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15g/50g^3 |
2006-11-12 |
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From Nicole:
How do u simplify the variable expression? 15g/50g^3
Answered by Penny Nom. |
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ml to grams |
2006-11-11 |
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From Lisa:
We have 900mL and you have to multiply by 1.18 grams do you just multiply and get 1062 grams or am I missing a step?
Answered by Stephen La Rocque. |
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Filling a tank using two pipes |
2006-11-11 |
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From Tracey:
One pipe can fill a tank in 8 minutes and a second can fill it in 12 minutes. If the tank is empty, how long will it take both pipes to fill it.
Answered by Stephen La Rocque and Penny Nom. |
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(4x-5)^2 = -32 |
2006-11-11 |
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From Tracey:
(4x-5)^2 = -32
Answered by Stephen La Rocque and Penny Nom. |
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The name of a shape |
2006-11-11 |
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From Valentina:
I have a shape of 4 sides 3 are the same length (2cm each) and the other smaller (1.5cm)
Answered by Chris Fisher. |
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A trillion sugar cubes |
2006-11-10 |
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From Leeza:
How many dump trucks (I believe the standard bed size is 16'L x 8'W x 4'D) would it take to hold one trillion sugar cubes (which I believe are approximately 2cm in L, W and D)?
Answered by Penny Nom. |
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After how many hours will the class have been notified? |
2006-11-10 |
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From Brittany:
A college math class consists of 32 students. On Monday at 9:00 a.m., the teacher tells one student to notify other students that the test scheduled for Wednesday at 9:00 a.m. has been cancelled. The model for the number of students in the class who will have heard this information after t hours is N=32-32e^-0.02t. After how many hours will the class have been notified?
Answered by Stephen La Rocque. |
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Tangent lines |
2006-11-09 |
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From Melissa:
let f be a function with f(1)=4 such that for all points (x,y) on the graph of f the slope is given by (3x^(2)+1)/(2y)
a.)Find the slope of the graph of f at the point where x=1.
b.)Write an equation for the line tangent to the graph of f at x=1 and use it to approximate f(1.2)
c.) Find whether f is concave up or concave down when x=1. Is your answer in part b an overestimate or an underestimate?
Answered by Stephen La Rocque. |
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Number combinations |
2006-11-09 |
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From Bob:
how can I find out all the different combinations for the numbers 8168 example 8168, 8868, 1688,1886,6818 etc. how many are their.
Answered by Penny Nom. |
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When kx^2+3x+1 divided by (x-2) the remainder is 3 |
2006-11-09 |
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From Brianna:
For the dividend, find the value of k if the remainder is 3. (kx^2+3x+1) divided by (x-2)
Answered by Penny Nom. |
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A sphere in a cube |
2006-11-09 |
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From Lukas:
Given a cube and a cross diagonal, what is the largest size sphere that fits in the cube and does not touch or intersect the cross diagonal?
Answered by Steve La Rocque, Penny Nom and Walter Whiteley. |
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Least common multiple |
2006-11-08 |
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From Melenie:
I have a daughter in 5th grade she can't seem to grasp the concept of finding LCM's does anyone have a quick easy way for her to learn?????
Answered by Stephen La Rocque. |
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Piecewise functions |
2006-11-08 |
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From Kait:
We discussed how to graph piecewise functions today and I'm very lost!! I'm sitting here staring at this problem that says:
f(x){2x+1, if x <1
f(x){-x+4, if x is greater than or equal to 1.
Answered by Penny Nom. |
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The slope-intercept form |
2006-11-08 |
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From Kilihea:
I need to graph this equation but first need to turn it into a slope-intercept form. 6x - 3y = -3 I would really appreciate it if you could help me turn it into a slope-intercept form.
Answered by Penny Nom. |
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The rate of change of the perimeter of a square |
2006-11-07 |
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From Karli:
Find the rate of change of the perimeter of a square with respect to its area.
Answered by Stephen La Rocque. |
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