Kaylee found the surface area, in square inches of a rectangular prism by using this formula.

2(5 × 3) + 2(5 × 8) + 2(3 × 8)

what is the surface area of the prism, in square inches?

158

238

40

85

158 in^2

Step-by-step explanation:

To determine the surface area of a rectangular prism, the Equation is: 

Surface Area  = (length x width + width x height + length height)x 2

The surface area with:

 length of 2(5 x 3), a width of 2(5 x 8), a height of 2(3 x 8)

              SA =  2(15) = 30,  SA = 2(40) = 80, SA = 2(24)= 48, 

                             SA = 30 + 80 + 48

                             SA = 158 square units.

SA = 2LW + 2LH + 2HW

SA = 2(5 x 3) + 2(5 x 8) + 2(3 x 8)

SA = 2(15) + 2(40) + 2(24)

SA = 30 + 80 + 48

SA = 158 in^2

So, your answer is: 158 in^2

The surface area is 158 sqr inches

As Kaylee has already written the formula so we just solve it

= 2(5 × 3) + 2(5 × 8) + 2(3 × 8)

= 2(15) + 2(40) + 2(24)

= 30 + 80 + 48

= 158

40% off the regular price is the correct answer.

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