Find the exact value of sin (13pi/8)

Airida [17]

The question GIVES us an equation:

V₀ = √(v² - 64h) .

It TELLS us that v should be 100 ft/sec and h is 150 ft.
All we have to do is plug the numbers into the equation,
and then do the arithmetic to find V₀.
There's not even any Physics to do. Only arithmetic.

V₀ = √(v² - 64h)

v = 100
h = 150

V₀ = √(100² - 64·150)

V₀ = √(10,000 - 9,600)

V₀ = √400

V₀ = 20 ft per sec .

4 0

4 years ago

How do you calculate a t-test in SPSS?

Sergeu [11.5K]

Answer:

To run an Independent Samples t Test in SPSS, click Analyze > Compare Means > Independent-Samples T Test. The Independent-Samples T Test window opens where you will specify the variables to be used in the analysis. All of the variables in your dataset appear in the list on the left side.

6 0

3 years ago

How many days did carol work at the restaurants during the 28 day period ?

Anarel [89]

$\bf \underset{\frac{1}{4}\textit{ of 28}}{\stackrel{\textit{at the Bookstore}}{\cfrac{1}{4}(28)}}\implies \cfrac{28}{4}\implies 7~\hfill \underset{\frac{1}{14}\textit{ of 28}}{\stackrel{\textit{did not work}}{\cfrac{1}{14}(28)}}\implies \cfrac{28}{14}\implies 2 \\\\\\ \stackrel{\textit{remaining days}}{28 - 7 - 2}\implies 28-9\implies \stackrel{\textit{at the Restaurant}}{19}$

6 0

3 years ago

2. Find the area of the regular polygon.

frozen [14]

Answer:

a. 80 units

b. 482.843 units²

Step-by-step explanation:

First things first, we need to solve for the side of the octagon. We can do so by using Pythagorean Theorem: a² + b² = c² where c is the hypotenuse and a and b are the other two sides.

12² + b² = 13²

144 + b² = 169

b² = 25

b = 5

Now that we know half of the side of the octagon is 5, we know that one side of the octagon is 10.

a. To find perimeter we just add every side together (or since every side is the same size, we multiply by 8)

10 × 8 = 80

b. The formula for finding the area of an octagon is 2(1 + radical 2)a² where a is the length of a side. By plugging in to a calculator we get:

2(1 + radical 2)(10)² = 482.843

3 0

3 years ago

I need help with this question please ASAP before tomorrow! Thank you :)

luda_lava [24]

23- right handed females

7 0

3 years ago

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