Which of these best describes earth’s mantle? most dense layer, consists of the outer and inner parts thinnest under the oceans and thickest under continents middle layer, density increases with depth as pressure increases least dense layer overall, consists of two layers of different thickness

Earth's core is the most dense layer and it consists of the outer core and the inner core.

Step-by-step explanation:

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step-by-step explanation:

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x