A U. S. penny has a mass of 2.5 grams. A U. S. quarter has a mass of 5.67 grams. What is the total mass of the two coins (pls help lol)

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%

The value of cos 30° is the same as which of the following?

Julie multiplies 6.27 by 7 and claims the product is 438.9 .explain without multiplying how you know juliesanswer is not correct.find the correct answer