Find an ordered pair to represent a in the equation a = 2b + c if b=(6,3) and c=(-4,8)

The ordered pair to represent a in the equation a=2b+c if b=(6,3) and c=(-4,8) is: a=(8,14)

Step-by-step explanation:

b=(6,3)

c=(-4,8)

a=2b+c

Replacing b and c in the equation above:

a=2(6,3)+(-4,8)

Multiplying:

a=(2*6,2*3)+(-4,8)

a=(12,6)+(-4,8)

Adding:

a=(12+(-4),6+8)

a=(12-4,14)

a=(8,14)

5.50699301 x 10 power of -1

Step-by-step explanation:

3.5 x 108 = 378

6.6 x 104 = 686.4

378/686.4 = 0.550699301

0.550699301 = 5.50699301 x 10 power of -1