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Finding the x-intercept |
2007-03-02 |
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From Ash:
Y = -1/100X^2 =27/10X +0 = 0 THE Y INTERCEPT IS 50 HOW DO I FIND THE X INTERCEPT
Answered by Gabriel Potter. |
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Grams to millilitres |
2007-03-02 |
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From anton:
I am trying to convert 28 grams of weight loss powder into mils
Answered by Gabriel Potter. |
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y = f(x) and y = 2f(x-6) |
2007-03-02 |
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From carl:
if P(4,-5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6).
Answered by Penny Nom. |
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Is c relatively prime to (n.p)? |
2007-03-02 |
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From Andrew:
Please could you help me with a small mathematics problem?! I've put = the problem into three parts but it isn't really three problems; just = one! Given:- {[(n.p)^p] / [c + (n.p)]} =3D "an integer" (where c > = (n.p); c and n are integers, n is even and p is an odd prime number) Can one prove that c cannot be relatively prime to (n.p)? { i.e. c = must have the factor (n.p) ?} If so, is the converse also true? {i.e. If c is relatively prime to = (n.p), then [c + (n.p)] cannot be a factor of (n.p)^p ?} Lastly but similarly, if c is relatively prime to a and c > a > = (n.p) ; (c - a) > (n.p) **; and c is not relatively prime to (n.p) = would it be true that (c - a) cannot be a factor (n.p)^p ? I hope my question makes sense?
Answered by Penny Nom. |
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Mutually exclusive events |
2007-03-01 |
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From kalyssa:
will you me an example of two events that are mutually exclusive and could you explain to me what mutually exclusive means?
Answered by Steve La Rocque, Pam Fowler and Penny Nom. |
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How many yards of concrete? |
2007-02-28 |
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From jeremy:
I need to figure how many yards of concrete to use. I work for an asphalt company, and we are expanding into concrete. Currently we measure everything in sq. ft. So we came up with 6,960 sq ft of concrete to remove and replace. Currently there is 6" of concrete, and 2" of bedding material. We would like to replace only 4.5" of concrete, the rest in bedding. Here is how I figured, am I correct. 6,960 Sq ft (to simplify I made the Sq ft 350 X 20 ) 350 ft X 20 ft X .33 (1/3 ft or 4") = 2,310 cubic feet 2,310 cb ft / 27 = 85.55 cubic yards Is this correct?
Answered by Penny Nom. |
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The height of a triangle |
2007-02-28 |
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From A parent:
The side of a triangle is 16 inches. The base of the triangle is 8 inches. How tall is the triangle?
Answered by Penny Nom and Brennan Yaremko. |
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Range in statistics |
2007-02-28 |
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From Steve:
I was wondering if the range is considered as a positive or negative number, or does it ignore such indications?
Answered by Penny Nom. |
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Qui suis-je? |
2007-02-28 |
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From un parent:
bonjour, le problème est le suivant : Qui suis-je? Mon tiers augmenté de mes deux cinquième est égal à la moitié de mon triple Serez t'il possible d'avoir la solution à ce problème et que je puisse y comprendre un peu quelque chose quand même Je vous remercie d'avance et espère bientôt vous lire
Answered by Claude Tardif. |
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Simultaneous equations with fractions |
2007-02-28 |
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From Alyca:
Hello Math Central, I am a grade 10 student taking Academic math. Our unit right now is method of substitution and elimination. I'm stuck on this one question that I've been doing forever. Please help =)
*For this equation I have to do method of elimination, but it's so much harder with fractions...could some one please explain to me how to do it step by step?*
x y 2
-- - -- = - --
3 6 3
x y 1
-- - -- = 1---
12 4 2
Answered by Steve La Rocque and Ashley Mang. |
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sin(3a), cos(3a) and tan(3a) |
2007-02-28 |
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From mailene:
hi, i...indeed,to..need..your..help
how..cn..i..prove..this,formula???
sin3a=3sina-4sin^3a
cos3a=4cos^3-3cosa
tan3a=3tan-tan^3a /1-3tan^2a
the..symbol...^is..the..expOnent
Answered by Haley Ess and Penny Nom. |
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The area of a decagon |
2007-02-28 |
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From heather:
how do i find the apothem and area of a decagon that has a perimeter of 60?
Answered by Penny Nom. |
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The intersection of two lines |
2007-02-28 |
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From Tamara:
I was told to make a graph to help solve this question. I was given two equations. One was x-2y=3 and the other was 2x+y=-4. We have to change it to the equation of the line format. Then we graph the line and find the point where they meet. I've been trying to do that, but when i check the answer, It turns out wrong. It's meeting in the wrong spot. I need help please.
Answered by Penny Nom. |
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Parallel lines |
2007-02-27 |
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From Jennifer:
How to you decide whether the graphs of these two equations are parallel linse: y=3x+2, y=1/3x+4
Answered by Stephen La Rocque and Penny Nom. |
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Adding fractions |
2007-02-27 |
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From real:
A person spends 3/7 of her monthly earnings on rent and 1/7 on food. How Much does she spend on food and rent? how much does she have left? How do u work out these questions
Answered by Pam Fowler. |
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