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2 years ago

Find all zeros of x^4+x

Mathematics

1 answer:

Yuri [45]2 years ago

4 0

Answer:

-1 and 0

Step-by-step explanation:

X ^4+x = 0;

x*(x^3+1)=0;

x*[(x^3-x)+(x+1)]=0;

x*[x(x-1)(x+1)+(x+1)]=0;

x*(x+1)(x^2-x+1)=0;

Since x^2-x+1=0 has no intersection with the X-axis, there is no x value such that y=0

x=0 or -1

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asambeis [7]

Answer:

t = 1.51

Step-by-step explanation:

Exponential Model

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The model can be expressed as

$M=M_oe^{kt}$

In this case, Mo is the initial mass of the radioactive substance and k is a constant which value is positive if the mass is growing or negative if the mass is decaying.

The value of k is not precisely given in the question, we are assuming $k=-0.2$

The model is now

$M=M_oe^{-0.2t}$

We are required to compute the time it takes the mass to reach one-half of its initial value:

$\displaystyle \frac{M_o}{2}=M_oe^{-0.2t}$

Simplifying

$\displaystyle \frac{1}{2}=e^{-0.2t}$

Taking logarithms

$\displaystyle ln\frac{1}{2}=ln(e^{-0.2t})=-0.2t$

Solving for t

$\displaystyle t=-\frac{ln\frac{1}{2}}{0.2}=1.51$

6 0

3 years ago

Circle as A diameter of 10 cm what is the circumference use 3.14 For £ and do not round your answer be sure to include the corre

astra-53 [7]

Answer:31.4cm

Step-by-step explanation:

Circumference=2×π×(diameter/2)

Circumference=2×3.14×10/2

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3 years ago

HELP if you can pls pls pls ty

Serhud [2]

Answer: I think its $176.40

Step-by-step explanation:

The area would be 21

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Then it would cost $176.40 (50.4 x $3.50)

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3 years ago

Read 2 more answers

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shusha [124]

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4 years ago

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notka56 [123]

Equidistant

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Best Regards,

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3 years ago