A mining company owns two mines. These mines produce an ore that can be graded into two classes : regular grade and low grade. The company must produce at least 420 tons of regular-grade and 540 tons of low-grade ore per week. The first mine produces 6 tons of regular-grade and 18 tons of low-grade ore per
hour. The second mine produces 18 tons of regular-grade and 9 tons of low-grade ore per hour. The operating cost of the first mine is $26.000 per hour, and the
operating cost of the second mine is $12,500 per hour. The first mine can be operated no more than 40 hours a week, and the second mine can be operated no
more than 38 hours a week. How many hours per week should each mine be operated to minimize the cost?

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).

answer: (1,3) (3,-1) (5,-5) ?

step-by-step explanation:

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32

could u provide us some answer choices or hmm idk maybe a table for us to anser with ? ?