8 articles trouvés pour ce sujet.
 |
|
|
|
|
|
|
|
|
Graham's money box |
2018-04-12 |
|
Tasnim pose la question :
Graham's money box consists of sh.10 and sh.5 coins. There are 24 coins and it's total value is 150. Find how many of each coins are there in the box
Penny Nom lui répond. |
|
|
|
|
|
|
Up a hill and down again |
2017-09-17 |
|
justina pose la question :
Jack and Jill travel up a hill at a speed of 2mi/h.they travel back down the hill at a speed of 4mi/h.what is their average speed for the entire trip? express your answer as a mixed number
Penny Nom lui répond. |
|
|
|
|
|
|
Walking up and down a hill |
2014-02-06 |
|
flo pose la question :
michelle walks 4 km to the top of a hill at 3 km/h then immediately walks back down at an average speed of 5 km/h what is her average speed for the 8km walk
Penny Nom lui répond. |
|
|
|
|
|
|
Using trig to find the height of a hill |
2013-08-14 |
|
Anna pose la question :
From the top of a hill, the angles of depression of two successive milestones on a level road, which leads straight away from the hill, are 5degrees and 15degrees respectively. Fine the height of the hill.
Suggestion: BE is drawn perpendicular to AD. Find BE, then BD, finally CD.
Thanks :)
Penny Nom lui répond. |
|
|
|
|
|
|
Achilles and a turtle |
2011-07-01 |
|
Jean pose la question :
Achilles and a turtle are having a race. The turtle starts 45m ahead of Achilles and Achilles is twice as fast as the turtle. If turtle runs at 1m/s,how far would the turtle have run before he is outrun by Achilles?
Penny Nom lui répond. |
|
|
|
|
|
|
The height of a hill |
2010-03-26 |
|
Amber pose la question :
A surveying team determines the height of a hill by placing a 12-foot pole at the top
of the hill and measuring the angles of elevation to the bottom and to the top of the pole.
They find the angels of elevation. Describe how to find the height of the hill.
Penny Nom lui répond. |
|
|
|
|
|
|
Grade of a hill |
2009-01-26 |
|
rachel pose la question :
if the grade is 18%, how many feet would it fall vertically over a horizontal distance of 250 yards.
Robert Dawson lui répond. |
|
|
|
|
|
|
The percentage grade of that hill |
2002-11-05 |
|
Cathy pose la question :
If there is an 80ft climb over a kilometer(about 3280ft) what is the percentage grade of that hill?
Penny Nom lui répond. |
|
|
