How many permutations of 4 different letters are there, chosen from the twenty six letters of the alphabet?

Completing the square x^2-14x+49=0

The water level in a lake has changed by - 16.8 feet over the last 2.5 years. what is the average change in the water level each year? A) - 6.72 B) - 0.672 C) 0.672 D) 6.72

Evaluate y5 for y = 1.

What is a prime factorization of 32

Jasmine feeds her cat 1/4 cup of food each day. There are 6 cups of cat food in the bag. How many days will the bag of cat food last?

Juan selects 2 colored pencils randomly. There are 4 green, 3 yellow, 4 red, 3 blue and 2 orange. What is the probability Juan chooses a red, replaces it, and then chooses an orange? A: 1 over 32 B: 1 over 30 C: 8 over 225 D: 3 over 8

How do you find the lcd

Process of substitution y=2x-4 4x+5y=22

How do i find the answer to this problem Blank divide by 9=45

What are 3 numbers that could round to 15.5