3 years ago

PLZ HELP ITS DUE RN BRAINIEST TO WHOEVER RIGHT!

Mathematics

2 answers:

maw [93]3 years ago

4 0

Answer:

-1, 0, 2

Step-by-step explanation:

Just graph it and see the zeros

lyudmila [28]3 years ago

3 0

Answer:

The zeros are -1, 0, and 2

Step-by-step explanation:

The zeroes of f are the points where the graph f crosses the x-axis, which occur at x = -2, x = 0, x = 2.

Have a great day :)

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If cos x=8/17, and 270° < x < 360°<br> what is cos(2x)?

svp [43]

Answer: $\bold{-\dfrac{161}{289}}$

<u>Step-by-step explanation:</u>

Given: cos x = $\dfrac{8}{17}$ , x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

8² + y² = 17²

y² = 17² - 8²

y² = 289 - 64

y² = 225

y = 15

→ sin x = $-\dfrac{15}{17}$

Use the double angle formula to find cos (2x):

$cos (2x) = cos^2 x - sin^2 x\\\\.\qquad=\bigg(\dfrac{8}{17}\bigg)^2-\bigg(-\dfrac{15}{17}\bigg)^2\\\\\\.\qquad=\dfrac{64}{289}-\dfrac{225}{289}\\\\\\.\qquad=-\dfrac{161}{289}$

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3 years ago

Read 2 more answers

Can someone help I’m confused

PtichkaEL [24]

Since the slope is -2 we know that m=-2. Now use the standard form of y=mx+b and plug in the coordinates (-8,2). We know y=2, x=-8, and m=-2. Therefore we get 2=-2(-8)+b. Now solve for b and you get -14. Therefore, the equation is y=-2x-14.
Hope this helped!

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2 years ago

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The height of a distance marker is 8213 feet. 45 of the pole is painted white and rest is painted blue. what fraction of the pol

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