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3 years ago

What is the answer for this question 4x × (-2)

Mathematics

2 answers:

anyanavicka [17]3 years ago

8 0

I think the answer is -8x

kozerog [31]3 years ago

7 0

-8x if I read the problem correctly

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Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and

ser-zykov [4K]

For this case we have the following equation:
$7x - 10y = 3
$
From here, we must substitute ordered pairs of the form:
(x, y)
If the ordered pair satisfies the equation, then it belongs to the line.
We have then:

For (8, 5):
We substitute the following values:
$x = 8

y = 5

7 (8) - 10 (5) = 3

56 - 50 = 3

6 = 3$
We observe that the equation is not satisfied and therefore, this point does not belong to the line.
Since one of the points does not belong to the line, then the equation is not a good model.

Answer:
It is not a good model. One of the points does not belong to the line.

4 0

3 years ago

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Consider the series 4 + 12 + 36 ... Find the sum of the first 9 terms.

jeyben [28]

Answer:

39364

Step-by-step explanation:

You can simplify the equation to make 4(1+3+9...) The nth term is therefore $3^{n-1}$ so u can substitute that into the equation so 4( $3^{n-1}+ 3^{n} + 3^{n+1}$ ..). This would simplify to 4( $3^0 +3+3^2$ + $3^3+3^4+3^5+3^6+3^7+3^8$ ). By simplifying this, you can make it so 4( $2^2+6^2+18^2+42^2+81^2$ ) = 4(4+36+324+2916+6561) =39364

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2 years ago

F(x) = x^2 is transformed to n(x) = 2/3 x^2

andre [41]

Step-by-step explanation:

3 0

3 years ago

Solve the inequality and graph the solution on the line provided.<br> 3 + 2x > 5

ElenaW [278]

Answer:

x>1

Step-by-step explanation:

In order to do this, we can take the inequality:

3+2x>5

now there are constants on both sides meaning we can combine them like the following:

3+2x>5

-3 -3

------------

2x>2

Now we can simplify

2x/2>2/2

therefore, the answer is x>1

In order to graph this on a line you would need to put in a circle which is not filled in because x isn't <u>equal to and greater than</u> 1 so we put in a blank circle and since x is always going to be greater than 1, we would put a line that keeps going on.

You would put this line to the right of 1

o----------->

1 2 3 4 5 6

that is how the line would look like

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2 years ago

X + 16 = 9z<br> Help please

diamong [38]

Answer:x=9z + 16

z= x/9 + 16/9

Step-by-step explanation: dont know if i solve for x or z so i did both subtract 16 from both sides for x

Isolate the variable by dividing each side by factors that don't contain the variable. for z let me know if u need help

3 0

3 years ago

Read 2 more answers

What is the answer for this question 4x × (-2)​

What is the answer for this question 4x × (-2)