All categories

3 years ago

Please help and explain how you got the answer

Mathematics

1 answer:

nordsb [41]3 years ago

7 0

I say 8 because i guessed and im a really good guesser

You might be interested in

Can i get some help with #5 and below thankyou

trasher [3.6K]

Answer:

Step-by-step explanation:

what the other guy said!

6 0

2 years ago

What is 120 degrees in radians?

RideAnS [48]

Answer:

$\frac 23 \pi$

Step-by-step explanation:

120 degrees is one third of the whole circle, or $\frac 13 2\pi$

3 0

3 years ago

Read 2 more answers

Write a formula for the nth term of the arithmetic sequence

den301095 [7]

Answer:

Step-by-step explanation:

$a_{1}=1\\d=-3-1=-4\\a_{n}=a_{1}+(n-1)d\\a_{n}=1+(n-1)(-4)\\a_{n}=1-4n+4\\a_{n}=5-4n$

8 0

3 years ago

Situation:A researcher in North America discoversa fossile that contains 65% of its originalamount of C-14..-ktN=NoeNo inital am

zheka24 [161]

SOLUTION

We have been given the equation of the decay as

$\begin{gathered} N=N_0e^{-kt} \\ where\text{ } \\ N_0=initial\text{ amount of C-14 at time t} \\ N=amount\text{ of C-14 at time t = 65\% of N}_0=0.65N_0 \\ k=0.0001 \\ t=time\text{ in years = ?} \end{gathered}$

So we are looking for the time

Plugging the values into the equation, we have

$\begin{gathered} N=N_0e^{-kt} \\ 0.65N_0=N_0e^{-0.0001t} \\ e^{-0.0001t}=\frac{0.65N_0}{N_0} \\ e^{-0.0001t}=0.65 \end{gathered}$

Taking Ln of both sides, we have

$\begin{gathered} ln(e^{-0.000t})=ln(0.65) \\ -0.0001t=ln(0.65) \\ t=\frac{ln(0.65)}{-0.0001} \\ t=4307.82916 \end{gathered}$

Hence the answer is 4308 to the nearest year

8 0

6 months ago

How to simplify the expression (2^2)÷2^10

dimulka [17.4K]

Simplify means solve and to solve we first need to do 2 to the 2nd power which is two * 2 that equal 4 than do 2 to the 10th power that equal 1024 and than we can just do

4 divided by 1024 = 0.0390625

6 0

2 years ago