 |
|
|
|
|
|
|
|
|
How many lines of symmetry does a circle have? |
2019-05-28 |
|
From raji:
how many lines of symmetry does a circle have???
Answered by Penny Nom. |
|
|
|
|
|
|
Compound interest |
2019-05-28 |
|
From Kenneth:
Hello:
Is compound interest on $1.00 for one year the same as simple interest on
$1.00 for one year?
Compound interest would be $1.01, and I believe the same amount would be
the same at simple interest.
Answered by Penny Nom. |
|
|
|
|
|
|
Maximize monthly revenue |
2019-05-23 |
|
From a student:
A real-estate firm owns 100 garden type apartments. At RM400 per month, each apartment can be rented. However, for each RM10 per month increase, there will be two vacancies with no possibility of filling them. What rent per apartment will maximize monthly revenue?
Answered by Penny Nom. |
|
|
|
|
|
|
Two circles |
2019-05-23 |
|
From Arman:
Two concentric circles have their centres at
point C. The radius of the smaller circle is
8 cm. The length of chord AB is 26 cm and
is tangent to the smaller circle. What is the
circumference of the larger circle?
Answered by Penny Nom. |
|
|
|
|
|
|
Do all angles have to be equal to a number? |
2019-05-15 |
|
From Malik:
Do all angles have to be equal to a number? By all angles I mean adjacent, vertical, supplementary, complementary.
Answered by Penny Nom. |
|
|
|
|
|
|
What is the original price? |
2019-05-15 |
|
From Tyler:
if 45% of an item is $90.00, then what is the original price
Answered by Penny Nom. |
|
|
|
|
|
|
An 80 acre square |
2019-05-11 |
|
From Linda:
How long and wide is an 80-acre piece of land that is square?
How long and wide is a 160-acre piece of land that is square?
Answered by Penny Nom. |
|
|
|
|
|
|
Pennies, nickels, dimes, and quarters |
2019-05-09 |
|
From william:
Ann has 177 coins (pennies, nickels, dimes, and quarters)
Her total value is $19.90
She has the same number of nickels as dimes.
She has the same number of quarters as dimes.
How many of each does she have?
Answered by Penny Nom. |
|
|
|
|
|
|
Subdividing land |
2019-05-09 |
|
From Reuben:
This is the measurements of my plot, A-B 46.7M, B-C 193.1, C-D 198.5 & D-A 208.25 (Clockwise naming of sides) angle A at 90 degrees. My questions is how do i subdivide this plot from the bottom having lines running parallel to C-D, eg two 2acre plots. the the remaining part becomes my compound (Uper part at line A-B)
Answered by Harley Weston. |
|
|
|
|
|
|
The volume of a wall |
2019-05-08 |
|
From Peter:
I’m building a dry stack stone wall which is 36” wide at the base, 42” tall and 24” wide at the top. What would be the volume for a 36” long segment ?
Thanks, Peter
Answered by Penny Nom. |
|
|
|
|
|
|
Why Mean? |
2019-05-08 |
|
From Jill:
A group of teachers were trying to figure out why the”mean” is called mean - do you know??
Answered by Penny Nom. |
|
|
|
|
|
|
Two numbers |
2019-05-03 |
|
From fds:
The difference of two numbers is 2, and their sum is 4. What are the two numbers?
Answered by Penny Nom. |
|
|
|
|
|
|
Volume and Surface area of a sphere |
2019-05-03 |
|
From Caitlin:
Why does the surface area formula of a sphere have a squared radius while the volume of a sphere has a cubed radius?
Answered by Penny Nom. |
|
|
|
|
|
|
A repeating decimal divided by a whole number |
2019-05-01 |
|
From Emily:
How do you divide repeating decimals by whole numbers?
Answered by Penny Nom. |
|
|
|
|
|
|
If 45% of an item is 90.00 |
2019-05-01 |
|
From Gavin:
If 45% of an item is 90.00 what is the original price?
Answered by Penny Nom. |
|
|
