1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WITCHER [35]
3 years ago
8

You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How many milligrams

of caffeine will be in your system after 8 hours? Round to two decimal places? Can someone show me how to work this problem out?
Mathematics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer:

 43.16 mg

Step-by-step explanation:

After each hour, the amount remaining is 100% - 12% = 0.88 times the amount present at the beginning of the hour. Then after 8 hours, the amount remaining will be the initial amount multiplied by 0.88 eight times, or ...

  (120 mg)·(0.88^8) ≈ 43.1561 mg ≈ 43.16 mg

_____

Of course, an exponent is used to signify repeated multiplication. You can actually do the multiplication if you like, but most scientific and graphing calculators handle exponentiation easily.

You might be interested in
HELPP!!! BRAINIEST IF CORRECT!!
Tatiana [17]

Answer:

I think the answer is 60 or 70 or 65

8 0
2 years ago
Read 2 more answers
Write the expression 23/5 as a radical.
Andrej [43]
5/23 is the correct answer

8 0
3 years ago
Read 2 more answers
A triangle has sides with lengths of 4 inches, 14 inches, and 17 inches. Is it a right triangle?
irga5000 [103]
Yes it is because 2 sides would be the legs while 1 side is the hyptonuese so in this case 4 is a leg and 14 and 17 is the hyptonuese
5 0
2 years ago
Olive Garden is only 10 square yards in the watermelon plants she wants to grow require two and a half square yards each how man
aleksandr82 [10.1K]
4 because 2.5 x 4 = 10 :)
5 0
3 years ago
Read 2 more answers
What is the perimeter of a parallelogram, if its area is 24 cm^2 and and the distances between the point of intersection of the
Stells [14]
Answer is 20 cm i guess

4 0
3 years ago
Other questions:
  • Solve the equation by using the basic properties of logarithms. log(2x)=3
    10·2 answers
  • In our class Kieron is coloring a pattern where half of the squares on her paper are being colored blue, of the blue squares 1/3
    12·1 answer
  • I need help with this question please<br> ASAP!!!!!!!!!
    14·1 answer
  • Ginnie plans to paint a wall. She measures its height and width. She finds that she needs enough paint to cover 8 square meters.
    14·1 answer
  • Express the ratio in lowest form:<br>1.5 kg: 350 g​
    7·1 answer
  • The straight line 3x -2y = 5 will pass through which of the following points
    14·1 answer
  • True or false: When moving to a bigger unit we divide or move our decimal to the left.
    15·1 answer
  • What is 8/5 divided by 3/5 help would be appreciated :))
    10·2 answers
  • Two opposite angles of a parallelogram are always
    15·1 answer
  • 5) IF...<br> 481 = 2<br> 708 = 3<br> 475 = 0<br> 849 = 3<br> 208 = ?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!