 |
|
|
|
|
|
|
|
|
The midpoints of the sides of a quadrilateral |
2008-07-22 |
|
From JOEL:
A QUADRILATERAL A,B,C,D HAS THE CO -ORDINATE [2,5],[8,7],[10,3]&[0,1] RESPECTIVLY [B,E,G,H] ARE THE MID POINTS OF THE SIDES AB,BC,CD&DA RESPECTIVLY FIND THE MID POINTS OF [FG]&[FH]
Answered by Penny Nom. |
|
|
|
|
|
|
The maximum range of a projectile |
2008-07-22 |
|
From kwame:
the range R of projectile fired with an initial velocity Vo ,at an angle of elevation (@ )theta from the horizontal is given by the equation R = (Vo(squared) sin2theta)/g. where g is the accelation due to gravity . Find the angle theta such that the projectile has maximum range .
Answered by Harley Weston. |
|
|
|
|
|
|
Time with Non-Uniform Motion |
2008-07-21 |
|
From jenina:
An unmarked police car, travelling a constant 95km/h, is passed by a speeder travelling 145km/h. precisely 1.00s after the speed passes, the policeman steps on the accelerator. If the police car’s acceleration is 2.00m/s², how much time elapses after the police car is passed until it overtakes the speeder (assumed moving at constant speed)?
Answered by Janice Cotcher. |
|
|
|
|
|
|
The weight of a cubic yard of dirt |
2008-07-21 |
|
From Robert:
I need to know how many pounds of dirt is in a cubic yard
Answered by Penny Nom. |
|
|
|
|
|
|
Taking two math classes |
2008-07-21 |
|
From Bailey:
i am going into the 7th grade, but i am going to be taking 9 th grade math.
i was wondering if anyone could help survive doing two different math classes at the same time.
Answered by Harley Weston. |
|
|
|
|
|
|
Choosing 4 numbers from 70 numbers |
2008-07-21 |
|
From Jeannine:
When using numbers from 1 to 70 in sets of 4, how many combinations are there without having the same combination twice?
Thanks
Answered by Penny Nom. |
|
|
|
|
|
|
An equilateral triangle |
2008-07-21 |
|
From Meagan:
An equilateral triangle has vertices at (0,0) and (6,0) in a coordinate plane. What are the coordinates of the third vertex? You may want to sketch it out.
Note: The sides of an equilateral triangle are identical in length.
Answered by Harley Weston. |
|
|
|
|
|
|
The number of digits in a really big exponent |
2008-07-21 |
|
From Pete:
how would you find the number of digits in a really big exponent without a calculator?
Answered by Penny Nom. |
|
|
|
|
|
|
A hexagon has 3 parallelograms |
2008-07-21 |
|
From Stephanie:
A hexagon has 3 parallelograms but I am unsure of how to cut a hexagon into 3 parallelograms. Can you show me what this would look like?
Answered by Harley Weston. |
|
|
|
|
|
|
Factoring a quadratic trinomial |
2008-07-21 |
|
From Jeff:
c^2+4c+4
x^2-7x-18
Answered by Penny Nom. |
|
|
|
|
|
|
Three consecutive positive integers |
2008-07-20 |
|
From AC:
find three consecutive positive integers such that the product of the first and third, minus the second, is 1 more than 4 times the third
Answered by Penny Nom. |
|
|
|
|
|
|
Four Positive Integers |
2008-07-20 |
|
From william:
let a, b, c and n be positive integers. If a+b+c=(19)(97) and a+n=b-n=c/n, compute the value of a.
Answered by Janice Cotcher. |
|
|
|
|
|
|
???? x ? = ???? |
2008-07-20 |
|
From waiyan:
????
x ?
????
using 1 2 3 4 5 6 7 8 9
Answered by Janice Cotcher. |
|
|
|
|
|
|
Number of factors |
2008-07-20 |
|
From pete:
how do you find the number of factors in a really big number without using a factoring program or listing the out?
Answered by Penny Nom. |
|
|
|
|
|
|
A square and a circle |
2008-07-20 |
|
From kobina:
4 ft of a wire is to be used to form a square and a circle. how much of the wire is to be used for the square and how much should be used for the square in order to enclose the maximum total area
Answered by Harley Weston. |
|
|
