The radius of a circular disk is given as 21 cm with a maximum error in measurement of 0.2 cm. (a) Use differentials to estimate the maximum error in the calculated area of the disk. (Round your answer to two decimal places.) cm2(b) What is the relative error? (Round your answer to four decimal places.)What is the percentage error? (Round your answer to two decimal places.) %

A stone is thrown straight up from the edge of a roof, 875 feet above the ground, at a speed of 10 feet per second. A. Remembering that the acceleration due to gravity is -32 feet per second squared, how high is the stone 5 seconds later? Don't forget to enter the correct units. B. At what time does the stone hit the ground? C. What is the velocity of the stone when it hits the ground?

A racecar travels northward on a straight, level track at a constant speed, traveling 0.750 kilometer in 20.0 seconds. The return trip over the same track is made in 25.0 seconds. (a) What is the average velocity of the car in meters per second for the first leg of the run? m/sec (b) What is the average speed for the total trip? (Round your answer to one decimal place.) m/sec Need Help? Read It

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Can balloons hold more air or more water before bursting? A student purchased a large bag of 12-inch balloons. He randomly selected 10 balloons from the bag and then randomly assigned half of them to be filled with air until bursting and the other half to be filled with water until bursting. He used devices to measure the amount of air and water was dispensed until the balloons burst. Here are the data

A typical glass of wine contains about 22 grams of alcohol. Consider a 109-pound woman, with approximately 6 liters (6000 milliliters) of blood, who drinks two glasses of wine. Complete parts (a) and (b) below. a. If all the alcohol were immediately absorbed into her bloodstream, what would her blood alcohol content be? g T00 m (Round to two decimal places as needed.) 100 mL

df (SSTR)= 4, df (SSE) = 15, SST =120 and SSE = 300. Calculate the value of the F ratio. a. 4.3 b. 1.5 c. 4.9 d. 3.1

The table below gives the population of the small (imaginary) town of Wisteria. What is the average rate of change of the town's population from 1970 to 1980? Give your answer with one decimal place of accuracy to the right of the decimal point, and give appropriate units for your answer.