A silversmith mixed 100 g of a 40% silver alloy with 40 g of a 12% silver alloy. What is the percent silver concentration
of the resulting alloy?

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the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734