If the mass of a proton is 2.34 × 10–14 grams, what is the mass of 1,000 protons?

2.34 × 10–11 g

2.34 × 10–13 g

2.34 × 10–12 g

2.34 × 10–17 g

The standard distance between studs in a house is 1.5 feet. if you have a set of blueprints for a house that mark every 1.5 feet with 2 in., by how many inches will a 13-foot wall be represented?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?