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3 years ago

Insert two sets of grouping symbols to make the equation true. 102 + 4 • 6 + 3 − 27 ÷ 9 − 6 = 127

Mathematics

1 answer:

allsm [11]3 years ago

5 0

Idk i literally get one away for everything i do

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What is the percentage of "85% of 78.00?" (Also needs calculation)

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-21.85.999

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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

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1 year ago

Mike plans to cover a box with fabric.

Anuta_ua [19.1K]

208 is the answer good luck

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3 years ago

What is the value of 4p-2 when p=8

3241004551 [841]

Answer: Hence, the value of expression is 30 when p = 8.

Step-by-step explanation:

Since we have given that

$4p-2$

and we have p = 8.

So, we substitute the value of p in the above expression.

so, it becomes,

$4(8)-2\\\\4\times 8-2\\\\=32-2\\\\=30$

Hence, the value of expression is 30 when p = 8.

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3 years ago

Independent Practice

mariarad [96]

Answer:

B. (1, 0)

Step-by-step explanation:

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3 years ago

Read 2 more answers