Are the ratios 3:9 6:18 9:27 12:36 and 15:45 all proportional?

Which is better average: 10 of 15 free throws or 8 out of 10 free throws? Which is a better average?

Define the term of greatest common factor

A store sells 8 unscented candles for $2 or 9 scented candles for $3. A classmate writes the unit rates: 4 over 1 & 3 over 1. She says one scented candle costs $3 and one unscented candle costs $4. Do you agree? Explain.

The mean biology score of all undergraduate students at a college in a given year is 67.8, with a standard deviation of 11.5. What is the standard error of the mean for a sample of 70 students?

There are 40 students in a class, 23 have dark hair, 18 have brown eyes and 26 have dark hair, brown eyes or both how many students have neither dark nor brown eyes

What is 0.537 x 0.98?

A circular playground has an area of about 1500 square feet. If the committee decides to double the radius, what is the approximate area of the new playground?

If U = 6 feet, V = 7 feet, W = 3 feet, X = 6 feet, Y = 12 feet, and Z = 4 feet, what is the area of the object?

What are 3 consecutive integers who's sum is 396?

Given an arithmetic sequence in the table below, create the explicit formula and list any restrictions to the domain. A. a_n = 9 - 3 (n - 1) where n ≤ 9 B. a_n = 9 - 3 (n - 1) where n ≥ 1 C. a_n = 9 - 6 (n - 1) where n ≤ 9 D.