What exactly is the question? I dont see any
he polynomial x(5x² + 10x + 15), it is not completely factored, 5x² + 10x + 15 can still be factored into two binomials.
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Polynomial</h3>
Polynomial is an expression that involves only the operations of <em>addition, subtraction, multiplication </em>of variables.
Given the polynomial x(5x²+10x+15), it is not completely factored, 5x²+10x+15 can still be factored,
Find out more on Polynomial at: brainly.com/question/2833285
Set up a proportion.
2/3 = 12/x. Cross multiply the proportion.
2x = 36. Solve for x.
x = 18.
0.4(420) = 4(420)/10
(0.4 is essentially 4/10)
1680/10 = 168
There are 168 sixth graders
