Search & Filtering
Consider the constant rate of depreciation value of a certain car. You bought a car amounting to 1.5 million pesos. After 2 years, the value decreased to 1.2 million pesos. If the amount of the car is directly proportional to the constant rate of decay in amount and such decrease in amount continues at the same rate, then how much is the estimated value of the car after 10 years?
A student does 1.6 104J of work. In the process, his internal energy decreases by 4.23 104 J. Determine a) W b) DU c) Q
Americans ate an average of 25.7 pounds of confectionery products each last year and
spent an average of $61.50 per person doing so. If the standard deviation of consumption is 3.75 pounds and the standard deviation of the amount spent is %5.89, find the following:
a. The probability that the sample mean confectionary consumption for a random sample
of 40 American consumers was greater than 27 pounds.
b. The probability that for a random sample of 50, the sample mean for confectionary
spending exceeded $60.00
The average per capita spending on health care in United States is $5274. If the standard
deviation is $600 and the distribution of health care spending is approximately normal, what is the probability that a randomly selected person spends more than $6000? Find the limits of the middle 50% of individual health care expenditures.
Balance the redox reaction using the steps on the oxidation state method(10 pts)
HNO² + HI -> NO + I² + H²O
At 88 meters high a rock is thrown horizontally from the top of a cliff, with a horizontal speed of 25 m/s. Now, what's the direction of velocity and with what velocity does the rock hit the ground?
What is the horizontal force needed to accelerate a 42 kg grocery cart from rest to a velocity of 0.80 m s in 1.75 s
What is the horizontal force needed to accelerate a 42 grocery cart from rest to a velocity of 0.80 m/s in 1.75s
Determine the ΔS system given the reaction :
C6H12O6 (s) + O2(g) --------------→ CO2 (g) + H2O(l)
a company produces mosquito repellents that have a period of effectiveness that is approximately normally distributed with a mean of 300 hours and a standard deviation of 30 hours. A sample of 40 repellents was taken and the average period of effectiveness is computed as 290 hours. Test the hypothesis that µ = 300 against the alternative that µ ≠ 300
