Which expression represents the determinant of

A = [2 3]

[1 9]

(A) det (A) = (2) (9) - (1) (3)

(B) det (A) = (2) (9) + (1) (3)

(C) det (A) = (2) (3) - (1969)

(D) det (A) = (2) (3) + (1) (9)

Arnold buys 8/9 pound of ground turkey. he uses 3/4 pound of the ground turkey to make meatballs. how many pounds of ground turkey are left

What is 6 (7-2x) + 7=49

The formula for (a-b) ^2 is a^2-2ab+b^2. (x-2) ^2=x^2-2*x * (-2) + 4 =x^2+4x+4 I solved this. Why is not correct to take the second number negative? I mean, the solution for the exercise is x^2-4x+4. Why is it negative instead of positive?

A taxi cost $1.65 for the first mile and $0.85 for each additional mile. Which equation could be solved to find the number x if additional miles traveled in a taxi given that the total cost of the trip is $20

A pole is 3.2 m tall casts a shadow that is 1.4 m long. A nearby building cast a shadow that is 46.25m long. How tall is the building. Round to the nearest meter

Bert is planning to open a savings account that earns 1.6% simple interest yearly. He wants to earn exactly $160 in interest after two years. How much money should he deposit?

Consider the following data which describe the amount of time in minutes students spend studying for a quiz: 10, 11, 11, 12, 12, 14, 15, 18, 19, 20, 22, 24, 39, 40, 41, 44, 46, 50, 52, 52, 53, 55, 70.

Employee Earnings per month ($) 1 1200 2 2600 3 1800 4 1450 5 3500 6 2800 7 12500 8 3200 Which measure of spread is best for the data in the table? A.) range B.) quartiles C.) interquartile range D. mean absolute deviation

Identify the two whole between which the product lies 5*7/10

Hannah and Francine have $120. Hannah and Peter have $230. Peter has 6times as much money as Francine. How much money does Hannah have?