Express 31 billion in scientific notation

195hg = how much cg And how do you show work Thx

Adrianna went on a hiking trip. Which measurement best describes how far she hiked, 10 kilometers or 10 meters?

Enrollment in a photography class increased from 25 to 35 students. What was the percent of increase in enrollment? 14% 29% 40%

How do you set up "maricella has a bag containing 35 nickels and dimes. the total value of these coins is 2.50. what is the number of dimes and number of nickels."

Factor 54+27 using the GCF.

Three rectangular prisms have a combined value of 518 cubic feet. Prism A has one-third the volume of Prism B. Prism B+Prism C. What is the volume of each prism and work behind it?

The lengths of two sides of a triangle are 10 in. and 4 in. What is the length of the third side?

Solve for j -3 (j+82) = 51

Can the circumference and the area of a circle be the same?

Claire jogs no more than 20 miles per week. Which inequality represents the number of miles she runs each week? A. x > 20 B. x < 20 C. x ≥ 20 D. x ≤ 20