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find the size of unknown angle in the flowing figures

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i

Flvs question 3 exam: 04.10 segment one exam part two what is the measure of angle x? picture is shown