## expressed's tag archives

1

Feb

Feb

# distance h a body wii move in a free fall is expressed by formula h=1/2gt2. if g=980cm per sec t=20sec, h is ?

Posted by Admin in Tuesday, February 1st 2011 3 comments already

27

Jan

Jan

# distance h a body will move in a free fall is expressed by formula h=1/2gt2 if g=980cm per sec and t=20sec h ?

Posted by Admin in Thursday, January 27th 2011 2 comments already

10

Nov

Nov

# Recalling that SAT scores are always expressed as multiples of 10, how many points did you get on the test?

Posted by Admin in Wednesday, November 10th 2010 1 comment so far

Scholastic Aptitude Test (SAT) scores are normally distributed with a mean of 500 points and a standard deviation of 100 points. Suppose you take the SAT and several weeks later you receive a letter telling you that your results on the math portion of the test were in the 95th percentile. Recalling that SAT scores [...]

7

Sep

Sep

# Barrons GRE page 300 exercise 9 why is the area of the triangle expressed as square root of 3?

Posted by Admin in Tuesday, September 7th 2010 4 comments already

The triangle is equilateral and each side measures 2. So if the formula for a triangle area is 1/2bxh why is the book showing this 2square x square root of 3all that over 4. Where does the square root of 3 comes from? Why divided by 4? Thanks!

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