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"Less than" and "less than or equal to". |
2006-11-15 |
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Ross pose la question :
7 ≤ 10 and 7 ≤ 7 are both true statements. How can 7 be equal to 10, and 7 be less than 7? The book doesn't explain WHY!
Penny Nom lui répond. |
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The domain of a function |
2006-11-15 |
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April pose la question :
Determine the domain of the function h(x) = 4x/x(x^2-49)
Stephen La Rocque lui répond. |
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Sigma from 0 to infinity of (n^3 / 3^n) |
2006-11-15 |
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Cedric pose la question :
I'm wondering how you would find if this series converges or diverges?
Sigma from 0 to infinity of (n^3 / 3^n)
Does the n^3 dominate, or does the 3^n dominate? What about higher powers like n^10 / 10 ^ n ? Which one would dominate then?
Penny Nom lui répond. |
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-3x squared + 5x -2=0 |
2006-11-14 |
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Stacey pose la question :
my son has a problem I am trying to figure out
neg 3x squared + 5x -2=0
Stephen La Rocque lui répond. |
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The fraction 2/3 is found between which pair of fractions on the number line? |
2006-11-14 |
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Anita pose la question :
How can i find the answer? What is the formula? The fraction 2/3 is found between which pair of fractions on the number line? A.3/7 and 4/8 B. 1/2 and 3/7 C. 6/7 and 9/8 D. 3/5 and7/9
Steve La Rocque and Diane Hanson lui répond. |
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The grade of a highway |
2006-11-14 |
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Nancy pose la question :
If a portion of highway has a grade or slope of 12%, and the length of this portion is approximately 1.1 miles, what is the change in elevation from the top of the grade to the bottom of the grade in feet?
Stephen La Rocque and Penny Nom lui répond. |
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How to show my work when I simplify this 2 - 2[4 - 9] ÷ (-5)? |
2006-11-14 |
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Remada pose la question :
How to show my work when I simplify this 2 - 2[4 - 9] ÷ (-5)
Penny Nom lui répond. |
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Motorcycle expansion chamber design |
2006-11-14 |
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David pose la question :
I'm interested in calculating cone information regarding motorcycle expansion chamber design for example. I guess it's called a truncated cone, from what I've read so far. If I know the center line height, small radius, and large radius of a truncated cone then, how can I calculate the angle (included angle?) the cone forms? I'd like to know the variations of the formula so I can calculate for angle, or length, or one of the diameters if I know the other two measurements.
Stephen La Rocque lui répond. |
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The units digit of 1^5 + 2^5 + ... + 2006^5 |
2006-11-14 |
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Lana pose la question :
Compute the unit's digit of :
1 to the power of 5 + 2 to the power of 5 + 3 to the power of 5 + 4 to the power of 5 + 5 to the power of 5 + 6 to the power of 5 + ... + 2006 to the power of 5 .
Stephen La Rocque and Penny Nom lui répond. |
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The empty set is a subset of every set |
2006-11-14 |
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Narayana pose la question :
The empty set is a subset of every set
Stephen La Rocque and Penny Nom lui répond. |
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How high is the satellite above the earth? |
2006-11-13 |
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Naomi pose la question :
If the linear speed of a satellite in synchronous orbit is 1000 mi/h, how high is the satellite above the earth?
Stephen La Rocque lui répond. |
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Apples and plums |
2006-11-13 |
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Saif pose la question :
the problem i am stuck with is, nicole buys 2.3kg apples 1.8kg plums she pays £7.18 total plums cost £2.20per kg cost 1kg apples what is the cost of 1kg of apples
Stephen La Rocque lui répond. |
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The name of an equation |
2006-11-13 |
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Lee pose la question :
I am struggling to find the name of the following equation. I remember watching a TV programme introduced by Arthur C Clarke. The programme focused on an equation that gave a wonderful pattern that went on into infinity. Two maths professors discussed this equation.It was described as 'Gods equation' as it was compared to the shape of trees and other shapes in nature. It was named after the inventor/discoverer. If you have any ideas i would be most grateful.
Penny Nom lui répond. |
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A system of equations |
2006-11-13 |
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Katrina pose la question :
solve the system of equations using either the substitution or the elimination method. 2x-3y= -12 and -4x+6y=15
Penny Nom lui répond. |
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Some applications of conic sections |
2006-11-13 |
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Burt pose la question :
how are circles, ellipses, and hyperbolas used in everyday life
Penny Nom lui répond. |
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