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forum.virtualchallengemeets.com • View topic - Some questions.

Some questions.

Eighty problems in ten minutes. What's so hard about that?

Some questions.

Postby RobinK » Wed May 02, 2012 9:05 pm

33% of 36 is 44% of ___

If the side of an equilateral triangle is 18 cm, then its area is [unparseable or potentially dangerous latex formula] cm^2. Find k.

[unparseable or potentially dangerous latex formula] ____

44 x 4! - 2 x 6! =

If A is 30% greater than B and B is 40% greater than C, then A is ____ % greater than C.
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Re: Some questions.

Postby rcoker7 » Wed May 02, 2012 9:38 pm

the equation is .33*36=.44*x so x=.33/.44*36=27.

area=side^2/4*sqrt3 so in this case k=81.

I'm gonna assume you meant 5^(x-2). Using exponent rules we get (5^x)/(5^2)=6/25.

try to get a common factorial. 4! is convenient in this case. This means we have 44 x 4! - 6 x 5 x 4! x 2 = -16 x 24 = -184.

b=1.4c and a=1.3b so a=1.3 x 1.4c = 1.82c which means the answer is 82%.
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