In the neighborhood park there is a circular grassy picnic area, but half of the grass has died. the city wants to replant the grass, but needs to know the square footage of the damaged area. if the circular picnic area is 150 feet across, what is the square footage of the damaged area? let pi = 3.14
a) 471 sq. ft
b) 8831.25 sq. ft
c) 17662.5 sq. ft
d) 35325 sq ft

Astandard deck of cards contains 52 cards. one card is selected from the deck. (a) compute the probability of randomly selecting a seven or king. (b) compute the probability of randomly selecting a seven or king or jack. (c) compute the probability of randomly selecting a queen or spade.

What are the sotions to the quadratic equation 9x^2=4

In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d. what is the height of the tide after 93 hours?