Recent activity by Bob Brown

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4.9 (Confusion matrix) In a classification problem with K classes, the cost matrix is K×K matrix C=[c ij ] in which c ij is the cost when one example belongs to class i but is predicted to be in class

answered Nov 28, 2024

1 answer 10.2k views

What is the total area of all three gardens if each garden is in the shape of a square with a 3-foot by 3-foot section removed from each of the four corners, and one garden is shown with a larger square

asked Jul 26, 2024

1 answer 139k views

In the vibrating strings experiment, what is the wave speed in m/s for a string with = 0.00539 grams/cm if the mass suspended from the end of the string is m = 55.8 grams? assume g=9.80 m/s²

answered Jul 14, 2024

1 answer 150k views

How much pure alcohol must a pharmacist add to 10^3 of a 10% alchohol solution to strengthen it to a 70% solution? (ASAP)

answered Jul 7, 2024

1 answer 140k views

Essay prompt: In a five-paragraph literary analysis essay, explain how each author develops the common theme of American Identity. Compare and contrast how the authors develop this theme by referencing

answered Jun 14, 2024

1 answer 158k views

The date the auditor grants the client permission to use the audit report in connection with the financial statements is the: 1) Last day of significant field work. 2) Report cutoff date. 3) Report release

answered Jun 8, 2024

1 answer 187k views

What is an amputation at the proximal level of the shaft of the humerus? a. Transhumeral amputation b. Supracondylar amputation c. Shoulder disarticulation d. Forequarter amputation

asked Mar 26, 2024

1 answer 179k views

2. Why were European nations in intense competition during the Age of Exploration? a) To promote religious unity

asked Mar 12, 2024

1 answer 19.6k views

For his weather project, Ronny will record whether or not it rains each day during a one-month period. Ronny plans to display the results of his study on a bar graph. Which is the most appropriate label

answered Mar 3, 2024

1 answer 30.9k views

Can someone please help me find the value of X?

answered Aug 26, 2023

1 answer 189k views

What does the heart do? How do its structures help it pump and distribute blood?

asked Aug 15, 2023

2 answers 232k views

A water wave has a frequency of 0.9 Hz and a wavelength of 3 meters. What is the period of the wave in seconds?

answered Jul 22, 2023

1 answer 68.6k views

A hot air balloon travles 18 miles in 3 hours. at this rate, how many miles will the hot air balloon travel in 3/4 hour

answered Jul 12, 2023

2 answers 40.8k views

What number balances the equations?!

asked Jul 7, 2023

1 answer 160k views

Prove or disprove that the product of a nonzero rational number and an irrational number is irrational.

answered Jun 8, 2023

1 answer 81.0k views

A study with London taxi cab drivers found that the hippocampus of their brains had greater volume, which was presumed to mean more neural connections, as a result of learning and driving new routes around

answered May 23, 2023

1 answer 69.4k views

Can anyone help me with this I’m stuck and this is pretty difficult.

answered May 10, 2023

1 answer 76.6k views

Q4. A chemical is soluble in water but insoluble in benzene. As a consequence, benzene may be used to determine its density. The density of benzene is 0.879/g/L. Calculate the density of the sample. (a)

answered May 7, 2023

1 answer 166k views

Which quote from the Bill of Rights prevents the national government from taking power for itself from the states and the people? A) "The powers not delegated to the United States by the Constitution,

answered Nov 6, 2022

2 answers 28.3k views

Who is going to win? Godzilla or King Kong for the movie that is coming out soon?

answered Oct 19, 2022

2 answers 146k views

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