To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14). Zack is using which of the following properties?
1.) distributive
2.) inverse
3.) associative
4.) commutative

Olivia is using 160 quilt squares to make a red, yellow, and blue quilt if 25% of the quilt are red and 30% are yellow how many quilt squares are blue

What is the angle measure, or angle of depression, between this bird and the bird watcher?

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?