Sue is a software engineer. she wants to create a large scale drawing of a processor inside a cell phone. the processor is a square chip 9 mm 9 mm9, start text, space, m, m, end text on each side.
draw the processor such that
1
11 unit on the grid below represents
1
2
mm
2
1

mmstart fraction, 1, divided by, 2, end fraction, start text, space, m, m, end text.

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".

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

answer: just subtact the units and then add the non negative : happy to

step-by-step explanation:

dont think so

step-by-step explanation: