What statement is a correct expression of the law of conservation of mass? choose one answer a. the total mass decreases during a chemical reaction b. the total mass increased in a chemical reaction. c. the total mass remains the same during a chemical reaction. d. the total mass is unpredictable in a chemical reaction. i will give brainliest answer whoever give correct one

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

Question 10jur's car can travel 340 miles on 12 gallons. jack's car can travel 390 miles on16 gallons. which person has the best mileage (miles per gallon) and what istheir mileage?

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39