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
pentagon [3]
2 years ago
10

Helpppppppppppppppppppp

Mathematics
1 answer:
Ivan2 years ago
7 0
I believe the answer is B and E
You might be interested in
Tom practiced piano 1 and 1/3 hours on Monday. If he spent half as much time practicing on Tuesday, how long did he practice on
PtichkaEL [24]

Answer: 2/3 hours

Step-by-step explanation: 1 1/3 will equal 4/3 as you have a whole number equaling 3/1 so then you divide by two and get 2/3

3 0
2 years ago
Number 10 please I don't understand it
wel
Whats the value what ever it is its divided by three
8 0
3 years ago
4x+5y=13<br> 8x+7y=11 <br> find solution of system of equation
Pavel [41]

Point Form:

(−3, 5)

Equation Form:

x = −3,y = 5

3 0
2 years ago
Carbon-14 is a radioactive isotope that has a half-life of 5,730 years. Approximately how many years will it take for carbon-14
PilotLPTM [1.2K]

Answer:

<em>Carbon-14 will take 19,035 years to decay to 10 percent.</em>

Step-by-step explanation:

<u>Exponential Decay Function</u>

A radioactive half-life refers to the amount of time it takes for half of the original isotope to decay.

An exponential decay can be described by the following formula:

N(t)=N_{0}e^{-\lambda t}

Where:

No  = The quantity of the substance that will decay.

N(t) = The quantity that still remains and has not yet decayed after a time t

\lambda     = The decay constant.

One important parameter related to radioactive decay is the half-life:

\displaystyle t_{1/2}=\frac {\ln(2)}{\lambda }

If we know the value of the half-life, we can calculate the decay constant:

\displaystyle \lambda=\frac {\ln(2)}{ t_{1/2}}

Carbon-14 has a half-life of 5,730 years, thus:

\displaystyle \lambda=\frac {\ln(2)}{ 5,730}

\lambda=0.00012097

The equation of the remaining quantity of Carbon-14 is:

N(t)=N_{0}e^{-0.00012097\cdot t}

We need to calculate the time required for the original amout to reach 10%, thus N(t)=0.10No

0.10N_o=N_{0}e^{-0.00012097\cdot t}

Simplifying:

0.10=e^{-0.00012097\cdot t}

Taking logarithms:

ln 0.10=-0.00012097\cdot t

Solving for t:

\displaystyle t=\frac{log 0.10}{-0.00012097}

t\approx 19,035\ years

Carbon-14 will take 19,035 years to decay to 10 percent.

6 0
2 years ago
Read 2 more answers
A school requires students wear uniforms. They can choose from the following options. How many total choices does a student have
Svet_ta [14]

Answer:

The answer is 16


Step-by-step explanation:


5 0
2 years ago
Other questions:
  • PLEASE HELP ! I WILL REWARD BRAINLIEST !!
    5·1 answer
  • Jericho is a botanist and is researching about a particular species of plant. He found that the number of plants in his testing
    13·1 answer
  • URGENT!! please help me )):​
    11·1 answer
  • A quiz consists of 10 true or false questions. To pass the quiz a student must answer at least eight questions correctly.
    10·1 answer
  • Which could not be the number of tennis balls coach kunal has?
    6·1 answer
  • I need help solving this problem pls!!!
    11·1 answer
  • PLS HURRY Find the slope of the line that passes through these two points: (-8, 3) and (-14, -9) 1/2 -1/2 -2 2 3. Find the slope
    10·1 answer
  • Index laws for zeros. Can anyone help me?
    12·1 answer
  • Paula has 4 bananas. She wants to divide each of them into 1/6 sections. How many 1/6's are there in 4 bananas?
    12·1 answer
  • Which Doesn't Belong?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!