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MATH SOLVE
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General
A large box contains 10,000 ball bearings. A random sample of 120 is chosen. The sample mean diameter is 10 mm, and the standard deviation is 0.24 mm. True or false: a. A 95% confidence interval for the mean diameter of the 120 bearings in the sample is 10 ± (1.96)(0.24)/√ 120. b. A 95% confidence interval for the mean diameter of the 10,000 bearings in the box is 10 ± (1.96)(0.24)/√120. c. A 95% confidence interval for the mean diameter of the 10,000 bearings in the box is 10 ± (1.96)(0.24)/√10,000.
General
4 months ago
Roberto is having his house painted. The job takes three days, and he pays the painter the same hourly rateevery day. The cost of the job is in the chart below.Hours workedAmount paidDay 15$300Day 24$240Day 36$360What is the painter's unit rate of change of dollars with respect to time; that is, how much is the painter paid forone hour worked?
General
4 months ago
At a candy store you could get 3 giant lollipops for $4.89. How much would it cost to buy 6 lollipops?
General
4 months ago
Write an equation in standard form that has a slip of 6 and passes through (-1,3)
General
4 months ago
suppose that the given line has a slope of -2/3 and a y-intercept of (0,5/3). which of the following points is also a solution to the line? select all apply A. (5,5/3) B. (1,1) C. (4,-1) D. (-3,7) E. (0,0)
General
4 months ago
slope = 2; (14, 33)
General
4 months ago
192 divided by 15 as a fraction of the remainder
General
4 months ago
A new car loses value at a constant rate. You purchase a new car for $21,500. After 3 years the value of the car was $14,120. What will the value of the car be after 5 years?
General
4 months ago
An animal shelter has 90 animals. Some are dogs and the rest are cats. There are 11 dogs for every four cats. How many cats are at the animal shelter? Explain your reasoning.
General
4 months ago
Julie is taking two books with her on vacation. Suppose the probability she likes the first book is 0.5, the probability she likes the second book is 0.4, and the probability she likes both books is 0.3.a. What is the probability she likes at least one of the books?b. What is the probability she likes neither of the books?
General
4 months ago
Joseph had to type an article containing 10,000 words. How many minutes did it take him? (1) Joseph and Kelly together can type a 75,000-word article in an hour and a half. (2) Joseph types twice as fast as Kelly does.
General
5 months ago
Chris is a researcher at the Centers for Disease Control and Prevention, and he is trying to understand the behavior of a newand dangerous virus. He starts his experiment with 25 viruses that grow at a rate of 75% per hour. He will check on theviruses in 12 hours. How many viruses will he find? Round your answer to the nearest whole number.
General
5 months ago
need to solve this problem in steps 5(2x+6)=-4(-5-2x)+3x
General
5 months ago
The function C(t) = 400 + 30t models the number of classrooms, C. in the town of Sirap, t years fromnow. The function D(t) = 25 + t models the number of students per classroom, D, t years from now.Let S be the number of students in Sirap's school system t years from now.2 ) Write a formula for S(t) in terms of Ct) and D(t).1 ) Write a formula of S(t) in terms of t.
General
5 months ago
How do I convert 75 feet/second to miles/hour rounding to the nearest whole number
General
5 months ago
Pls answerFind the distance between (-5, -8) and (-1, -16).Group of answer choices8.9 units9.8 units10.3 units11 unitsWhich of the following is a Pythagorean triplet?Group of answer choices(8, 15, 17)(2, 3, 5)(5, 7, 9)(6, 9, 11)
General
5 months ago
Do you length of a rectangle is five times the width. If the length and width are both increased by 2, the new area would be 85. What is the original area?
General
5 months ago
At each scooter's top speed brand a goes 2 miles per hour faster than brand b. After traveling at its top speed for 3 hours brand a scooter traveling 40.2
General
5 months ago
According to an article, there were 795,325 associate degrees awarded by U.S. community colleges in a certain academic year. A total of 485,142 of these degrees were awarded to women. (Round your answers to three decimal places.)(a) If a person who received a degree in this year was selected at random, what is the probability that the selected student will be female? (b) What is the probability that the selected student will be male?
General
5 months ago
A company determines that its marginal revenue per day is given by R' ( t ) , where R ( t ) is the total accumulated revenue, in dollars, on the tth day. The company's marginal cost per day is given by C' ( t ) , where C ( t ) is the total accumulated cost, in dollars, on the tth day. R' ( t ) = 80 e t, R ( 0 ) = 0; C' ( t ) = 80 - 0.8t, C ( 0 ) = 0 Find the total profit P ( T ) from t = 0 to t = 10 ( the first 10 days ) . P ( T ) = R ( T ) - C ( T ) = [R' ( t ) - C' ( t ) ] dt The total profit is $ . ( Round to the nearest cent as needed. ) Find the average daily profit for the first 10 days. The average daily profit is $ . ( Round to the nearest cent as needed. )
General
5 months ago
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