If $a$, $b$, and $c$ represent three distinct digits from 1 to 9 and they satisfy the following equations, what is the value of the sum $a+b+c$? (in the equation below, $aa$ represents a two-digit number both of whose digits are $a$.)a+b=c aa-b=2 times c c times b=aa+a

Whats the name of the vertical axis

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)

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?