Solve each of the following addition and subtraction problems.–12 + 19 = ?

It equals 7!

Step-by-step explanation:

count from -12 backwards 19 times, and that will be your answer!

Or you could simply just subtract 19-12=7!

Hope This Helps! :-)

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

2

step-by-step explanation: