3 years ago

What is the composition of the most common mineral compounds that make up earths crust and mantle

2 answers:

6 0

<span>Earths crust mineral composition are silicon oxide (SiO2),Magnesium monoxide (MgO),Ferrous oxide(FeO),Calcium monoxide (CaO),Sodium dioxide(Na2O) ,Potassium dioxide(K2O), while the Earths crust are sodium,magnesium,potassium,calcium,iron,aluminum,silicon,and oxygen .Because Earth is based on chemical composition and split up into a crust,mantle,outer core and inner core.</span>

Xelga [282]3 years ago

4 0

Answer:

Silicon, oxygen and one or more metal elements.

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An accounting machine operator wanted to divide an 85-minute job between two identical machines so that one machine would take o

Lubov Fominskaja [6]

To find how much time the machine that took the longer job is, you would create an equation in terms of X, the amount of time it takes one of the machines.

Please see the attached picture for the work.

51 minutes is the longer time.
34 minutes for the other machine.