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4 years ago

The triangles below are congruent which if the following statements must be true ?

Mathematics

1 answer:

ira [324]4 years ago

5 0

Answer:

<em>The correct answer is BC = DF. Hope this helps! Have a good day!</em>

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Solve the equation. <br> n+75=105

MariettaO [177]

Answer:

n = 30....................

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3 years ago

Read 2 more answers

Can somebody tell me the answers to this ??? pleaseeee !!!

kolbaska11 [484]

90^2-54^2=5184
root 5184=72
pr=72

3 0

3 years ago

Need help ASAP please! 60 points! -Does anyone have an idea as to how the function should be drawn? I think that there should be

Nesterboy [21]

P(x) to P(x+2), you need to graph the same but shift 2 units to the left.

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Max = 4 ,coordinate points (-5, 0) and (5,0)

6 0

3 years ago

Adjoint of [1 0 2 -1] is

aliina [53]

The adjoint of the matrix $\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$ is $\left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

<h3>How to determine the adjoint?</h3>

The matrix is given as:

$\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$

For a matrix A be represented as:

$A = \left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

The adjoint is:

$Adj = \left[\begin{array}{cc}d&-b\\-c&a\end{array}\right]$

Using the above format, we have:

$Adj = \left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

Hence, the adjoint of the matrix $\left[\begin{array}{cc}1&0\\2&-1\end{array}\right]$ is $\left[\begin{array}{cc}-1&0\\-2&1\end{array}\right]$

Read more about matrix at:

brainly.com/question/11989522

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7 0

2 years ago

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved th

trasher [3.6K]

Answer:

The null and alternative hypotheses are:

$H_{0}:\sigma_{men} = \sigma_{women}$

$H_{a}:\sigma_{men} \neq \sigma_{women}$

Under the null hypothesis, the test statistic is:

$F=\frac{\sigma^{2}_{men}}{\sigma^{2}_{women}}$

$=\frac{19^{2}}{9^{2}}$

$=\frac{361}{81}$

$=4.46$

Therefore, the test-statistic is $F=4.46$

Now the F critical value at 0.02 significance level for df1 = 10- 1 =9 and df2 = 16 - 1 =15 is:

$F_{critical} = 3.303$

Since F statistic is greater than the F critical value, we therefore, reject the null hypothesis and conclude that there is sufficient evidence to support the claim that there is a difference in the variation in the listening times for men and women.

7 0

3 years ago