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
7nadin3 [17]
2 years ago
5

A patient ingests 100 milligrams of a certain drug which dissolves away at a constant rate of 20% per hour. How long will it tak

e before there are only ten milligrams left?
Mathematics
2 answers:
creativ13 [48]2 years ago
6 0

Answer:

Answer:

The correct answer is 15.3 hours

Step-by-step explanation:

See the attached image below to understand why this is correct.

Strike441 [17]2 years ago
4 0

100×20%=20mg is dissolved in one hour

20mg will be dissolved away which mean it will take 4 hours for 80mg to dissolve way

since it takes 20mg 1hour it will take 10mg half and hour or 30min to dissolve away which gives us a total of 4.5 hrs to dissolve 90mg away and leave us with 10mg

You might be interested in
What is the value of x when y = 16? y = 0.25x + 11
cestrela7 [59]

The answer to this would have to be the number 15 my good sir

7 0
3 years ago
Read 2 more answers
Hey pls help worth 30 points
GrogVix [38]

Step 1: Find the slope:

    m = \dfrac{y_2-y_1}{x_2-x_1} = \dfrac{10-6}{6-5} = \dfrac{4}{1} = 4

Step 2: Set up your equation y-y_1=m(x-x_1) using one of the points.

    Using (5,6) we have y-6 = 4(x-5).

    Using (6,10) we have y-10 = 4(x-6)

Both of those equations would be correct.

5 0
3 years ago
Read 2 more answers
PLS HELPPPP ! I need itttt
klemol [59]

Answer:

x = 10

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
The California Tiger Salamander is an endangered species, which decreases at the rate of 4.6% per year in a habitat that current
stellarik [79]

Answer:

Population after 4 years = 49 (nearest unit)

Population after 5 years  = 47 (nearest unit)

Step-by-step explanation:

Yearly decrease = 4.6%

Decrease factor (what's left) = (100-4.6)% = 0.954

Current population, P = 60

population after n years = P(0.954)^n  (to the nearest unit)

Population after 4 years = 60(0.954)^4 = 49.7 = 49 (nearest unit)

Population after 5 years  = 60(0.954)^5 = 47.4 = 47 (nearest unit)

5 0
2 years ago
Read 2 more answers
Find the solution to the system 4x−7y=−12 −4x+3y=12
Nataly [62]

Answer:

(x, y) = ( -51/4 , -9)

Step-by-step explanation:

if u want me to show the work lmk

3 0
3 years ago
Other questions:
  • I dont understand this can someone help it urgent ...............
    7·1 answer
  • (PLZ NEED HELP) The doubling time of a bacterial population is 10 minutes. After 80 minutes, the bacterial population was 80000.
    6·1 answer
  • I have no clue on how to solve this
    5·2 answers
  • Which expression is equivalent to 3n + 2(1 - 4n)
    10·1 answer
  • Whats the domain of the range:<br> {(-4, -1), (-2, 1), (0, 1), (2, 3), (4,0)}
    8·1 answer
  • The shortest distance from the center of a circle to a line tha is tangent to a circle is
    13·1 answer
  • 109 10
    15·1 answer
  • X - 5 (x-1) = x - (2x - 3)
    7·2 answers
  • A pizza with a diameter of 8 inches costs $10 and a pizza
    13·1 answer
  • 9. The expression f(2) = 3 is equal to _______ A. Find the value of the function when x = 2 B. (3, 2) C. f(3) = 2 D. (2, 3)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!