Plz ! the diameter of a certain planet is approximately 3x10^7 meters (aka 30000000 meters). the length of a certain city is approximately 5x10^4 meters (aka 50000 meters). how many times greater is the diameter of the planet compared to the length of the city?

(b) suppose that consolidated power decides to use a level of significance of α = .05, and suppose a random sample of 100 temperature readings is obtained. if the sample mean of the 100 temperature readings is x⎯⎯ = 60.990, test h0 versus ha and determine whether the power plant should be shut down and the cooling system repaired. perform the hypothesis test by using a critical value and a p-value. assume σ = 5. (round your z to 2 decimal places and p-value to 4 decimal places.)

Can someone me find the original price? the discount is 5% and the sale price is $68.40

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.