PLEASE HELP URGENT! 25 POINTS Find x:

(If you can please explain how I can figure this out on my own

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?

Write 5 in the form of a/b using integers to show it as a rational number