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2 years ago

9

EASY POINTS!!

2 answers:

zepelin [54]2 years ago

8 0

Answer: True

Step-by-step explanation:

It passes the vertical line test, no two points are on the same x value

hammer [34]2 years ago

3 0

A. True

Explanation:
To prove if a graph is a function, you would need to to the vertical line test or horizontal line test.

This graph that is shown passes the vertical line test.

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In the diagram below, assume that all points are given in rectangular coordinates. Determine the polar coordinates for each poin

Korolek [52]

Step-by-step explanation:

We have cartisean points. We are trying to find polar points.

We can find r by applying the pythagorean theorem to the x value and y values.

$r {}^{2} = {x}^{2} + {y}^{2}$

And to find theta, notice how a right triangle is created if we draw the base(the x value) and the height(y value). We also just found our r( hypotenuse) so ignore that. We know the opposite side and the adjacent side originally. so we can use the tangent function.

$\tan(x) = \frac{y}{x}$

Remeber since we are trying to find the angle measure, use inverse tan function

$\tan {}^{ - 1} ( \frac{y}{x} ) =$

Answers For 2,5

${2}^{2} + {5}^{2} = \sqrt{29} = 5.4$

So r=sqr root of 29

$\tan {}^{ - 1} ( \frac{5}{2} ) = 68$

So the answer is (sqr root of 29,68).

For -3,3

${ -3 }^{2} + {3}^{2} = \sqrt{18} = 3 \sqrt{2}$

$\tan {}^{ - 1} ( \frac{3}{ - 3} ) = - 45$

Use the identity

$\tan(x) = \tan(x + \pi)$

So that means

$\tan(x) = 135$

So our points are

(3 times sqr root of 2, 135)

For 5,-3.5

${5}^{2} + {3.5}^{2} = \sqrt{37.25}$

$\tan {}^{ - 1} ( \frac{ - 3.5}{ - 5} ) = 35$

So our points are (sqr root of 37.25, 35)

For (0,-5.4)

${0}^{2} + { - 5.4}^{2} = \sqrt{} 29.16 = 5.4$

So r=5.4

$\tan {}^{ - 1} (0) = undefined$

So our points are (5.4, undefined)

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3 years ago

Maria's math test had 25 questions. She got 84% correct. How many problems did she get wrong?

Art [367]

She got 4 problems incorrect

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3 years ago

7th grade math help me please :)

Vanyuwa [196]

Step-by-step explanation:

6^4=1296.

so the answer is 1296..................

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The track of a roller coaster is 1.265 miles long. The ride lasts for 2.3 minutes. What is the average speed of the roller coast

mylen [45]

Answer:

0.7173 miles per hour

Step-by-step explanation:

divide 1.265 by 2.3

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0.48- Use a calculator if you need it. Use your multiples if needed. Hava a good day!

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