Please help me with this algebra word problem: my question is how do you find the length of a side with the area of 820 square kilometers and then rounding to the nearest thousand

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

sine

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.