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3 years ago

The model represents x2 – 9x + 14.

Mathematics

2 answers:

Arte-miy333 [17]3 years ago

7 0

Answer:

x-2

Step-by-stxep explanation:

Gemiola [76]3 years ago

6 0

Answer: (x-2)
As x^2-9x+14 factor is ( x-2) (x-7)

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One solution of x^2-64=0 is 8. what is the other solution?

ivann1987 [24]

X² - 64 = 0
(x - 8)(x + 8) = 0

x = - 8, 8

Your other solution is - 8

4 0

4 years ago

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Can y’all help me please !

Leviafan [203]

no because she turned it only 90 degrees not 180.

180 would be a mirror reflection

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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

8 0

1 year ago

2x + 8 = 2(x + 4) help pls

Fynjy0 [20]

2x +8=2x+8
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So the answer is 0

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3 years ago

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raketka [301]

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3 years ago

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