Point k lies at (-3,4). Point k is reflected over the y-axis and then translated 7 units down to produce K'. Which rule could have been used to produce K' from K?
K(x, y) +K'(x, y-7)
K(x, y) →K'(-x, y-7)
K(x, y) →K'(x, -y-7)
K(x, y) → K'(-x-7.-y-7)

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°

Hello, i need compare km^2 and km. what's difference in this?