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Ordering fractions |
2000-01-05 |
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From A seventh grader: I am a middle school student (7th grade) and I was wondering if you could help me with ordering fractions from least to greatest the fractions are 31/12, 2 5/6 and 2 3/4. Answered by Walter Whiteley. |
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A probability experiment |
2000-01-05 |
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From Vanessa: Duels in the town of Discretion are rarely fatal. There, each contestant comes at a random moment between 5 a.m. and 6 a.m. on the appointed day and leaves exactly 5 minutes later, honor served, unless his opponent arrives within the time interval and then they fight. What fraction of duels lead to violence? There must be a minimum number of 100 trials and things like graphing calculator, dice, spinners, and whatever are allowed. Answered by Harley Weston. |
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Why study calculus? |
2000-01-05 |
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From Trlpal: I am a high school senior enrolled in a pre-calculus class. Could you tell me what the benefits of taking calculus are and why it would be important to take the class. Answered by Walter Whiteley and Harley Weston. |
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Factoring ^6 |
2000-01-03 |
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From Athena:
my name is Athena and I have a question on factoring: how would you figure this out: (x6-y6) and (x6+y6) Answered by Penny Nom. |
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Y-intercept |
2000-01-03 |
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From Kayla Boylan: How do you use and find the y-intercept? Answered by Penny Nom. |
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zero |
2000-01-01 |
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From Jason: What civilization first used zero? Answered by Penny Nom. |
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Derive the quadratic equation |
2000-01-01 |
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From Thuy: My teacher asked us this question in which i can't understand when she asked to derive the quadratic equation. What does this mean? Answered by Penny Nom. |
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Solving a cubic equation |
1999-12-30 |
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From Natalia: How can I solve: 2 x3 - x2 + x - 2 = 0 ??? Answered by Penny Nom. |
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Absolute value |
1999-12-29 |
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From Alex Waller: What are some practical applications for absolute value? Answered by Harley Weston. |
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Period |
1999-12-28 |
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From Mahdawi: I have attached a diagram of the graph, and I need to find out its period. I really don't understand how to do so, please help! Answered by Harley Weston. |
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Parachute Problem |
1999-12-28 |
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From Stephanie Zinsli: A parachutist jumps from an airplane and lands in a square field that is 2 kilometers on each side. In each corner of the field there is a large tree. The parachutist's ropes will get tangled in the tree if she lands within 1/11 kilometer of its trunk. What is the probability that she will land in the field without getting caught in a tree? Answered by Penny Nom. |
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Three algebra problems |
1999-12-28 |
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From Stephanie Branton:
- If P represents the product of all prime numbers less than 1000, what is the value of the unit's digit of P?
- Do any real numbers a and b exist such that: ln(a+b)=ln a + ln b? if so, what are they?
- Define a function by: f(x)=1/1-x where x is not equal to 0,1. what is f(f(f(a)))?
Answered by Harley Weston. |
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Graph of a sine function |
1999-12-23 |
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From Pierre: Given; amplitute:1 period: 540 Phase shift: 60 degree,right I am ask to right the equation: sin 2/3 (value -60degree) When I am asked to graph the equation, the period is mixing me up. Answered by Harley Weston. |
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Climbing stairs |
1999-12-22 |
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From Harman Chaudhry: Paul, Michelle and Michael all climb up 54 steps. Paul climbs the steps one at a time i.e. 1, 2, 3, etc. Michelle Climbs the stairs 2 at a time i.e. 2, 4, 6, etc. Michael climbs the stairs 3 at a time i.e. 3, 6, 9, etc. How many steps are used by exactly two people? Answered by Penny Nom. |
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Specific heat |
1999-12-22 |
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From Irena: In transferring 1260J of heat to water, the temperature of 0.20 kg of mercury falls 50 K. Calculate the specific heat capacity of mercury using the equation C= Q/(m)(delta t) i know that Q= -1260J because it's loosing heat and m= 0.2kg and since i have to use 'C i have to convert Kelvins into Celsius (i also know that 'C has to be negative since it looses heat) . . . Answered by Harley Weston. |
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