What is the Mean of 27, 20, 15, 31, 13, 22, 31, 5

How do you simplify and divide x-5 over 5-x?

1. A school has 10 classes with the same number of students in each class. One day, the weather was bad and many students were absent. 5 classes were half full, 3 classes were 3/4 full and 2 classes were 1/8 empty. A total of 70 students were absent.

For a wedding the bride must select 4 bridesmaids from her 6 closest friends and must arrange them in order for the ceremony. How many arrangements of 4 bridesmaids from her 6 closest friends? A. 24 B. 360 C. 750 D. 1296

Roxanne decides she's going to make cookies. Her recipe requires her to use 1 1/4 cup of sugar for each batch. Roxanne's Mom checked and they have 15 cup od sugar in the house. How many batches of cookies can Roxanne make with the sugar they have?

A trumpet has a length of 140cm. The first valve lowers the root note by two semitones (f1/f0 = 2-2/12) and the second valve lowers the root note by one semitone (f2/f0 = 2-1/12). A) What is the change in length for each case? (i. e.

How many inches are equivalent to 2 meters? Round your answer to the nearest tenth. The measurement 2 meters is equivalent to inches.

Mila factored m2 + 12mn + 144n2 as shown. I know that since = m and = 12n the first and third terms of the trinomial are perfect squares. This means that m2 + 12mn + 144n2 = (m + 12) 2. Comment of Mila's strategy.

Solve for b. + b = - 1 b = ? you need to find the value of b

Write a rule to describe each transformation. A (4, 5), B (-3, 5), C (2, - 4) to A' (10, 12.5), B' (-7.5, 12.5), C' (25, 31.25).

Which of the sets of ordered pairs represents a function A = { (-4,5), (1, - 1), (2, - 2), (2, 3) } B = { (2, 2), (3, - 2), (9, 3), (9, - 3) } Answers 1. Only A 2. Only B 3. Both of them 4. Neither of them