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
Anon25 [30]
3 years ago
13

A radioactive substance decays exponentially. A scientist begins with 100 milligrams of a radioactive substance. After 27 hours,

50 mg of the substance remains. How many milligrams will remain after 36 hours?
Mathematics
1 answer:
never [62]3 years ago
7 0
33.3 because 27/50=36/x and x=66.67 and thats how much as decayed after 36 hours but you want what is left so subtract from 100 and get 33.3
You might be interested in
What is the slope of the line?<br><br> -5/2 -2/5 2/5 5/2
fredd [130]
(0,-1)(2,4)
slope = (4 + 1)/(2-0) = 5/2

answer is <span>5/2 (last choice)</span>
3 0
4 years ago
Read 2 more answers
Which explanation best describes how to solve this problem?
julia-pushkina [17]
Id say d is best way to go 
8 0
3 years ago
A side of the triangle below has been extended to form an exterior angle of 145°. Find the value of x.
Anna007 [38]

Answer:

Step-by-step explanation:

145 = x+90

x=55

8 0
3 years ago
X/2 -15= -7 in verbal expression
Vsevolod [243]
X/2-15=-7
x-30=-14
x=-14+30
x=16
4 0
3 years ago
Solve for x.<br><br> 6x2−2=13
makkiz [27]

Answer:

x = ±sqrt(5/2)

Step-by-step explanation:

6x^2−2=13

Add 2 to each side

6x^2−2+2=13+2

6x^2 = 15

Divide each side by 6

6/6x^2 = 15/6

x^2 = 5/2

Take the square root of each side

sqrt(x^2) = ±sqrt(5/2)

x = ±sqrt(5/2)

5 0
3 years ago
Read 2 more answers
Other questions:
  • 2 is 1/10 of what number
    14·2 answers
  • Help on number 670!!
    8·1 answer
  • Pls help fast this is khan academy
    14·2 answers
  • PLZZZZZZZZZ HELP!!!!!!!!!!
    12·1 answer
  • Need help on these easy A B C D questions
    14·2 answers
  • Solve the multi-step word problems. Identify any hidden questions. (1.) The teacher collected $15 from 6 students last week for
    12·2 answers
  • It takes mr. simon 3 hours to travel 125 miles. How long will it take him to travel 200 miles travelling at the same rate
    14·1 answer
  • A game at the fair involves a wheel with seven sectors. Two of the sectors are red, two of the sectors are purple, two of the se
    7·1 answer
  • EASY MATH CHALLENGE NEED EXPLANATION 20 POINTS The board game Kings crown has, red, green, and gold gems for the players to earn
    9·1 answer
  • Solve the right triangle.<br> Round your answers to the nearest tenth.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!