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3 years ago

4. Which relation is also a function?

Mathematics

2 answers:

NeTakaya3 years ago

4 0

The answer is B. In a function the x value should not be repeated. The only set of points that does not have the x repeating is B.

ELEN [110]3 years ago

3 0

B because each input has one output

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(5x^5) - (80x^3)<br> factoring

elena55 [62]

Answer:

Factoring the term $(5x^5) - (80x^3)$ we get $\mathbf{5x^3(x-4)(x+4)}$

Step-by-step explanation:

We need to factor the term $(5x^5) - (80x^3)$

First we can see that $5x^3$ is common in both terms

So, taking $5x^3$ common:

$(5x^5) - (80x^3)\\=5x^3(x^2-16)$

We can write $x^2-16$ as $(x)^2-(4)^2$

$=5x^3((x)^2-(4)^2)$

Now we can solve $(x)^2-(4)^2$ using the formula: $a^2-b^2=(a+b)(a-b)$

We can write:

$=5x^3((x)^2-(4)^2)\\=5x^3(x-4)(x+4)$

So, factoring the term $(5x^5) - (80x^3)$ we get $\mathbf{5x^3(x-4)(x+4)}$

4 0

3 years ago

Given that f(x)=x^2 -19 and g(x)=17 -x, find (f-g)(5), if it exists.

pashok25 [27]

x^2 - 19 - (17 - x).

<em><u>Distribute -1 to each term of g(x).</u></em>

x^2 - 19 - 17 + x.

<em><u>Replace x with 5.</u></em>

5^2 - 18 - 17 + 5

25 - 18 - 17 + 4

<em><u>Simplify.</u></em>

-6 is your answer.

4 0

3 years ago

Please help! I will mark as brainliest. <3

Andrew [12]

<h2>Solving Inequalities</h2><h3>Answer:</h3>

$(-\infty,-8]$

<h3>Step-by-step explanation:</h3>

$-2x +7 \geqslant 23 \\ -2x +7 -7 \geqslant 23 -7 \\ -2x \geqslant 16 \\ \frac{-2x}{-2} \leqslant \frac{16}{-2} \\ x \leqslant -8$

The values of $x$ has to be less than or equal to $8$ so $x \in (-\infty,-8]$

3 0

3 years ago

(-1)x^{2} 299 cual es el resultado y los pasos?

GuDViN [60]

Answer: 299x^2 I think I hope we help you

7 0

3 years ago

mike and bill sell cars for jangles auto. Over the past year they sold 640 cars. assuming mike sells 3 times as amny as bill, ho

Oksana_A [137]

Let Mike sold M cars and Bill sold B cars.
Now both sold 640 cars in total, means M + B = 640,
also Mike sold 3 times as many as Bill, means M = 3*B. So our equations became,
M + B = 640, & M = 3*B, put value of M in terms of B.
3*B + B = 640, 4*B = 640,
B = 640/4, B = 160, as M = 3*B, M = 3*160 = 480.
So Mike sold 480 cars & Bill sold 160 cars.

5 0

3 years ago