 |
|
|
|
|
|
|
|
|
Is 22/7 is an irrational number? |
2015-06-07 |
|
From Sayak:
Is 22/7 is an irrational number
Answered by Penny Nom. |
|
|
|
|
|
|
The surface area of a round bar |
2015-06-06 |
|
From chirag:
Please tell me the formula for finding round bar surface in square inches/ mm
Answered by Penny Nom. |
|
|
|
|
|
|
Manipulating an equation |
2015-06-05 |
|
From Leigh:
Hi, I'm having trouble trying to find out how the equation y=mx+b for b comes up with the answer b=y-mx. Could you please assist me with this
Answered by Penny Nom. |
|
|
|
|
|
|
A two digit number |
2015-06-05 |
|
From Madison:
Trini took some photos. The number of photos she took is a two digit number.
The sum of the digits is 11. The tens digit is 3 more than the ones digit.
How many photos did Trini take?
Answered by Penny Nom. |
|
|
|
|
|
|
The surface area of a triangular prism |
2015-06-03 |
|
From Alex:
Find the surface area of a triangular prism with Isoceles triangles and dimensions 4 feet by 6 feet
Answered by Penny Nom. |
|
|
|
|
|
|
The volume of a pipe |
2015-06-02 |
|
From gordon:
What is the formula to find out how many gallon of water in a length of pipe tried your answer on 8inch at 50feet did not work out
Answered by Penny Nom. |
|
|
|
|
|
|
A tangent to y = x^3 |
2015-05-31 |
|
From Brayden:
Show that a tangent line drawn to the curve y=x^3 at the point (d,f (d)), where d>0, forms a right triangle with the x and y axes in quadrant 4 whose area is (2/3)d^4.
Answered by Penny Nom. |
|
|
|
|
|
|
A pentagon inscribed in a circle |
2015-05-30 |
|
From Victoria:
find the area of a regular pentagon inscribed in a circle with radius 3 units
Answered by Penny Nom. |
|
|
|
|
|
|
A stone walkway around a pool |
2015-05-29 |
|
From Jerri:
I have a rectangular pool 15x30 and it will require stone placed around it 4 feet out and 4 inches deep how much will I need? Thanks, jerri
Answered by Penny Nom. |
|
|
|
|
|
|
The perimeter of a rectangle |
2015-05-28 |
|
From Imran:
The length of a rectangle is x+3 centimetres.
The width of the rectangle is x-1 centimetres.
Find an expression in terms of x for the perimeter of the rectangle.
The perimeter of a rectangle The perimeter of a rectangle
Give your expressions in it's simplest form.
The perimeter of a rectangle The perimeter of a rectangle
Thank You.
Answered by Penny Nom. |
|
|
|
|
|
|
Two concentric circles |
2015-05-28 |
|
From Shannan:
Two concentric circles have radii of 24cm and 26cm. What is the length of the chord that is tangent to the inner circle? Include a sketch
Answered by Penny Nom. |
|
|
|
|
|
|
Prove that you cannot factor x squared + 5 |
2015-05-28 |
|
From lily:
the question is: prove that you cannot factor x squared + 5
Answered by Robert Dawson. |
|
|
|
|
|
|
y=f(x) and y=-3/2f(x) |
2015-05-27 |
|
From Kevin:
Could you please show me what change y=f(x) to y=-3/2f(x) has gone through and please graph.
y=f(x) points: (-3,0) ,(0,-2), (2,-2), (3,4)
how does (0,-2) change?
Answered by Penny Nom. |
|
|
|
|
|
|
A path 30 feet wide by 2 miles long |
2015-05-24 |
|
From Doug:
If I make a path 30 feet wide by 2 miles long how many acres am I covering?
Answered by Penny Nom. |
|
|
|
|
|
|
The perimeter of a quarter circle |
2015-05-21 |
|
From Bethany:
The perimeter of a quarter circle is 3.57. What is the quarter circle's radius?
Answered by Penny Nom. |
|
|
