What is the modulus of 2 – 3i?
A + b = 15 ..... eq 1
a – b = 12 ...... eq 2
So a = 15 – b
Substitute in eq 2 :
15 – b – b = 12
15 – 2b = 12
–2b = 12 – 15
b = 1.5
So a = 15 – 3/2 = 13.5
4ab = 4 x 13.5 x 1.5 = 81
Answer:
The area of the rectangle is 42 units^2
Step-by-step explanation:
we know that
The area of rectangle is equal to

In this problem
AB=DC
BC=AD
see the attached figure with letters to better understand the problem
we have that

the formula to calculate the distance between two points is equal to

we have the points

<em>Find out the distance BC</em>
we have

substitute in the formula



<em>Find out the distance AB</em>
we have

substitute in the formula



<em>Find out the area</em>

we have


substitute

Answer:
actually its depend on how is he working day by day
0,0 1,3 2,4 3,8 4,5 5,5 6,2 7,0 hope that helps