Probability

Q: Point (A,B) is randomly selected inside the circle x^2+y^2=1. What is the probability that A>B>0? Ans:[spoiler]1/8[/spoiler] I was trying to figure out the solution for this problem but could not get ans: 1/8. Since the radius of the circle is 1, only when point (A,B) is in 1st quadrant shall we ...

Functions-Composition

Q:If g(x)=x^2-x+7, and g(f(x))=9x^2+9x+9, then f(x) is ? OA 3x+2.

How can we solve this question algebraically without plugging back the option into the original expression ? Request an algebraic solution. Please do not plug back the answer into the original expression. Thanks in advance !

In La Plata, Argentina, one of the first cities that was offering the public complimentary wireless Internet access; anyone with a wireless-enabled device can access the Internet from virtually any location in the downtown area. a) that was offering the public complimentary wireless Internet access...

If 96 percent of women 25-59 years of age at Country Q weigh between 97.5 lbs and 155 lbs, and this data is normally distributed, then which of the following is the best approximation for the mean and standard deviation of their weights in pounds, respectively? A. 100 and 30 B. 110 and 25 C. 120, a...

Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 60 miles per hour. If both drivers maintained their speeds and both remained on the high...

Are you sure it's a) ? I think it's c) .

What's the source ?

selango wrote:(x-3)^3=x3-9x2+27x-27

So x3-9x2+18x-12 = (x-3)^3-9x+15

Substituting value of x we will get answer 0


I am not sure whether we will get this kind of long algebra prob in real GMAT.