What is the probability of rolling a prime number of a standard 20-sided die? (1 is not a prime number.)

a. 7/20

b. 2/5

c. 9/20

d. 1/2

Is this a true proportion? 15. 22:88::10: 40

Reduce sixteen over twenty four

What is 54.039 in word word

What is the approximate perimeter of a semicircle with a radius of 8 m? Use pi star times = 3.14. Express your final answer to the nearest hundredth.

U. S. Population can be modeled by the function f (x) = 165.6x^1.345, where f (x) is in thousand and x is the number of year after 1800. What is f (50) and what does it mean?

Fe + Zn²⁺ → Fe²⁺ + Zn. Which element is being reduced?

A 150-pound person burns 6.3 calories per minute when walking at a speed of 4 miles per hour. While walking, this person eats a snack that has 90 calories. This snack subtracts from the calories burned while walking.

Find the length of the rectangle whose vertices are given. A (2, 1), B (5, 4), C (0, 3), D (3, 6)

Is the system of equations is consistent, consistent and coincident, or inconsistent? y=-3x+12y=-6x+2

Michael earns $6.50 an hour plus tips. Last night he received $36.50 in tips and earned a total of $65.75. How many hours did he work?