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antoniya [11.8K]
3 years ago
9

Solve for x, x^2-3x-5=0

Mathematics
1 answer:
Sophie [7]3 years ago
7 0

Okay so for this one, we have to isolate our X.Lets start by moving the negative 5 on the other side of the equal sign. Remember to not mix a number that is with an X with a normal number (in this case it would be the -3x and the -5). So in putting our -5 on the other sign it becomes positive. Here’s what we have: x^2-3x=5. x^2 is the same thing as 2x.So now you have to minus 3x off of your 2x. This gives us -1x, but can just be put as -x. So now we have -x=5. You’re answer could either be 5 or -5 if you decided to divide it by -1 seeing as your -x is technically -1.

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Expand to write an equivalent expression: -1/4(-8x+12y)
dalvyx [7]

Answer:

 

8x -12

Step-by-step explanation:

Use the distributive property. 16 outside wishes to go inside and multiply each term; you get 16x/2 which is 8x minus ¾ of 16 which is 12.

 

3 0
3 years ago
Read 2 more answers
Tell whether each graph is a function and justify your answer. Which graph is not a good representation of a​ real-world situati
mina [271]

Using the function concept, it is found that:

  • Graph B is a function because each value of x corresponds to exactly one y-value.

In a function, <u>one value of the input can be related to only one value of the output</u>.

  • In a graph, it means that for each value of x(horizontal axis), there can be only one respective value of y(vertical axis).

In this problem, at Graph A, when x = 5, for example a vertical line crosses the function 3 times, hence there are 3 respective values of y for x = 5, and the same is valid for other values of x, hence it is not a function.

At Graph B, <u>for each value of x, there is only one value of y</u>, hence it is a function.

Hence:

Graph B is a function because each value of x corresponds to exactly one y-value.

To learn more about the function concept, you can take a look at brainly.com/question/12463448

5 0
2 years ago
If f(x) = (-x)3, what is f(-2)?
Ilia_Sergeevich [38]

Answer: f(-2) should be 6

Step-by-step explanation:

6 0
3 years ago
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Evaluate 4p+q/p when p= -2 and q= -3 <br><br>a) -11/2<br> b) 9/2 <br>c) -9/2<br> d) 11/2​
Korolek [52]

Answer:

-11/2

Step-by-step explanation:

4 0
3 years ago
When drawn in standard position, in which quadrant does the terminal side of the angle −240° lie?
valina [46]

Answer:

Option (2)

Step-by-step explanation:

All angles are positive when measured counterclockwise from the x-axis.

Terminal side of 240° degrees when measures counterclockwise will lie in the 3rd quadrant.

But the angle is -240°.

That means angle is being measured clockwise from the x-axis.

Therefore, terminal side of the of the angle will be in the 2nd quadrant.

Option (2) will be the correct option.

3 0
2 years ago
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