Answer:(a) BA = (-3,2) (b) BC = (-9,6)
Step-by-step explanation: (a) Vector BA = position vector of B - position vector of A = vector OB - vector OA = (3-6) i + (4-2) j = -3i+2j [i, j are unit vectors along x and y-axis respectively]. Also vector BA=(-3,2). (b) Vector BC = position vector of B - position vector of C = vector OB - vector OC = (3-12) i + (4-(-2)) j = -9i+6j [i, j are unit vectors along x and y-axis respectively]. Also vector BA=(-9,6).
Lets make the graph of our systems of equations:
The blue line correspond to the equation x-y=3 and the red one correspond to 7x-y=-3. The lines intersect at point (-1,-4), then, the solution of the system is (-1,-4).
Zero because 60 plus negative 60 equals 0
I=prt
Interest = principal X rate X time
You are asking for interest so lets fill in all the variables.
i=2400X.249X(1/12)
I used .249 for rate because you convert the interest rate to a decimal.
I used 1/12 for time because you only need 1 month and time is based off of a year. For example, if you wanted to know how much interest after 3 months you would use (3/12)
Now solve.
i=2400X.249X.0833333
i=49.80
Your interest after one month is $49.80
