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The point of intersection of the pair of straight lines |
2009-11-19 |
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From Stephanie:
Find the point of intersection of the pair of straight lines:
y=-3x-9
-y=4x+2
x = _______ and y = ________
I am totally confused. Please help
Answered by Robert Dawson. |
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Angular speed |
2009-11-19 |
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From Atalie:
The engine of a sports car rotates at 5000 revolution per minute. Calculate the angular speed of the engine in radians per second, given that 2pi radians = 1 revolution
Answered by Robert Dawson. |
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A baseball diamond |
2009-11-18 |
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From maelee:
the official distance between home plate and second base in baseball diamond is 120ft. Find the area of the official ball diamond & the distance between the bases.
Answered by Robert Dawson, Chris Fisher and Penny Nom. |
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A computer screen |
2009-11-18 |
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From Leonard:
Whats the pythagorean theorem of computer measured 12"x 12" in length and width, whats the diagonal measurement in 15". Thank You
Answered by Penny Nom. |
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sin x / 1+ cos x = csc x - cot x |
2009-11-18 |
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From Mansi:
i need a hint on how i could prove the following identity:
sin x / 1+ cos x = csc x - cot x
Answered by Harley Weston. |
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The three medians of a triangle |
2009-11-18 |
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From Nazrul:
If the three medians of a triangle are equal, how can I prove (without using the property that the three medians of a triangle cut one another at a point of trisection) that the triangle is equilateral.
Answered by Chris Fisher. |
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Matt has 40 coins |
2009-11-18 |
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From Amy:
Matt has 40 coins(nickels, dimes, and quarters). The total amount is $4.05. He has 7
more nickels than dimes. How many quarters does he have?
Answered by Penny Nom. |
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Two movies in one day |
2009-11-18 |
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From jazzy:
ann and tim saw two movies in one day.The two movies lasted 4hours long .One movie was an half hour longer than the other .How many hours did the shorter movie run
Answered by Penny Nom. |
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How many girls are there in the class? |
2009-11-18 |
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From Anisa:
There are 30 students in a class. A quarter of the boys ans half of the girls study music, making a total of 11 music students. How many girls are there in the class?
Answered by Penny Nom. |
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The base and height of a triangle are in the ratio of 3:2 |
2009-11-18 |
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From Mike:
Find the base and height of a triangle using the ratio 3:2 and an area of 108 inches square. Is there a formula we need to use?
Thanks
Mike
Answered by Penny Nom. |
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6 numbers from 53 numbers |
2009-11-17 |
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From MIGUEL:
IM A STUDENT IN HIGH SCHOOL AND IM HELPING THE SOCCER COACH WITH PLAYS
SO I NEED ALL THE POSSIBLE NUMBER COMBINATIONS OF NUMBERS 1- 53 IN SETS OF SIX
THE NUMBER CAN ONLY BE USED ONCE IN EACH SET.
Answered by Penny Nom. |
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Deducting 10% from £100 |
2009-11-17 |
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From Steve:
What is the correct way of deducting 10% from £100?
Would it be £100 multiplied by 0.1 and then deduct to leave you £90; or
Would it be £100 divided by 1.1 to give you £90.91?
Answered by Penny Nom. |
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Coefficients |
2009-11-17 |
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From Da'mon:
The Coefficients of the expression 8 - 5x - 4 + 3x are 5 and 3
Whether the statement is true or false.
Answered by Penny Nom. |
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One-eighth of one million dollars |
2009-11-16 |
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From Jarrett:
what is 1/8 equal to out of a million dollars.
Answered by Penny Nom. |
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Three angles and one side of a triangle |
2009-11-16 |
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From Esther:
How do i find the sides of an acute triangle if i know the angels are 60,45,75 and i only know one side which is 10? Thanks!
Answered by Penny Nom. |
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