30 inches = yards? How many yards in 30 inches

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Evaluate cos2θ for cosθ = square root of 3/2