What is the Least Common Multiple (LCM) of the two monomials: 450x2y5 and 3,000x4y3?
Select one:
2xy
30xy
150x^2y^3
9,000x^4y^5
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OpenStudy (anonymous):
find the LCM of 450 & 3000
OpenStudy (anonymous):
2xy?
OpenStudy (anonymous):
|dw:1389304897964:dw|
LCM is 10 * 5 * 3 * 3 * 20
OpenStudy (anonymous):
9000
OpenStudy (anonymous):
yes For LCM...you take the highest value of the exponents
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OpenStudy (anonymous):
oh wow can you help me with some other problems?
OpenStudy (anonymous):
sure
OpenStudy (anonymous):
Which of the following inequalities is true for all real values of x? (Hint: Try plugging in some positive and negative values for x to help see which one works all the time).
Select one:
x^3 ≥ x^2
3x^2 ≥ 2x^3
(2x)^2 ≥ 3x^2
3(x – 2)^2 ≥ 3x^2 – 2
OpenStudy (anonymous):
what have you tried
OpenStudy (anonymous):
none because I don't get it
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OpenStudy (anonymous):
Test the situations:
x^3> x^2 Try x = -2
-2^3 > -2^2
-8>4 no...so it's not a
OpenStudy (anonymous):
Nope
OpenStudy (anonymous):
3x^2 > 3x^3 let x = 2
3*2^2 > 3*2^3
3*4 > 3*8 nope...not today
OpenStudy (anonymous):
(2x)^2 > 3x^2 let x = 4
(2*4)^2 > 3*4^2
8^2 > 3*16
16> 48 Nope
OpenStudy (anonymous):
3(x – 2)^2 ≥ 3x^2 – 2
yes
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