 |
|
|
|
|
|
|
|
|
A word problem at the fair |
2016-10-25 |
|
From Rick:
Have 48 tickets to spend, have to spend them all in exactly 10 events.
Rides cost 6 tickets games cost 4 tickets & treats cost 3 tickets
Answered by Penny Nom. |
|
|
|
|
|
|
The volume of a hexagonal pyramid |
2016-10-21 |
|
From Elizabeth:
Find the height of a hexagonal pyramid with a volume of 1320 ft ^3. The area of the base is 120 ft^2.
Answered by Penny Nom. |
|
|
|
|
|
|
How many marbles does Haley have? |
2016-10-19 |
|
From Pat:
Sabrina has 1/4 the marbles as Haley.
They have 305 total. How many marbles does Haley have?
Answered by Penny Nom. |
|
|
|
|
|
|
A mixed number as a percent |
2016-10-18 |
|
From Jayda:
how go you change a mixed number into a percent
Ex. 3 3/4
Answered by Penny Nom. |
|
|
|
|
|
|
y = mx + c and Ax + By + C = 0 |
2016-10-18 |
|
From Erick:
please explain to me how to convert an equation from the form y=mx+c to Ax+By+C=o form.
Answered by Penny Nom. |
|
|
|
|
|
|
The degree of 2x + 7 |
2016-10-17 |
|
From Deejay:
How about when the given has no degree and the other has a constant only, For example 2x + 7,
where's the leading term and what is its leading coefficient?
Answered by Penny Nom. |
|
|
|
|
|
|
Travelling upstream and downstream |
2016-10-17 |
|
From Kathleen:
It took a boat 2 hours to reach town A going upstream. The way back was 1h20 min. What is the speed of the boat in still water if the speed of the stream is 3 mph?
Answered by Penny Nom. |
|
|
|
|
|
|
A circle formed from bending a wire |
2016-10-16 |
|
From Deszaree:
The same piece of a wire is bent to form a circle
calculate:
a, the radius of the circle
b, the area of the circle
Answered by Penny Nom. |
|
|
|
|
|
|
A probability question concerning eggs |
2016-10-16 |
|
From Brian:
Two participants are alternatively selecting eggs from a basket of 6 hard-boiled eggs and 6 uncooked eggs.
Alternatively they are smashing the eggs on their foreheads. One participant gets 4 hard boiled eggs in a row and the other person gets 4 uncooked eggs in a row.
What is the probability of this occurring (I watched this happen).
Thank you
Brian
Answered by Penny Nom. |
|
|
|
|
|
|
A linear relationship |
2016-10-16 |
|
From Bianca:
x represents the number of hours since 8am. y represents the number of children the school nurse has seen during the school day. The nurse has seen 3 children by 8am and 27 children by noon.
How many children has the nurse seen at 2pm?
If the nurse has seen 18 children, what time is it?
Answered by Penny Nom. |
|
|
|
|
|
|
An airplane schedule |
2016-10-14 |
|
From Stephanie:
Starting at 8:00a.m., a passenger plane leaves from an airport every 6 minutes and a cargo plane leaves every 7 minutes. When is the next time these kinds of planes will leave at the same time?
Answered by Penny Nom. |
|
|
|
|
|
|
Selina saved $6 on a 20% off sale |
2016-10-14 |
|
From Myra:
I don't know how to help my child answer this question - Selina bought a shirt on sale that was 20% less than the original price. The original price was $6 more than the sale price. What was the original price?
Answered by Penny Nom. |
|
|
|
|
|
|
A five digit number |
2016-10-12 |
|
From Massa:
Explain why any four digit number is less than any five digit number?
Answered by Penny Nom. |
|
|
|
|
|
|
Subtraction of two numbers in different bases |
2016-10-07 |
|
From Wica:
Hello,
So happy I found this site. I am having problems with bases. My question is :
Please perform the subtraction between two number over different bases :
A. (5874)base 12 - (216)base 9
B. (216)base 9 - (5874)base 12
Answered by Penny Nom. |
|
|
|
|
|
|
How far is the boat from the harbour? |
2016-10-06 |
|
From Karabo:
a boat sails 30 km due east from a harbour. Then it sails 40 km due north. How far is it from the harbour?
Answered by Penny Nom. |
|
|
