angelika thought of a number n, multiplied it by 7 and added 9. then she told the result to lisa. in what range can n and r vary?

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

How do businesses a country's economy? a. by investing in goods and services b. by increasing the unemployment rate c. by making profits

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?