Solve by using dimensional analysis: "The lethal dose for caffeine is ~150 – 200 mg/kg of body mass. How much caffeine would be lethal for a 120 lbs. person? Assuming 1 cup of strong coffee contains 150 mg of caffeine, how many cups of coffee would that be?”

73 cups of coffee are needed for lethal dose.

Step-by-step explanation:

A pound equals 0.453 kilograms. Then, the weight of the person is 54.431 kilograms. The total quantity of caffeine needed for such weight is determined by this simple rule of three:

And the number of cups of coffee is:

73 cups of coffee are needed for lethal dose.

15%

step-by-step explanation:

use the table and count the number of guesses that has two correct answers.

the following are two correct answers

10010, 01100, 11000

a total of 3 numbers having 2 correct guesses out of 20 questions.

probability of getting 2 correct guesses = the number of questions getting 2 correct answers / total number of questions.

= 3/20

to convert it into percent multiply by 100, we get

= 3/20 * 100

= 15%

the answer is 15%

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