Aman bought 42 stamps, some 134 and some 18¢. how many of each kind did he buy if the cost was $6.66? if x represents the number of 13 cent stamps and y the 18 cent stamps, which system represents the problem?

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?

What is the scientific definition of energy that relates to work

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer