5. A circle has an arc whose measure is 80° and whose length is 887. What is the diameter of the circle? 6. A circle has a circumference whose length is 257. Find the length of an arc whose central angle is 90° 7. Find the measure of the central angle of an arc if its length is 14n and the radius is 18.

Why is the sum of the square roots of positive numbers always greater than the square root of their sum, but the sum of two squared numbers always less than the square of the sum of those same two numbers?

Can I get a step by step please

For the following story problems:1st) Define the variable(s) – there will be either 1 or 2 variables 2nd) Write an equation or system of equations3rd ) Solve and answer the questions using the correct units Mr. Baker owns and operates a company that manufactures calculators. In a single day it costs $2400 for operational costs plus $15 to build each calculator. The company sells the calculators for $39 each. How many calculators must the company sell in a single day in order to make a profit?