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3 years ago

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X² - 4

1 answer:

emmainna [20.7K]3 years ago

8 0

Yes so he shows this by also doing what is called the flow. After this it is complete

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Sin(3pi over 4) = _____

OlgaM077 [116]

If you're using the app, try seeing this answer through your browser: brainly.com/question/2790456

______________

$\mathsf{sin\!\left(\dfrac{3\pi}{4}\right)}\\\\\\ =\mathsf{sin\!\left(\dfrac{3\cdot 180^\circ}{4}\right)}\\\\\\ =\mathsf{sin(135^\circ)}\\\\ =\mathsf{sin(180^\circ-135^\circ)}$

$=\mathsf{sin(45^\circ)}\\\\ =\mathsf{\dfrac{\sqrt{2}}{2}}\quad\longleftarrow\quad\textsf{this is the answer.}$

I hope this helps.=)

Tags: <em>sine sin common angles trig trigonometry </em>

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3 years ago

During a sale at the mal, all items were marked down 40% off of the original price. Lily purchased a purse that was originall $2

NNADVOKAT [17]

Answer:

$132

Step-by-step explanation:

40% off means it is actually 60% of the regular price.

Thus, you will multiply the original (220) by .6 (this means 60 percent)

and you will get 220*.6=132

3 0

4 years ago

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18. Which is more, five-eighths of a dollar or four-ninths of a dollar?

wel

Answer:

five-eighths of a dollar is more than four-ninths of a dollar

Step-by-step explanation:

If you convert the fractions into decimals:

5/8 = 0.625

4/9 = 0.44444444444...

0.625 is closer to 1 than 0.44444444444...

Hope that helped!

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2 years ago

Jim read 24 pages in 40 minutes on Tuesday and 18 pages in 24 minutes on Wednesday. Are the ratios of pages read to minutes on T

IRISSAK [1]

Answer: Not proportional

Step-by-step explanation:

Ratio of pages read by Jim on Tuesday to minutes = $\frac{24}{40}=\frac{3}{5}=3:5$

Ratio of pages read by Jim on Wednesday to minutes = $\frac{18}{24}=\frac{3}{4}=3:4$

But $\frac{3}{5}\neq \frac{3}{4}$

Therefore, the ratios of pages read to minutes on Tuesday and Wednesday are not proportional.

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3 years ago

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Describe the steps you would take to draw a graph

Fynjy0 [20]

Answer:

Step-by-step explanation:

Step 1: Identify the variables. ...

Step 2: Determine the variable range. ...

Step 3: Determine the scale of the graph. ...

Step 4: Number and label each axis and title the graph.

Step 5: Determine the data points and plot on the graph. ...

Step 6: Draw the graph.

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3 years ago

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