Which expression represents the difference between 18 and an unknown number? A. 18 - n B. 18 + n C. 18 : n D. 18 • n

The speed of nitrogen molecules in the atmosphere (at 20ºC) follows a normal distribution with a mean speed of 500 meters/second and a standard deviation of 50 meters/second. Which conclusion does this information best support?

What is the slope of the line with the equation y = 3/4x + 4

The sum of this 4 digit even number's thousands and ones digit is 10

What is the answer -2 (v+5) - (-1+v) = 21

Miguel Rodriguez borrowed $200 from his brother Julio to pay for his books and tuition. He agreed to pay Julio in 6 months with simple annual interest at 6.1%.

What are three names for a polygon that has four equal sides and no right angles?

A bowler knocks down at least 6 pins 70 percent of the time. Out of 200 rolls, how many times can you predict the bowler will knock down at least 6 pins?

Determine the period and frequency of the function f (x) = cos (4x)

isabel received a $90 gift card for a coffee store. She used it in buying some coffee that cost $8.17 per pound. After buying the coffee, she had $49.15 left on her card. How many pounds of coffee did she buy

Explain how to use the vertex and the value of a to determine the range of an absolute value function.