This is the expression 2a-18

What is the value of the expression below? (81^2)^1/8

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle