Why is the periodic table called the "alphabet of the universe"

What is the middle of 1/6 and 1 1/3

Order each set of fractions as indicated: 1/9, 1/20, 1/25, 1/2, 1/50

What is the x intercept for y=x2+5x+6?!!

On a spinner, there are twenty equal-size sections numbered from 1 to 20. What is the likelihood that the spinner will stop on a multiple of 25? 1. Likey 2. Unlikely 3. Equally likely as unlikely 4. Impossible

Write using exponents. 5 5 5 b b b b

The heights of a random sample of 50 college students showed a sample mean of 174.5 centimeters and a sample standard deviation of 6.9 centimeters. Construct a 98% confidence interval for the mean height of all college students.

Javiers grandmother lives 120 miles away. It takes 1 hour to travel 40 miles by train. If Javier leaves at 7am it is reasonable to say he will arrive in his grandmother city by 9am

What is the slope and y-intercept of y=2/3x+2?

How do you write 18/40 in a decimal

A six-sided die in which each side is equally likely to appear is repeatedly rolled until the total of all rolls exceed 400