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The number of bacteria in a certain population increases according to a continuous exponential growth model, with a growth rate parameter of 8.3%How many hours does it take for the size of the sample to double?Note: This is a continuous exponential growth model.Do not round any intermediate computations, and round your answer to the nearest hundredth.
General
4 months ago
Determine the two z-scores that separate the middle 87.4% of the distribution from the area in the tails of the standard normal distribution.
General
4 months ago
Ella completed the division problem below What is Ellen’s error? She included a 0 in the quotient, which does not belong. She multiplied the dividend by 100 instead of 10. She should have multiplied both numbers by 100. She did not subtract correctly in one of the steps.
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4 months ago
Last month, Margo bought a tree that grows 2.5 cm each day. It was 5 cm when she bought it and now it 65 cm tall.Write an equation to determine the number of days (d) Margo has owned the plant.Find the number of days Margo has owned the plant.
General
4 months ago
Select the correct answer.The vertex of a parabola is at the point (3.1), and its focus is at (3.5), what function does the graph represent?A. f(x) = 1/16(x - 3)² - 1B. f(x) = 1/4(x + 3)² - 1C. f(x) = 1/4(x - 3)² - 1D. f(x) = 1/16(x - 3)² + 1
General
4 months ago
Express f(x) in the form a(x-h)^2+k for f(x)= 2x^2-20x+54
General
4 months ago
Write an exponential function in the form y = ab* that goes through points (0,12)and (2,768).
General
4 months ago
Diabetes:Advandia is a drug used to treat diabetes, but it may cause an increase in heart attacks among a population already susceptible. A large study found that out of 1,456 diabetics who were treated with Avandia, 27 of them had a heart attack during the study period. This was compared with 41 heart attacks among a group of 2,895 participants who were given other treatments for their diabetes. The researchers want to determine if there is evidence to suggest that there is a significant increase in the proportion of people who suffer heart attacks when using Avandia compared to other treatments.a)Are these proportions from matched-pairs data?b)What is the result of the appropriate hypothesis test, using ? = 0.05 level of significance? (Note: list out each step in your hypothesis testing procedure and show all of your work.)Step 1:Step 2:Step 3: Step 4:Step 5:
General
4 months ago
At Litchfield College of Nursing, 81% of incoming freshmen nursing students are female and 19% are male. Recent records indicate that 70% of the entering female students will graduate with a BSN degree, while 80% of the male students will obtain a BSN degree. If an incoming freshman nursing student is selected at random, find the following probabilities. (Enter your answers to three decimal places.) (a) P(student will graduate | student is female) (b) P(student will graduate and student is female) (c) P(student will graduate | student is male) (d) P(student will graduate and student is male) (e) P(student will graduate). Note that those who will graduate are either males who will graduate or females who will graduate. (f) The events described the phrases "will graduate and is female" and "will graduate, given female" seem to be describing the same students. Why are the probabilities P(will graduate and is female) and P(will graduate | female) different
General
4 months ago
A veterinary researcher takes an SRS of 60 horses presenting with colic whose average age is 12 years. The average age of all horses seen at the veterinary clinic was determined to be 10 years. The researcher also determined that the standard deviation of horses coming to the veterinary clinic is 8 years. The probability that a sample mean is 12 or larger for a sample from the horse population is:
General
4 months ago
at an airport it costs $7 to park for up to one hour and $5 per hour for each additional hour. let x represent the number of hours parked. write the function that modles the cost, C(x), of the parking x hours, where x is an integer greater then 1.
General
4 months ago
Two parallel lines are _____ coplanar.neversometimesalwaysTwo lines that lie in parallel planes are _____ parallel.sometimesalwaysnever Please explain the answers, I want to understand this better.
General
4 months ago
Andrew earns an allowance of $14 the first week, $17 the next week, $20 the following week, and so on.How much will Andrew earn over the course of 10 weeks?
General
4 months ago
which of the following statements are true? Select all that apply.a) The image of the point (-3,-5) under a reflection across the x-axis is (3,-5).b) The image of the point (1,9) under a reflection across the y-axis is (1,-9).c) The image of the point (8,7) under a reflection across the line y=-x is (-7,-8).d) The image of the point (-6,-6) under a reflection across the y=x is (-6,-6).e) The image of the point (2,4) under a reflection across the y-axis followed by a reflection across y=xis (-2,-2).f) Point K (3,-1)is reflected across the x-axis to creak point K'.The line x+3y=6 passes through point K'.
General
4 months ago
PLEASE HELP!! I do not understand this. And can you explain it for me when I use it again?1. A rectangular prism is defined as the drawing shows. Note B at (0, 5, 0) and F (0, 0, 4). The prism is reflected over the xz-plane. The reflected image is then translated 2 units back, 3 units left, and 1 unit up. a.) Show the results of your calculations for points A, B, C and D from the reflection. b.) Show the results of your calculations for points A, B, C and D from the translation.Here is the image- https://us-static.z-dn.net/files/d78/3d779b3d254fe859e35a544af4257d2f.png
General
4 months ago
A bicyclist was traveling from the village to the railroad station with a speed of 15 mph and he was coming back to the village with a speed of 10 mph. Find the distance from the village to the railroad station, if it’s known that it took 1 more hour for the bicyclist to get back to the village.
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4 months ago
This list shows the age at which 43 U.S. Presidents began their terms. 57 61 50 54 54 54 56 54 61 54 48 49 42 51 61 57 68 65 50 51 60 52 57 51 52 47 56 62 69 58 49 56 55 55 43 64 57 64 46 55 51 55 46 Before you can make a frequency table, you need to decide how to set up the age intervals. What is the BEST way to group these ages into six intervals?
General
4 months ago
if you vertically compress the absolute value parent function f(x)=|x| by a factor of 3 what is the equation of the new function
General
4 months ago
In the diagram ,M//N . Identify all of the angles that are congruent to 2
General
4 months ago
Evaluate the expression. r = <9, -7, -1>, v = <2, 2, -2>, w = <-5, -2, 6> v ⋅ wA) <-18, 14, -2>B) -26C) 1D) <-10, -4, -12>
General
4 months ago
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