Please help me with this question!!

Mathematics

1 answer:

Pachacha [2.7K]3 years ago

6 0

Answer:

B. Negative

Step-by-step explanation:

We are given that x equals negative and y equals positive.

That means the fraction is negative multiplied by the 7y³ term, which is positive.

Negative times positive is negative, so B is our answer.

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Inessa [10]

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3 years ago

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Given u = (2, -8) and v = (8, -2), what is u times v?

jolli1 [7]

Answer:

$u\cdot v=32$

Step-by-step explanation:

Assuming $u$ and $v$ are vectors, their dot product is $u\cdot v$ where $u_1v_1 + u_2v_2$ :

$u\cdot v=u_1v_1+u_2v_2=(2)(8)+(-8)(-2)=16+16=32$

Therefore, $u\cdot v=32$

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3 years ago

Which graph is an example of a function whose parent function is y=sqrt x?

hoa [83]

See in the explanation

<h2>Explanation:</h2>

Hello! Recall that you have to post complete questions in order to get excellent and correct answers. Since you have missing graphs, I can't say what is the correct option. However, I'll try to help you about the concept of parent functions.

A parent function is the most basic function that shares the same characteristics with other complicated functions. One of the parent function in mathematics is the Square Root Function written as:

$y=f(x)=\sqrt{x}$

This parent function is shown in the First Figure below. As you can see:

The domain is the set of all real numbers greater (or equal) than zero
The range is the set of all real numbers greater (or equal) than zero

An example of a function whose parent function is $f(x)=\sqrt{x}$ is the same function translated three units to the left. In a mathematical language:

$g(x)=\sqrt{x+3}$

This graph is shown in the second figure. As you can see, these two graph share the same characteristics. The only difference is a translation performed on the second one. For the second graph, we have: