What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

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?