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
defon
3 years ago
13

Approximately how long does it take a sample of francium-223 to decay by 50%?

Mathematics
1 answer:
valentina_108 [34]3 years ago
6 0
B. 100 minutes correct me if i’m wrong
You might be interested in
Instructions: Find the measure of the missing angles in the kite.<br> Please help!<br> :)
taurus [48]

Answer

1)90°. 2)51°. 3)39°.

Step-by-step explanation:

1) it is straight so it is 90°

2)51° because the kite is symmetrical so it should be the same as the other side

3)90+51=141

180-141=39° so it is 39°

Hope this helps :) good luck

8 0
3 years ago
Is -3r + 137 equivalent to 6r - r + 8 (15 - r) + 23 - 6
lorasvet [3.4K]

Answer:

yes it is equal.

8 0
3 years ago
A photo of a painting has a scale of 3 inches = 2 feet. If the photo is 7.5 inches long, how many feet long is the painting?
elixir [45]
The painting is 60 inches long
3 0
3 years ago
10 – (2y – 6) – y<br> Simplify
weeeeeb [17]

16-3y because you distribute through the parenthesis frist and then you solve for your answer

6 0
4 years ago
What is the proportional relationship of 15 mL to 3.75 L
Lana71 [14]

Answer:


Step-by-step explanation:


4 0
4 years ago
Other questions:
  • Find the value of x.<br> (x + 30)
    9·1 answer
  • What is the simplified answer of 5 -5/2 x 5 9/2
    9·1 answer
  • Find equation of the line below!! ):
    15·1 answer
  • What is the final amount if 490 is increased by 15% followed by a further 14% increase?
    13·1 answer
  • 1/2z+6=3/2(z+6) need the answer asap
    5·2 answers
  • Một đề thi trắc nghiệm có 10 câu, mỗi câu có 4 phương án trả lời và chỉ có một đáp án đúng. Một sinh viên trả lời một cách ngẫu
    7·1 answer
  • Colin invests £1200 into his bank account. He
    11·1 answer
  • construct a ​99% confidence interval of the population proportion using the given information. x=240 n=300
    15·1 answer
  • The formula used to convert degrees Celsius to degrees Fahrenheit is
    14·1 answer
  • 10 points, helpppp please​!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!