If A and B are 2x2 matrices, det (A) = -1, det (B) = 3, then

det (AB) =

det (-2A) =

det (A^T) =

det (B^-1) =

det (B^4) =

What's is the value of y in the equation 5x + 2y = 20 when x=0.3

Suppose you just have just enough dimes and quarters to pay for a loaf of bread and quart of milk, which cost $3.45. You have a total of 15 dimes and quarters. Let d = the number of dimes you have. Let q = the number of quarters you have. a.

Thomas begins an exercise routine for 30 minutes each day. each week he plans to add 5 minutes per day to the length of his exercise routine. for how many minutes will he exercise each day of the 6th week?

The table below shows the movie preferences of high school and college students: Movie Preference Action Drama Comedy Row totals High School 40 23 12 75 College 20 51 28 99 Column totals 60 74 40 174 Julie mistakenly calculated the conditional

2.1.4 practice modeling multi step linear equations

On a map 1 inch equals 18.4 miles. If two cities are 4.5 inches apart on the map, how far are they actually apart?

What is 66 tens-30 tens

A measuring cup holds 250 mL. How many times must the measuring cup be filled to measure 1 L of water?

What is y in the equation 14-6y=44

The period T (in seconds) of a pendulum is given by T=2/pi / sqrt ((L) / (32)), where L stands for the length (in feet) of the pendulum. If / pi = 3.14, and the period is 1.57 seconds, what is the length?