Solve the system using elimination. 4x +12y = 12
4x - 12y = 12
The solution is
(Type an ordered pair.)

Point of origin 'POI' =(3,0)

Step-by-step explanation:

(i)check both equations.The coefficient of x and y should be the same .And then eliminate .If the coefficient are different then multiply by a constant.

(ii)subtract the term either from x and y to make it equal to zero.

(iii)substitute y value to one of the equation.

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west