An electrical solder is made by combining 15 g of tin with 85 g of lead. Tin has a density of 7.3 g/cm3 and lead has a density of 11.3 g/cm3. Calculate the density of the solder.

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

Katie wants to collect over 100 seashells. she already has 34 seashells in her collection. each day, she finds 12 more seashells on the beach. katie can use fractions of days to find seashells. write an inequality to determine the number of days, dd, it will take katie to collect over 100 seashells.