You’re working for a marketing firm and you are asked to collect some data on the kinds of new cars that people are driving your assignment is to go to a local shopping center and count the number of new cars of 10 specific brands that come in through the entrance in one day you can’t 1121 Honda 1216 Toyota is 987 Ford 358 Chevrolets 411 Buick’s 16 hammers 130 for BMWs 214 Lexus is 451 Subarus and 42 jeeps make a bar graph to show the results of your observations

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

cosine

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,