Simplify, using order of operations:
81 -2[5(3+4)]

5

Step-by-step explanation:

Let's work from the middle of the equation to the outside of it. Our first part of the equation is 3+4, which equals seven, so we have the equation:

81-2[5(7)]

Then, we multiply 5 and 7, which is 35, so we get the equation:

81-2[35]

Then we have -2 outside of the brackets, so we can multiply -2 and 35, which is -75, so we have the equation:

81-75

Which is 5.

~Stay golden~ :)

the two may have that, even a breakdown is probably offered

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is