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The weight of some dirt |
2016-02-24 |
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Michael pose la question :
How many tons of dirt are in a triangle 14M x10M x 8.1M x .8M deep?
Penny Nom lui répond. |
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Converting a fraction to a percentage |
2016-02-22 |
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Preitty pose la question :
How can I turn fractions into percentages when the denominator is not a number that can multiply to 100?
Penny Nom lui répond. |
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How can I express Sin 4A in term of Sin A? |
2016-02-22 |
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Odukoya pose la question :
How can I express Sin 4A in term of Sin A?
Penny Nom lui répond. |
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A bonus of 8% of sales |
2016-02-22 |
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Barghavi pose la question :
A man earns $325 per week plus an additional 8% on any sales over $500.
If he makes $6,250 in sales, how much money in total does he earn that week?
thank you!
Penny Nom lui répond. |
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The evaluation of a 3 by 3 determinant |
2016-02-19 |
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Kristen pose la question :
What is the step-by-step process on how to evaluate the determinant of a 3*3 matrix, using the expansion method (not the diagonal method)
Penny Nom lui répond. |
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The domain and range of a function |
2016-02-19 |
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Genius pose la question :
State the domain and range
g(x)=x(x-1)
Penny Nom lui répond. |
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The interior and external angles of a regular polygon |
2016-02-17 |
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percy pose la question :
a regular polygon has n sides .The size of each interior angle is eight times the size of each exterior angle .
1.find the size of each exterior angle
2.calculate the value of n
Penny Nom lui répond. |
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Shooting a ball at a target |
2016-02-16 |
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Thys pose la question :
Hi
I have a problem with the formula that i use .(for programming)
I have looked all over the web to find a solution but no luck.
I have a cannon that shoots a ball at a target
I use this formula to calculate what my initial velocity must be to hit the target
at a angle of 30 degrees and a distance of 15m (the cannon and target position is known)
It works perfectly if both is at same height but if one is higher or lower it miss.
In an example I am working with the range is 30m, the angle is 45 degrees and the target is 10m higher than my position.
Please help
Formula = V0 = √RG / Sin(2α)
Harley Weston lui répond. |
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0/0 |
2016-02-14 |
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Noni pose la question :
Q. 0÷0=1 Why it is wrong when 4÷4=1; 3÷3=1; 2÷2=1: 1÷1=1 ?
Penny Nom lui répond. |
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Speed and velocity |
2016-02-14 |
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kechi pose la question :
A boat sails south through Chesapeake Bay. It takes 10 hours to sail 110 kilometers. Describe the boat's motion. Calculate the boat's speed and velocity, showing the calculations. Explain how the boat's speed is different from its velocity
Penny Nom lui répond. |
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Perpendicular lines |
2016-02-14 |
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Brendon pose la question :
points A (-4; 6) , B (1;-2), C (5;-3) and D (4; 1) are given
prove that AC and BD are perpendicular to each other
Penny Nom lui répond. |
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Calendar arithmetic |
2016-02-14 |
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Jenalee pose la question :
January 1, 2001 is Julian Day 2 451 911 (the number of days that have passed since Day 0, January 1, 4713 BC).
If Julian Day 0 was a Monday, what day of the week was January 1, 2001?
Victoria West lui répond. |
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Two equations in two unknowns |
2016-02-13 |
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Anumba pose la question :
4x + 2y = 4
7x - y = -11
Penny Nom lui répond. |
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Todd is 3 years older than his brother Jack |
2016-02-13 |
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Victoria pose la question :
Todd is 3 years older than his brother Jack. If Jack is x years old and Todd is y years old, write a rule that relates their ages over time. When Jack is 28 years old, how old will Todd be?
Penny Nom lui répond. |
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Travelling with and against he current |
2016-02-09 |
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Lloyd pose la question :
A boat travelled 210 miles downstream and back. The trip downstream took 10hrs, the trip back took 70hrs
1. what is the speed of the current?
2. what is the speed of the boat in still water?
Penny Nom lui répond. |
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