Your physics class decides to perform an experiment on circular waves. First, you make sure the water in the school swimming pool is level with by no waves. Next, a volunteer tosses a small
marble near the center of the pool.
Your teacher tells you the radius in feet, r(t), of the outer ripple
is given by r(t) = 0.73t, where t is the time in seconds after the marble hits the water given. The
area of the circle is given by the function Ar) = mra, where A(r) is the area in square feet and r is
the radius in feet. Give an eaquation for the function

step-by-step explanation:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

for the free

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step-by-step explanation: