A mason will lay rows of bricks to build a wall. The mason will spread - inch of mortar on top of all but the last row of bricks. The finished wall will be 13 inches less than 4 feet high. Answer parts a and b below.

a. The mason wants to lay the bricks so that the shortest edge of each brick is vertical. How many rows of bricks are needed? Show your work.

times

Let b equal the number of rows of bricks. The total height of the bricks in inches is equal to times The total height of the mortar is equal to

Their sum is equal to the height of the wall or inches. If I write this as an equation and solve for b, then the result is rows of bricks.

(Simplify your answers.)

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

You spin the spinner shown below once. each sector shown has an equal area. what is p(beaver ) p(beaver)? if necessary, round your answer to 2 2 decimal places.

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?