Which of the following expressions represents the phrase "19 less than a number"?

n - 19

19 - n

n : 19

n + 19

The volume of a box varies directly with its length. if the box has a volume of 90 cubic inches and a length of 15 inches, what is the constant of proportionality for the box?

What is 8,670,000,000 in scientific notation?

Ricardos mother is 3 times as old as Ricardo. The sum of their ages is 72. How old is Each?

Solve. X = - 7 x = 25 x = 0.2 x = 6.5

Landon is standing in a hole that is 5.1 ft deep. He throws a rock, and it goes up into the air, out of the hole, and then lands on the ground above. The path of the rock can be modeled by the equation y = - 0.005x 2 + 0.41x - 5.

Factor out the greatest common factor of 64d^4 - 24d^2

Lilana claims that she can construct a triangle from a 12 inch rod a 36 inch rod and a 39.4 rod which statement explains wheather she is correct

A recreation center is offering special prices on its pool passes and gym memberships for the summer. On the first day of the offering, a family paid $96 for 4 pool passes and 2 gym memberships.

Fran paid a $50 registration fee to join the gym. she pays $20 each month. how much will fran pay for a year membership at the gym

The press box at a baseball park is 33.0 ft above the ground. A reporter in the press box looks at an angle of 19.0 degrees below the horizontal to see second base. what is the horizontal distance form the press box to second base?