2 years ago

If x = 14, which equation is true?

Mathematics

1 answer:

lozanna [386]2 years ago

8 0

Answer:

The answer should be C.

2(14 - 3) = 22

2(11) = 22

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jok3333 [9.3K]

Equation is
x-6=8
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x=14
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3 years ago

At a sale this week, a desk is being sold for $561. This is 68% of the original price. What is the original price?

elixir [45]

Answer:

825

Step-by-step explanation:

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1 year 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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8 months ago

How to round 106.327 to nearest hundredths explain

scoray [572]

Answer:

106.33

Step-by-step explanation:

after decimal you have .3 tenths 2 hundredths 7 thousandths

to round to the nearest hundredths look at thousandths 7 becasuse is greater then 5 then you round up

106.327 is rounded to 106.33

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2 years ago

Read 2 more answers

Find the student’s error in solving the following inequality.

Volgvan

31 < -5x + 6
-6 -6
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3 years ago

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