 |
|
|
|
|
|
|
|
|
The equation of a circle |
2010-05-04 |
|
From crystal:
find the standard form of the circle with center (-2,3) and tangent to the line y=1
Answered by Penny Nom. |
|
|
|
|
|
|
Interest |
2010-05-04 |
|
From RW:
If you earned 55.00 for a year in your savings acct. The account pays 0.5 % interest. How much money did you initially have in the savings account.
Answered by Penny Nom. |
|
|
|
|
|
|
Working together |
2010-05-04 |
|
From Felicia:
Sarah takes 3 hours longer to paint a floor than it takes Kate. when they work together it takes 2 hours. How long would each take to do the job alone?
Answered by Penny Nom. |
|
|
|
|
|
|
A wishing well |
2010-05-04 |
|
From Cassie:
I'm trying to construct a Wishing Well made of treated 2x4 wood, so the actual measurement is 3 1/2 by 1 1/2. The well is going to be three feet in diameter. I'm trying to construct this as circular as possible, what angle should the wood panels be cut at?
Answered by Penny Nom. |
|
|
|
|
|
|
A quadratic equation |
2010-05-03 |
|
From Millie:
(3x-4)(5xplus2)=0
Answered by Penny Nom. |
|
|
|
|
|
|
Tiling a floor |
2010-05-03 |
|
From guadalupe:
how many 16 x 16 inch square tiles fit into a 10 x 10 foot space?
Answered by Harley Weston. |
|
|
|
|
|
|
f(x) = x + 3 |
2010-05-02 |
|
From becca:
Find the function value
F(1)if f(x)=x+3
Answered by Penny Nom. |
|
|
|
|
|
|
40 miles at 50mph |
2010-05-02 |
|
From gill:
if a car travelled 40miles at 50mph, how long would it take?
Answered by Penny Nom. |
|
|
|
|
|
|
How much concrete do I order? |
2010-05-01 |
|
From Carol:
We are having a block foundation installed under our house that measures 80ftX28ft and I need to know how to figure out how much concrete to order. The footer will be 12 inches wide and 4 inches deep all the way around the house. How do I figure the square footage of my house? I know area = LxW but do I double that since there 4 sides to my house?
Answered by Penny Nom. |
|
|
|
|
|
|
Odd numbers with no repeated digits |
2010-05-01 |
|
From jameka:
How many odd numbers can be written from the set {2,3,4,5,6} if no digits may be used more than once?
Answered by Penny Nom. |
|
|
|
|
|
|
The rejection region |
2010-05-01 |
|
From Mong:
In Tests of Hypothesis, what is the decision when the test statistic we compute from the sample information is exactly equal to the critical value? that is, we reject null hypothesis or do not reject it?
Thanks!
Answered by Chris Fisher. |
|
|
|
|
|
|
When are the cars exactly 40 miles apart? |
2010-05-01 |
|
From Maryanne:
A car traveling east at 45 mph passes a certain intersection at 3pm. Another car traveling north at 60mph passes the same intersection 25 minutes later. To the nearest minute, figure out when the cars are exactly 40 miles apart.
Answered by Penny Nom. |
|
|
|
|
|
|
A geometric progression |
2010-04-30 |
|
From Kalyani:
sum of infinite geometric progression is 9 and common ratio is 1/10
then sum up to 8 terms is?
Answered by Chris Fisher. |
|
|
|
|
|
|
The diameter of a circle |
2010-04-30 |
|
From Jimmy:
If I have a straight line with a known length and decide to make a circle out of this know length how would I calculate what the diameter of the circle would be
Answered by Penny Nom. |
|
|
|
|
|
|
How many terms are in the simplified expression? |
2010-04-29 |
|
From Anu:
The expression (x+y+z)^2006 + (x-y-z)^2006 is simplified by expanding it and combining like terms.
How many terms are in the simplified expression?
I've spent hours on this. pls help!!!
Also, is answering these questions a paid job for you or is it volunteer work?
I'd like to join an ask and answer site for math, (when I grow up)
How does one go about doing that?
Answered by Robert Dawson. |
|
|
