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kotykmax [81]
3 years ago
7

jimmy hS three times as many comic books as charles. Charles has 2/3 as many books as bob. Bob has 27 books. how many comic book

s does jim have
Mathematics
1 answer:
S_A_V [24]3 years ago
7 0
27/3=9
9*3=27
Jimmy has 27 comic books.
You might be interested in
Radium-228 has a half-life of 5.75 years. What is the decay rate for radium-228?
artcher [175]

Decay rate for Radium-228 is 0.01205

Step-by-step explanation:

The half life of radium-228 is 5.75 years. We need to find the decay rate for radium.

The formula used is:

ln\frac{N_o}{N_t}=-\lambda t

Where N₀ = amount of radioactive particles at time = 0

N_t = amount of radioactive particles are time (t)

λ = rate of decay constant

t = time

We are given half life so, \frac{N_o}{N_t}=0.5

t= 5.75 years

We need to find λ

Putting values in formula and solving:

ln\frac{N_o}{N_t}=-\lambda t

ln(0.5)=-\lambda *5.75\\-\lambda=\frac{ln(0.5)}{5.75}\\-\lambda=\frac{-0.69}{5.75}\\-\lambda=-0.1205\\\lambda=0.1205

So, Decay rate for Radium-228 is 0.01205.

Keywords: Decay Rate

Learn more about Decay Rate at:

  • brainly.com/question/4361464
  • brainly.com/question/8224301

#learnwithBrainly

3 0
3 years ago
In Bobby's grade, 679 students are enrolled in health and 21 students are not. What percentage of the students in the school are
skad [1K]

97.07%

Step-by-step explanation:

total number of students is

696+21=717

696/717×100=97.07

answer is 97.07%

3 0
3 years ago
Solve the following system of equations:
Vinil7 [7]
The answer is (12, -1)
Work in pic:

8 0
3 years ago
7 ones 2 tenths+4 tenths= how many tenths
pychu [463]

Answer:

76

Step-by-step explanation:

7+0.2+0.4=7.6

7.6 times 10 is 76

7 0
4 years ago
Read 2 more answers
4/9 as decimal show your work
Fed [463]
    4/9 

= 0.44444444

= Rounded to 0.44

The correct answer is 0.44
4 0
4 years ago
Read 2 more answers
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