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Write a program that allows the user to enter an af grade and issues a message corresponding to each grade according to the grade entered: A-excellent D- enough B-good F- Not enough c-regular

In the agenda for the next fifteen days, the tasks that must be developed are assigned. Your boss asks you to divide the tasks into three stages. In the first stage, you must develop 2/7 of the tasks, in the second stage, 2/3 of them. what remains and in the third stage the rest, which corresponds to 20 hours. The hours used in the first and second stages are respectively:

Prove that in every right triangle whose acute angles measure 75 and 15 degrees, the height corresponding to the hypotenuse is equal to a quarter of it.

A credit card has an interest rate of 23% per annum and charges interest daily. Calculate the effective annual rate on this card. (if the answer is 10.55%, write it as 0.1055, use four decimal points)

2.152/16

A normal distribution has a mean of µ = 80 with σ = 20. What score separates the highest 40% of the distribution from the rest of the scores?

Equilateral triangle how to label each side

Consider the function f (x, y) = x3 + y subject to the constraint g (x, 3) = 2x + y - 6 = 0

There are two mutually exclusive investment projects available to you. Project A achieves an internal rate of return of 7.35%. Project B requires an initial payout of CHF 4,200 and produces a deposit of CHF 5,600 at the end of its useful life (4 years). In addition, for project B you have to pay a bolting fee of CHF 300, which is due at the end of the useful life. The calculation interest rate is 8.00% pa. What is the internal interest rate of Project B? And which project is preferable based on the internal interest rate?

A triathlete competes in a triathlon in which the swimming, biking, and running segments are all of the same length. The triathlete swims at a rate of 2.5 kilometers per hour, bikes at a rate of 18 kilometers per hour, and runs at a rate of 9.2 kilometers per hour. What is the triathlete's average speed, in kilometers per hour, for the entire race?