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Sever21 [200]
3 years ago
14

HELP❕❗

Mathematics
1 answer:
ella [17]3 years ago
4 0

Option B

\frac{a^2b^7c^2}{a^2c^2} = b^7

<em><u>Solution:</u></em>

Given that, we have to simplify the given expression

Given expression is:

\frac{a^2b^7c^2}{a^2c^2}

We can simplify the expression by cancelling the common terms in numerator and denominator

Take the common terms out in given expression

\frac{a^2b^7c^2}{a^2c^2} = \frac{a^2c^2(b^7)}{a^2c^2}

Cancel the common terms in numerator and denominator

\frac{a^2b^7c^2}{a^2c^2} = \frac{a^2c^2(b^7)}{a^2c^2} = b^7

<em><u>Thus the simplified form of given expression:</u></em>

\frac{a^2b^7c^2}{a^2c^2}=b^7

Thus option B is correct

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A major credit card company is investigating whether the distribution of the number of credit cards used by its customers has ch
Mumz [18]

Answer:

C) If the null hypothesis were true, there is a 2 percent chance of obtaining a chi-square value of at least 7.82.

Step-by-step explanation:

The value of the chi-square test statistic was 7.82 and the p- value is 0.02. This means that if the null hypothesis were true there is a 2 percent chance of obtaining a chi square value of at least 7.82

The p- value is defined as obtaining the test statistic under H0 as extreme as observed.

When the p- value is less than 0.05 in the chi square goodness fit test it means that the null hypothesis is rejected.

There fore option C is the best answer.

A)There is a 2 percent chance that the company's claim is correct.

B) There is a 2 percent chance of obtaining a chi-square value of at least 7.82.

C) If the null hypothesis were true, there is a 2 percent chance of obtaining a chi-square value of at least 7.82.

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E)  If the null hypothesis were true, there is a 2 percent chance of obtaining a chi-square value of 7.82.

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3 years ago
The ranger of the function x2+2x-8is allá
allsm [11]

Answer:

\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}

Step-by-step explanation:

As the function is

x^{2} +2x-8

As we know that domain is the set of input values for which the function is defined.

Therefore,

\mathrm{Domain\:of\:}\:x^2+2x-8\::\quad \begin{bmatrix}\mathrm{Solution:}\:&\:-\infty \:

And range is defined as:

The set of the dependent variable for which the function is defined.

As

\mathrm{For\:a\:parabola}\:ax^2+bx+c\:\mathrm{with\:Vertex}\:\left(x_v,\:y_v\right)

\mathrm{If}\:a

\mathrm{If}\:a>0\:\mathrm{the\:range\:is}\:f\left(x\right)\ge \:y_v

a=1,\:\mathrm{Vertex}\:\left(x_v,\:y_v\right)=\left(-1,\:-9\right)

f\left(x\right)\ge \:-9

Therefore,

\mathrm{Range\:of\:}x^2+2x-8:\quad \begin{bmatrix}\mathrm{Solution:}\:&\:f\left(x\right)\ge \:-9\:\\ \:\mathrm{Interval\:Notation:}&\:[-9,\:\infty \:)\end{bmatrix}

The graph is also attached below.

Keywords: graph, domain, range

Learn more about domain and range from brainly.com/question/13856645

#learnwithBrainly

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