Use the commutative property to write an equivalent expression 4(6) =

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons

At a local museum, the total price for one adult and one child is $11. mrs. smith paid for herself and her three children. she spent $19. record the system of equations to be solved and then find the price of an adult and child ticket using either elimination or substitution.

How many quarts of a 50% solution of acid must be added to 20 quarts of a 20% solution of acid in order to get a 40% solution of acid?