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3 years ago

This figure shows △XYZ . MZ is the angle bisector of ∠YZX .

Mathematics

1 answer:

frosja888 [35]3 years ago

3 0

$\frac{3.5}{x} = \frac{7}{11} \\ \\ 3.5*11 \\ 7*x \\ \\ \frac{7x}{7} = \frac{38.5}{7} \\ \\ x = 5.5$

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A plumbing company charges an initial fee of $50, plus an additional $26 per hour of service. A second company charges an initia

torisob [31]

The answer is C. You pay $128 in the third hour for both. Hope this helped

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2 years ago

Assume, for the sake of this question, that the data were collected through a well-designed, well-implemented random sampling me

amid [387]

Answer:

Since the pvalue of the test is 0.2743 > 0.1, the threshold probably was met.

Step-by-step explanation:

The widget manufacturing company had established a threshold of 60% preferring the proposed new widget to move forward with producing the new widgets.

This means that at the null hypothesis we test if the proportion is at least 60%, that is:

$H_{0}: p \geq 0.6$

And the alternate hypothesis is:

$H_{a}: p < 0.6$

The test statistic is:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

In which X is the sample mean, $\mu$ is the value tested at the null hypothesis, $\sigma$ is the standard deviation and n is the size of the sample.

0.6 is tested at the null hypothesis:

This means that:

$\mu = 0.6$

$\sigma = \sqrt{0.6*0.4}$

Three hundred thirty-eight of 575 respondents reported preferring the proposed new widget.

This means that $n = 575, X = \frac{338}{575} = 0.5878$

Value of the test-statistic:

$z = \frac{X - \mu}{\frac{\sigma}{\sqrt{n}}}$

$z = \frac{0.5878 - 0.6}{\frac{\sqrt{0.6*0.4}}{\sqrt{575}}}$

$z = -0.6$

Pvalue of the test and decision:

We want to find the probability of a proportion of 0.5878 or lower, which is the pvalue of z = -0.6.

Looking at the z-table, z = -0.6 has a pvalue of 0.2743.

Since 0.2743 > 0.1, the threshold probably was met.

3 0

3 years ago

Someone help me plzzz:((((

mash [69]

Step-by-step explanation:

OI= 3.2 cm (same as OH)

To find GI, use Pythagoras Theorem (a²+b²= c²)

6.8²+3.2²= 56.48

√56.48= 7.5 cm

hope it helps! please mark me brainliest

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3 0

2 years ago

Read 2 more answers

PLEASE HELP ME !!!!

Natalka [10]

Answer:

Step-by-step explanation:

There are no repeating values for x, for different values plugged in for y.

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3 years ago

G^2 + 4gh ; if g = -3 and h= 5

Klio2033 [76]

<h3 /><h3> ${g}^{2} + 4gh \\ { - 3}^{2} + 4( - 3 \times 5) \\ 9 + ( - 12 \times 20) \\ 9 +( - 240 ) \\ = - 231\\$ </h3>

<em>-</em><em> </em><em>BRAINLIEST</em><em> answerer</em>

7 0

3 years ago