 |
|
|
|
|
|
|
|
|
Percentage |
2007-09-30 |
|
From carolyn:
What percentage is 1 million dollars to 6,450 million dollars
Answered by Penny Nom. |
|
|
|
|
|
|
un jardinier plantent 10 arbres |
2007-09-30 |
|
From yannick:
un jardinier plantent 10 arbres.il a reussi a les disposer en formant 5 ligne de 4 arbres. retrouver une disposition possible
Answered by Claude Tardif. |
|
|
|
|
|
|
Quel est ce nombre |
2007-09-30 |
|
From fred:
Un groupe de 7 enfants vient de recevoir une grosse quantité de billes.
ils font le partage : toutes les billes sont distribuées et ils en ont chacun le même nombre.
le nombre total de billes s'écrit avec les mêmes chiffres que 1991. Quel est ce nombre
Answered by Claude Tardif. |
|
|
|
|
|
|
A sequence of numbers |
2007-09-30 |
|
From eleanor:
can you find the nth term of the sequence ( n starts at three)
1=?
2=?
3= 4
4= 10
5=20
6 = 35
7= 56
i only hand the 3rd 4th 5th 6th and 7th numbers in the sequence
can you please tell me how to find the nth term and what is it :)
Answered by Stephen La Rocque and Victoria West. |
|
|
|
|
|
|
The normal approximation to the binomial |
2007-09-30 |
|
From m.j.:
Slot Machines The probability of winning on a slot machine is 5%. If a person plays the machine 500 times, find the probability of winning 30 times. Use the normal approximation to the binomial distribution.
Answered by Harley Weston. |
|
|
|
|
|
|
y squared over 3 times 8 over y |
2007-09-30 |
|
From John:
y squared over 3 times 8 over y
Answered by Stephen La Rocque. |
|
|
|
|
|
|
Dividing the surface of a sphere |
2007-09-30 |
|
From Jaroslaw:
Is there a formula or method to divide the surface area of a sphere into equal parts. For example; 36 equal parts, 60 equal parts or 92 equal parts and so forth.
Answered by Chris Fisher and Stephen La Rocque. |
|
|
|
|
|
|
A 6 digit safe combination |
2007-09-29 |
|
From rich:
hi, i have a safe with a 6 digit combination. and i know the only
numbers used are the numbers 2 and 5. how many
combinations are there? and can you tell me all of them?
Answered by Penny Nom. |
|
|
|
|
|
|
Three circles |
2007-09-29 |
|
From Kevin:
3 given circles of R80, R56 & R24 are all in contact. The 2 smaller ones are inscribed in the big one.
Find by calculation or graphically (both if possible) the radiusof a 3rd circle which will be in contact with all 3 given circles.
Answered by Chris Fisher. |
|
|
|
|
|
|
Oil in a pipe |
2007-09-29 |
|
From Kristi:
How much oil is in a 40 foot section of pipe that its inside diameter is 36 inches?
Answered by Victoria West. |
|
|
|
|
|
|
Two power expressions |
2007-09-29 |
|
From James:
find the values for a and b
(a*x to the power of -1*y)(-1/2*x*y to the power of b)=6*y to the power of -6
please show me how to do this. Can I begin by taking out the powers?
Answered by Leeanne Boehm. |
|
|
|
|
|
|
The nth term |
2007-09-29 |
|
From zoe:
what is the nth term for the following sequence...
5, 2, -1, -4
Answered by Leeanne Boehm. |
|
|
|
|
|
|
Describe the pattern |
2007-09-29 |
|
From Baffled:
Given a rule, extend a pattern and describe it in informal mathematical language:
a) 1, 6, 16, 36, _
b) 2, 6, 14, 30, _
c) 1, 8, 22, 50, _
d) 3, 9, 27, _
e) 2, 7, 17, 37, _
Answered by Stephen La Rocque and Penny Nom. |
|
|
|
|
|
|
3x2/3 = 12/3 |
2007-09-28 |
|
From Shafan:
3x^2=12
Answered by Penny Nom. |
|
|
|
|
|
|
How many barrels of liquid will it hold? |
2007-09-28 |
|
From Jason:
A tank is 8' wide by 8' tall x 45' long. How many barrels of liquid will it hold??
Answered by Stephen La Rocque and Harley Weston. |
|
|
