Krypton-85 has a half life of 11 years. If a scientist has 500 grams of Krypton-85 in her lab and she decides not to use any for her experiments how much will remain after 50 years? (round to the nearest gram)

Find the least common multiple (lcm) to determine the least common denominator for 2⁄3, 5⁄6, and 9⁄4. a. 9 b. 60 c. 18 d. 12

What is the relationship between multiplying and factoring

Approximately how many feet is in a 100-meter dash? Show your math.

3x - 8y = 1 6x + 5y = 12

You have 26 cards, each labeled with a letter of the alphabet. What is the probability of drawing a car that is a vowel (excluding y) ? a. 1/26 b. 5/13 c. 5/26 d. 5/676

The ratio of blue shirts to white shirts in is 5:3. If there are 21 white shirts how many blue shirts are there?

When 8 is subtracted from the square of a number, the result is 7 times the number. Find the negative solution.

At Ralph's fruitstand three apples cost of $.90 you want to buy seven apples how much will they cost

A rectangular plot of land measures 120 feet by 96 feet. Which dimensions could not represent the plot on a scale drawing? Options: A - 8 inches by 6 inches B - 20 inches by 16 inches C - 15 inches by 12 inches D - 5 inches by 4 inches

The sum of three consecutive integers is 33. Find the numbers. A. 10, 11, 12 B. 12, 13, 14 C. 30, 31, 32 D. 90,91,92