Addition strategies for third graders

Dr. Anthem has a piece of Roman pottery that is 954 years old. This is one third as old as a piece of his Grecian pottery. How old is his piece of Grecian pottery

6b + (2b+4c) = how do I solve this

Solve: a/-6 + 8 = 12. A=

The lifespan of lions in a particular zoo are normally distributed. The average lion lives 10 years: the standard deviation is 1.4 years. Use the empirical rule (68-95-99.7%) to estimate the probability of a lion living less than 7.2 years

Fernando has gathered details about his finances to create a financial assets and liabilities record. Which represents one of his liabilities? A. His credit card balance is $521. B. His household items are worth about $5200. C.

A store ordered 28 boxes holding 12 banana muffins each and five boxes holding 6 blueberry muffins each. What was the total number of muffins the store ordered?

Use substitution to solve the system of equations. y = - 2x x - 3y = 21 (3, 4) (-6, 12) (3, - 6) (-2, - 6)

Solve x/42=3/7 using two different strategies. explain each strategy

Jerry kitten grew 3cm between the age 4and 5 months. The kitten grew 2cm between the ages of 5 and 6 months. At 6 months the kitten is 19cm tall was jerry kitten at the age 4months

Find the discriminant and the number of real roots for this equation 9x^2+12x+4=0