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3 years ago

PLEASE HELP! 15 POINTS!

Mathematics

2 answers:

Colt1911 [192]3 years ago

6 0

B is the correct one

Alex Ar [27]3 years ago

4 0

For every x value, there should be only one y value. Or, for every input there is only one output.

A - Incorrect - there are two 2's for the x values and each of them has a different y value

B - Correct - all of the x values are different and all of the y values are different

C - Incorrect - there are two 11's for the x values and each of them has a different y value

D - Incorrect - there are two 3's for the x values and each of them has a different y value

Hope this helps! :)

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Choose one of the factors of x15 − 64. (2 points)

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We have been given the function $x^{15}-64$

Convert this expression in difference of cubes form.

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Now, in order to find the factors, we can apply the difference of cubes form, which is given by

$x^3-y^3=(x-y)(x^2+xy-y^2)$

On applying this formula, we get

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Out of the given option, A is the correct option.

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Step-by-step explanation:

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Question 3. Find the distance between P(4,5) and the line with equation 8x + 5y = 20

earnstyle [38]

Answer:

Step-by-step explanation:

8x+5y = 20

y = (-8/5)x + 4

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line of slope ⅝ that passes through P(4,5):

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y = ⅝x + 2.5

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timama [110]

Answer:

Option C is correct.

Step-by-step explanation:

$\theta=\frac{5\pi }{6}$

We need to find reference angle and signs of sinФ, cosФ and tanФ

We know that $\theta=\frac{5\pi }{6}radians$ is equal to 150°

and 150° is in 2nd quadrant.

So, Ф is in 2nd quadrant.

And In 2nd quadrant sine is positive, while cos and tan are negative

The reference angle Ф' is found by: π - Ф

=> Ф = 5π/6

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