3 years ago

Angles of a triangle

Mathematics

1 answer:

xeze [42]3 years ago

8 0

Answer:

120 being vertically opposite angle of 120 and are equal

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nika2105 [10]

An acute angle is infact 90 degrees, therefore your answer is correct.

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Lisa [10]

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Find the slope . (5,8) and (-4,6) . can someone help plz

nadya68 [22]

2/9 is the answer

Step-by-step explanation:

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11Alexandr11 [23.1K]

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Step-by-step explanation:

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2 years ago

g Z-Test for Population Means Calculate z-statistic of a population mean. Keith sampled 10 private universities in Colorado and

scoray [572]

Answer: 2.46

Step-by-step explanation:

Formula for x-score is given by :-

$Z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

, where $\overline{x}$ = Sample mean , $\mu$ = population mean, $\sigma$ = population standard deviation, n= sample size.

As per given , n=10

$\mu$ = $29,056

$\sigma$ = $3,339

$\overline{x}$ = $31,650

Then,

$z=\dfrac{ 31650-29056}{\dfrac{3339}{\sqrt{10}}}\\\\=\dfrac{2594}{\dfrac{3339}{3.16227766017}}\\\\=\dfrac{2594}{1055.88451073}=2.45670807142\approx 2.46$

Hence, the z-score = 2.46

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3 years ago