Divide.91,772 ÷ 270
A. 339 r 242
B. 339
C. 242
D. 339 r 232
Answer: A
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Decide whether the statement is an example of the commutative, associative, identity, inverse, or distributive property.5(x + 6) = 5x + 5 ? 6
A. Distributive B. Commutative C. Identity D. Associative
A manufacturer of wooden chairs and tables must decide in advance how many of each item will be made in a given week. Use the table to find the system of inequalities that describes the manufacturer's weekly production.Use x for the number of chairs and y for the number of tables made per week. The number of work-hours available for construction and finishing is fixed.
A. 2x + 5y ? 20 2x + 2y ? 12 x ? 0 y ? 0 B. 2x + 5y ? 20 2x + 2y ? 12 C. 2x + 5y ? 20 2x + 2y ? 12 x + y ? 0 D. 2x + 5y ? 20 2x + 2y ? 12 x ? 0 y ? 0
Solve.Melissa invested a sum of money at 3% annual interest. She invested three times that sum at 5% annual interest. If her total yearly interest from both investments was $5400, how much was invested at 3%?
A. $22,500 B. $202,500 C. $30,000 D. $67,500
Solve the problem.In the formula A(t) = A0ekt, A(t) is the amount of radioactive material remaining from an initial amount A0 at a given time t and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain site. If it has 74% of the carbon-14 it originally contained, what is the approximate age of the artifact, rounded to the nearest year? (carbon-14 decays at the rate of 0.0125% annually.)
A. 2409 yr B. 1046 yr C. 5920 yr D. 2080 yr