A cup of coffee contains 140 mg of caffeine. If caffeine leaves the body at 10% per hour, how long will it

Mathematics

1 answer:

ivann1987 [24]3 years ago

6 0

Answer: 5 hours

Step-by-step explanation:

If 10% of 140 is 14. And if 14 mg of caffeine is leaving per hour then it would take 10 hours to completely leave from ones body, but for half of it to leave it would take 5.

You might be interested in

THIS is due in a hour Justin gave the waiter a $2.25 tip at the restaurant. If his meal cost $12.50, what percent tip did he giv

polet [3.4K]

2.25/12.50 = 0.18. then turn 0.18 into a percentage by doing 0.18 x 100 = 18%. Therefore, he gave an 18% tip.

3 0

3 years ago

Read 2 more answers

BRAINLIEST BRAINLIEST!!! EASY MATH! Do with explanation!!

Anuta_ua [19.1K]

Answer:

Answer is given below with explanations.,

Step-by-step explanation:

$1)formula \: for \: linear \: equation \: is \: \\ ax + by + c = 0 \\ 2) \: solution \: of \: the \: equation \: y = 9x - 3 \\ (2,15) \: is \: the \: solution \: \\ on \: substitutuing \: the \: points \\ 15 = 9(2) - 3 \\ 15 = 18 - 3 \\ 15 = 15 \\ hence \: proved\\ 3) \: given \:( k,7) \: is \: a \: solution\\ \: of \: y = - 4x + 1 \\ on \: substitutuing \: the \: points \\ 7 = - 4k + 1 \\ 4k = - 7 + 1 \\ 4k = - 6 \\ k = \frac{ - 6}{4} \\ k = \frac{ - 2}{3}$