If 2a = 80 and b = c, what is the measure of bA.) 40B.) 50C.) 80D.) 100 Question solved general 4 months ago 3504
Joy needs to mix a 20% acid solution with a 60% acid solution to create 100 millileters of a 28% solution. How many millileters of each solution must Joy use? Question solved general 4 months ago 6997
a rocket is launched from a tower. the height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second.equation: y=-16x^2+153x+98 Question solved general 4 months ago 4182
A town in east Texas received 20 inches of rain in two weeks. If it kept raining at this rate for a 31−day month, how much rain did the town receive? Round your answer to the nearest inch. The town received approximately inches of rain during a 31−day month Question solved general 4 months ago 1697
A manufacturer knows that their items have a normally distributed length, with a mean of 7.1 inches, and standard deviation of 1.7 inches.Round your answer to four decimals.If 24 items is chosen at random, what is the probability that their mean length is less than 6.2 inches? Question solved general 4 months ago 9106
A pump can fill a swimming pool in 8 hours. The pool also has a drain that can empty the pool in 10 hours. If someone turns on the pump to fill the pool, but forgets to shut the drain, how long would it take for the pool to fill? Question solved general 4 months ago 7409
Find the cotangent, cosine, and tangent of both angles A and B.If you could put it in this format: Cotangent - Cosine - Tangent - that would be epic :^D Question solved general 4 months ago 7648
In the graph, the area above f(x) is shaded and labeled A, the area below g(x) is shaded and labeled B, and the area where f(x) and g(x) have shading in common is labeled AB.(insert photo from below)The graph represents which system of inequalities? A: y > 2x − 3 y > −x − 3B: y < 2x − 2 y < −x + 3C: y ≤ 2x − 2 y > −x + 3 D: None of the above Question solved general 4 months ago 4267
A game spinner has eight equal sections: three sections numbered 1, one section numbered 2, and four sections numbered 3. The spinner is spun twice. What is the probability that the sum of the two spins will be five? Question solved general 4 months ago 9612
How would you describe the relationship between the real zeros and x-intercepts of the function y=log4(x-2) Question solved general 4 months ago 4767
A study was conducted in order to estimate ?, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be ? = 3.6 hours.Based on this information, what would be the point estimate for ??(a) 81(b) 8.5(c) 3.6(d) None of the above.We are 95% confident that the mean number of weekly hours that U.S. adults use computers at home is:(a) between 8.1 and 8.9.(b) between 7.8 and 9.2.(c) between 7.7 and 9.3.(d) between 7.5 and 9.5.(e) between 7.3 and 9.7.Which of the following will provide a more informative (i.e., narrower) confidence interval than the one in problem 3?(a) Using a sample of size 400 (instead of 81).(b) Using a sample of size 36 (instead of 81).(c) Using a different sample of size 81.(d) Using a 90% level of confidence (instead of 95%).(e) Using a 99% level of confidence (instead of 95%).(f) Both (a) and (d) are correct.(g) Both (a) and (e) are correct.How large a sample of U.S. adults is needed in order to estimate ? with a 95% confidence interval of length 1.2 hours?(a) 6(b) 12(c) 20(d) 36(e) 144 Question solved general 4 months ago 9227
CHAPTER SUMMARY647Using x skilled and y anskilled workers, a manufacturer can produce Q(x, y) = 60x^1/3y^2/3 units per day.Currently the manufacturer employs 10 skilledworkers and 40 unskilled workers and is planningto hire 1 additional skilled worker. Use calculus toestimate the corresponding change that themanufacturer should make in the level of unskilledlabor so that the total output will remain theER SUMMARYsame. Question solved general 4 months ago 4618
Finn's Mimstoon Rental Company charges an initial fee of $18 plus anadditional $31 per day to rent mimstoon's. Pocahontas's MimstoonRental Company charges an initial fee of $35 plus an additional fee of$29 per day. After how many days will the total cost charged by thecompanies be the same? Round to the nearest day. Question solved general 4 months ago 2414
Suppose that x has a binomial distribution with n = 50 and p = .6, so that μ = np = 30 and σ = np(1 − p) = 3.4641. Calculate the following probabilities using the normal approximation with the continuity correction. (Hint: 22 < x < 37 is the same as 23 ≤ x ≤ 36. Round your answers to four decimal places.) g Question solved general 4 months ago 7896
The temperature T of an object in degrees Fahrenheit after t minutes is represented by the equation T(t) = 69e−0.0174t + 79. To the nearest degree, what is the temperature of the object after one and a half hours? Question solved general 4 months ago 3512
Given sin θ = square root of 23 divided by 12 and tan θ = square root of 23 divided by 11, find cos θ. Enter the answer as a fraction in lowest terms. Question solved general 4 months ago 2948
The probability of a football team winning a match is 0.3. The probability of the same football team losing a match is 0.55. What is the probability of the same football team drawing a mathc? Question solved general 4 months ago 2563
During the first hour of operation the farm stand owner sold 15% of the apples he had. On the second hour he sold 20% of the remaining apples. On the third hour he sold 25% of the remaining apples, and so on, selling 5% more each following hour.b) If during the second hour 25.5 kg of apples were sold, how many kilograms of apples will be sold during the fourth hour of operation? Question solved general 4 months ago 5325