Find a+b,2a+3b, iai, and ia-bi. a[5, -12], b=[-3, -6]

1) 2) 3) 13, 4) 10.

Step-by-step explanation:

Since we have given that

So, we need to find :

1) a + b is given by

2) 2a+3b is given by

3) |a| is given by

4) |a-b| is given by

Hence, 1) 2) 3) 13, 4) 10.

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