Each leg of the race from part a is the same distance. calculate the team's average time for each leg of the race. show your work

if the team's average time is less than one minute per leg then the eighth graders earn 50 points. if not the seventh graders earn 50 points. which grade should awarded 50 points

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.