Discover Questions

Use the substitution method to find all solutions of the system of equations.
x^2 + y = 4
x− y + 2 = 0 (x, y)= (x, y)= (larger x-value)? Could even the brightest neutron stars be seen from the same distance as proxima centauri,if not what would it look like through a telescope? The purpose of the tourniquet in the venipuncture procedure is? How many different combinations are there for a lock with 50 numbers? How much heat is required to increase the temperature 10.0 grams of water to 6.0 C?