Will give brainliest for the correct

which ordered pair (m, n) is a solution to the given system of linear equations?

6m-5n=14
2m+2n=-10

(–4, –1)
-31/11 & -24/11
(–1, –4)
(11, –16)

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

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?

In order for the function to be linear, what must m be and why? m = 22 because the rate of change is 1. m = 20 because the rate of change is 3. m = 22 because the rate of change is -1. m = 20 because the rate of change is -3.