What is the distance between coordinates E(4,7) and F(9,-5)?Round to the nearest tenth
using your distance formula, which is really just the Pythagorean Theorem,
√((9-4)^2 + (-5-7)^2 = √(5^2 + 12^2) = 13
You would do yourself a favor by memorizing some basic Pythagorean triples, such as
3-4-5, 5-12-13, 8-15-17, 7-24-25
and their multiples. It could save you some calculations.