Solve the quadratic equation by taking square roots. 3x2 − 4 = 28

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6