, who left at the same time but in the opposite direction. After 1.22 hours, they were 133 kilometers apart. What was Megan's speed?

(31+2I)1.22 +I(1.22)=133
37.82+2.44l +1.22l = 133
3.66I = 95.18
I = 26

So M = 31+2(26) = 83

Answer 2

6) b, 3.29 hours they will be equal (thats thomas's time on the road)

7) this is the same problem as #7, if you really dont understand ask your teacher,

im not gonna help you cheat with the others. im sure someone else on here will though.

trust me these are definitly not on a algebra 2 level, these are more like algebra 1 or pre-algebra problems. if you are really in algebra 2, you are either really dumb or really lazy.

Answer 3

6.. 3.29 hrs
7. 5.02 hrs
8. 21 mph
9, 83 kph
I donot understand the reason of your giving hints at the end of every problem?Do you think that the answerers really need these for working out solution?Or,do you have no confidence on the grey cells of Yahoo Answers?