Please help me find the answer to the equation.❤️​

BC ≈ 370 m

Step-by-step explanation:

Using the Cosine rule in Δ ABC

a² = b² + c² - 2bccosA

   = 450² + 220² - (2 × 450 × 220 × cos55°)

   = 202500 + 48400 - 198000cos55°

   = 250900 - 113568.1344

  = 137331.8656 ( take square root of both sides )

a =

  ≈ 370.58314

Then BC ≈ 370 m (  to the nearest 10 m )

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation: