You dont have to answer all the questions at least the first ! 57x^5 / 19x^2 what is the excluded value(s) of the variable? how did you you find the value? and why it works?

X2 + y 2 = 36 x + y = 6 solve the system of equations.

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca

Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points