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creativ13 [48]
2 years ago
15

Element X is a radioactive isotope such that every 28 years, its mass decreases by

Mathematics
1 answer:
Alex_Xolod [135]2 years ago
5 0

Answer:

21

Step-by-step explanation:

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5/6 is equivalent to a percent that is larger than 100%. <br><br> True or False<br><br> 13 pts.
omeli [17]

I think it's false.... 5/6 is 83.33% as a percent so I don't think it's true.

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3 years ago
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ssume that in the year 2000 there are four different forms of psychotherapy available for curing phobias. an experimenter arrang
Liono4ka [1.6K]

We will compare pairwise treatment with the help of t-statistic to find the best treatment.The t-statistic, which is used in statistics, measures how far a parameter's estimated value deviates from its hypothesized value relative to its standard error.We need to check if the treatments are effective in curing phobia.

First, we must determine whether there is a relationship between the type of treatment used and the final result (cure or not cure). We may examine this using the Chi-square test of association.In the second phase, we must determine if all therapies are the same or different if the alternative hypothesis—that is, whether there exists any kind of link between therapy and cure—is accepted.

We must perform a One-way ANOVA for the treatments in this case, assuming that all treatments are equal. If the null hypothesis is rejected in this instance, then the treatments differ. then, we go to step three.We will compare pairwise treatment with the help of t-statistic to find the best treatment.

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5 0
1 year ago
Round 0.02851 to the nearest thousandth.851
Lyrx [107]

Answer:

.009

Step-by-step explanation:

8 0
3 years ago
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Simplify this polynomial:<br>3x2 - x + 2 - 5x2 + 8x - 5​
Lemur [1.5K]

Answer:

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Step-by-step explanation:

3 0
3 years ago
I really need help with this. Can anyone help me please?
I am Lyosha [343]

Answer:

f(x)=(x-3)(x^2+4x+8)

Step-by-step explanation:

A polynomial function is given by the form:

f(x)=a(x-p)(x-q)...

Where a is the leading coefficient, and <em>p</em> and <em>q</em> are the roots (more can be added if necessary).

Our zeros are 3 and (-2 + 2i).

And our leading coefficient <em>a </em>= 1.

Furthermore, by the Complex Root Theorem, if (-2 + 2i) is a zero, then (-2 - 2i) must also be a zero.

So, by substitution, we acquire:

f(x)=1(x-(3))(x-(-2+2i))(x-(-2-2i))

Simplify:

f(x)=(x-3)(x+2-2i)(x+2+2i)

Expand the second and third factors:

\begin{aligned} &=(x+2-2i)x+(x+2-2i)(2)+(x+2-2i)(2i)\\&= (x^2+2x-2ix)+(2x+4-4i)+(2ix+4i-4i^2)\\&=(x^2)+(2x+2x)+(-2ix+2ix)+(-4i+4i)+(4-4i^2)\\&=x^2+4x+(4+4)\\&=x^2+4x+8    \end{aligned}

Therefore, our polynomial function of least degree and the given zeros will be:

f(x)=(x-3)(x^2+4x+8)

6 0
3 years ago
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