-3(8x – 10) = 3
help pls lol

Abcd is a square. what is the measure of angle bac

Find the nonpermissible replacement for binthis expression.b2/5b +5

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?