in a circle of radius 28 cm, an subtends an angle of 45° at the centre, then find the length of the arc(in cm)​

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books