Aferris wheel with a diameter of 50 feet makes one revolution every 40 seconds. how many seconds does it take for a rider to travel from the bottom of the ferris wheel to a point 30 feet above the ground?

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.