If v = 5i + 4j and w = 6i – 9j, find each of the following vectors:
a. v + w
b. V – w.

a. = 11i - 5j

b. = -i + 13j

Step-by-step explanation:

from the question we were given

v = 5i + 4j

w = 6i - 9j

we are to find

a. v + w

b. v - w

a)  v + w

(5i + 4j )+ (6i - 9j)

5i + 4j + 6i - 9j

collect the like terms

11i - 5j

b) v - w

(5i + 4j) -( 6i - 9j)

5i + 4j -6i + 9j

collect the like terms

5i - 6i  +4j + 9j

-i + 13j

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: