Karl draws an 8 inch by 5 inch rectangle. then he shades half of the rectangle. what is the area of the shaded part of karl's rectangle?

Hey! That's my name! Spelled right too.

The rectangle's area is the length times the width. 8 * 5 = 40.

He... I shade half of it. 40 / 2 = 20.

The area of the shaded part is 20 square inches or 20 in²

If the length of the rectangle is 8 inches and the width is 5 inches, you can take half of the rectangle by drawing a line down the middle of the length. since half of 8 is 4, the length of the shaded rectangle would be 4 inches. The width would remain the same.

now that we have the length of 4 and width of 5 we can solve for area

A = L x W

A = 4 x 5

A = 20 inches²

hope this helped

sorry, i can't understand your question. will later if you describe more clearly!

: )

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".