MHB Expressing a number in scientific notation and factoring a cubic

AI Thread Summary
The discussion focuses on checking the correctness of answers related to scientific notation and factoring a cubic expression. The user expressed the number 0.00024 in scientific notation as 2.4 x 10^-4, which is confirmed to be correct. Additionally, the user factored the cubic expression 3x^3 - 18x^2 + 24x as (3x)(x - 4)(x - 2), which is also verified as correct. The thread emphasizes the importance of peer validation in solving mathematical problems. Overall, both answers provided are accurate.
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Basically I don't know anyone in real life that can help me with this, so I need help checking to see if my answers are correct :)

PART A

5) Express .00024 in Sci Notation

My answer: 2.4 x 10^-4

6) Factor the following completely: 3x^3 - 18x^2 + 24x

My Answer: (3x)(x - 4)(x - 2)
 
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Re: Please check my answers - 3

Both correct.
 

Thread 'Trigonometry problem of interest'

Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...
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