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egoroff_w [7]
3 years ago
10

Hey you guys I am having a LOT of trouble.... HeLp a SiStEr OuT PLeZ

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
6 0
<h2>Explanation:</h2><h3>1.</h3>

The little square box in the corner between the vertical line and the horizontal one is a symbol indicating that angle is a right angle. It has a measure of 90°. The angles designated 1 and 2 together add up to that 90°. When angles sum to the value 90°, they are called "complementary" angles.

Since angles 1 and 2 also share a side and a vertex, they are also "adjacent" angles.

The appropriate choices are ...

  • complementary angles
  • adjacent angles

___

<h3>2.</h3>

The same lines define the sides of angles 1 and 2, and they share a vertex. However, they are not adjacent. They are ...

  • vertical angles

___

<h3>3.</h3>

The angles marked 157° and x° together add up to make a line, so they are supplementary (their total is 180°). They also share a vertex and a side, so they are adjacent. The appropriate choices are ...

  • supplementary angles
  • adjacent angles

___

<h3>4.</h3>

When two angles total 180°, they are <em>supplementary</em>, whether they have any common parts or not. Since 98° + 82° = 180°, ...

  • The angles are supplementary
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Semenov [28]
Do you need the area of the floor plan? If so here you go:

6*4 = 24, so 24 cm.
7 0
2 years ago
Add the two expressions <br> -4.2x+3 and 2.5x-6<br><br><br> please help me with this
dalvyx [7]

-1.7×-6 is the answer. Hope this helps.

6 0
3 years ago
Read 2 more answers
Nationally, patients who go to the emergency room wait an average of 7 hours to be admitted into the hospital. Do patients at ru
valina [46]
  1. For this study, we should use t-test and the null and alternative hypotheses would be given by H₀: μ = 7 and H₁: μ < 7.
  2. The test statistic is -1.941 and the p-value (0.0381) is <u>greater than</u> α = 0.01.
  3. Based on this, we should <u>fail to reject</u> the null hypothesis.
  4. Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

<h3>What is a null hypothesis?</h3>

A null hypothesis (H₀) can be defined the opposite of an alternate hypothesis (H₁) and it asserts that two (2) possibilities are the same.

<h3>How to calculate value of the test statistic?</h3>

The test statistics can be calculated by using this formula:

t=\frac{x\;-\;u}{\frac{\delta}{\sqrt{n} } }

<u>Where:</u>

  • x is the sample mean.
  • u is the mean.
  • is the standard deviation.
  • n is the number of hours.

For this study, we should use t-test and the null and alternative hypotheses would be given by:

H₀: μ = 7

H₁: μ < 7

t=\frac{6.3\;-\;7}{\frac{1.3}{\sqrt{13} } }\\\\t=\frac{-0.7}{\frac{1.3}{3.6056 } }

t = -0.7/0.3606

t = -1.941.

For the p-value, we have:

P-value = P(t < -1.9412)

P-value = 0.0381.

Therefore, the p-value (0.0381) is <u>greater than</u> α = 0.01. Based on this, we should <u>fail to reject</u> the null hypothesis.

Thus, the final conclusion is that the data suggest the population mean is not significantly lower than 7 at α = 0.01, so there is statistically insignificant evidence to conclude that the population mean waiting time to be admitted into the hospital from the emergency room for patients at rural hospitals is equal to 7 hours.

Read more on null hypothesis here: brainly.com/question/14913351

#SPJ1

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2 years ago
Can someone help me find x ? due in 2 hours?
DochEvi [55]

Answer:

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Step-by-step explanation:

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PLEASE HELP GEOMETRY Representing and Describing Transformations - Homework
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Answer:

333

Step-by-step explanation:

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