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3 years ago

Wavelength and Frequency

Mathematics

2 answers:

avanturin [10]3 years ago

8 0

Answer:

D - 2 to 1

Step-by-step explanation:

I think the answer is 2 ratio 1 because of the wavelength of the blue note of 1/2 less than the wavelength of the red note.

makvit [3.9K]3 years ago

5 0

Answer:

D. 2 to 1

Step-by-step explanation:

I calculated it logically

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12 stars / 30 balloons = x / 120 balloons

OlgaM077 [116]

Answer: 48 stard

Step-by-step explanation:

12 stars = 30 balloons

? = 120 balloons

Solve

120/30 x 12 = 48

7 0

3 years ago

Read 2 more answers

Dean Halverson recently read that full-time college students study 20 hours each week. She decides to do a study at her universi

romanna [79]

Answer: The p-value is 0.154.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis :

$H_0:\mu=20$

Alternate hypothesis :

$H_1:\mu$

Population mean = 20 hours

Sample mean = 18.5 hours

Sample standard deviation = 4.3 hours

Sample size n = 35

So, test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{18.5-20}{\dfrac{4.3}{\sqrt{35}}}\\\\z=\dfrac{-1.5}{0.726}\\\\z=-2.066$

So, the p value would be 0.154.

Hence, the p-value is 0.154.

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3 years ago

Write a paragraph proof.

worty [1.4K]

It is given that line segment BC is congruent to line segment EC and that line segment AC is congruent to DC. Because of the vertical angles theorem, angle BCA is equal to angle DCE. Therefore, triangles CBA AND DEC are congruent by SAS. Using CPCTC, BA is equal to ED.

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3 years ago

I need geometry help...

Amiraneli [1.4K]

Sin(h) = 8/17
Hope this helps

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3 years ago

What are these answers

melisa1 [442]

Answer:

answers

Step-by-step explanation:

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3 years ago