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
find the LCM of 450 & 3000
2xy?
|dw:1389304897964:dw| LCM is 10 * 5 * 3 * 3 * 20
9000
yes For LCM...you take the highest value of the exponents
oh wow can you help me with some other problems?
sure
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
what have you tried
none because I don't get it
Test the situations: x^3> x^2 Try x = -2 -2^3 > -2^2 -8>4 no...so it's not a
Nope
3x^2 > 3x^3 let x = 2 3*2^2 > 3*2^3 3*4 > 3*8 nope...not today
(2x)^2 > 3x^2 let x = 4 (2*4)^2 > 3*4^2 8^2 > 3*16 16> 48 Nope
3(x – 2)^2 ≥ 3x^2 – 2 yes
Test a number to be sure
ok
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