Robert stands atop a 1,380-foot hill. He climbs down, reaching the bottom of the hill in 30 minutes. What is Robert's average rate of elevation change in feet per minute?

Victor tossed a paper cup and recorded how the cup landed each time. He organized the results as shown below. Find the experimental probability that the cup will land on its side. Express your answer as a fraction in simplest form.

What is 620 divided by 11

What is 12 to the power of 1? is it 1 or 12*12

The difference of the square of a number and 28 is equal to three times the number find the negative solution

The difference between two numbers is greater than the first number and the sum of the two numbers is greater than 21. Find the system of inequalities representing the given situation.

What is the sum or difference? 6x7 + 8x7

Which graph shows the solution set for 2 x + 3 greater-than negative 9? A number line going from negative 8 to positive 2. An open circle is at negative 3. Everything to the left of the circle is shaded.

What are 57,910,000, 108,200,000, 149,600,000, 227,900,000, 778,400,000, 1,424,000,000, 2,867,000,000, and 4,488,000,000 in scientific notation

Lionel wanted to share 4 muffins with his 5 friends. He separated the muffins into 6 equal parts. What is the total amount each person would receive?

Tell whether the ordered pair (1, - 4) is a solution of the given system y = - 4x y = 2x - 2