The length of a rectangle is given by l=3y + 4x while the width is
w- 7y + 2x? . use the box method and write and expression in
standard form that represents the area of this rectangle.

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Empty box + box + empty box fill in the box is equal to 30 how