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.)

step-by-step explanation:

sry but any answer choices

answer: idk

step-by-step explanation:

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form