A 9 gram sample of a substance that's used for drug research has a K value of 0.1459

Find the substances half-life in days, and round answer to the nearest ten. (exponential decay)

Decimal and percent for 8/11

Hector took out a small loan of $900 for 15 months. The simple interest rate on the loan was 15%. How much will he pay in interest on the loan?

Tom's and Tim's ages add up to 21 years. In 3 years, Tom will be twice Tim's age. How old are they now? A. Tom is 15, and Tim is 6. B. Tom is 12, and Tim is 9. C. Tom is 16, and Tim is 5. D. Tom is 14, and Tim is 7.

If 52 is 130% of a number, is the number greater or less than 52? Explain.

The great pyramid has a height of about 480.7 feet and base edges about 756 feet. The base is almost square. Find the approximate volume of this pyramid. A) 571,530 ft B) 90,000,000 ft C) 91,579,118.4 ft D) 274,737,355.2 ft Is it A, B, C, or D?

The lengths of the legs of a right triangle are 8 inches and 9 inches. what is the lengths of the hypotenuse? round to the nearest Ich.

Which equations define Y as a nonlinear function of X?

The surface of a cube is painted blue. The cube is then cut into equal sized smaller cubes, 12 of which have exactly 2 blue faces. How many of the smaller cubes have exactly 1 blue face?

Calculate R8 for f (x) = 6-x over 3,5

From 1960 to 1970, the consumer price index (CPI) increased from 29.6 to 38.8. If a dozen tangerines cost $0.