There are 3 blue rings, 4 red rings and 8 yellow rings. 4 pairs of shoes cost $80. What is the cost of 7 pairs of shoes ?

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).

no because mercury has a density of 13.6 grams per centimeter squared while gold has 19.32 grams centimeter squared

step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3