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igomit [66]
4 years ago
14

-7(y+2x)-3(y-x) please expand and then simplify the expression.

Mathematics
2 answers:
Schach [20]4 years ago
7 0

Answer:

-10y - 11x

Step-by-step explanation:

First you need to distribute -7 through the parentheses.

-7y - 14x - 3y + 3x

then you need to collect the like terms (terms with the same variable)

-10y - 11x

yan [13]4 years ago
4 0

Answer:-10y - 11x

Step-by-step explanation:

Expanding , we have

-7y - 14x -3y  + 3x

collecting the like terms , we have

- 7y - 3y - 14x + 3x

Simplifying , we have

-10y - 11x

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The diameter of a circle has endpoints of (2, 5) and (-4, 13). What is the correct equation of this circle? Pls explain and I wi
Bezzdna [24]

Answer:

  • Option 4

Step-by-step explanation:

Midpoint of the diameter is the center.

<u>Use midpoint formula to determine the coordinates:</u>

  • x = (2 - 4)/2 = -1
  • y = (5 + 13)/2 = 9

<u>Find the radius using the midpoint and one of the endpoints and the distance formula:</u>

  • r = \sqrt{(-1 - 2)^2 + (9 - 5)^2}  = \sqrt{9+16} = \sqrt{25} = 5

<u>Use the equation of the circle:</u>

  • (x - (-1))² + (y - 9)² = 5²
  • (x + 1)² + (y - 9)² = 25

Correct choice is 4

4 0
3 years ago
Select all the functions that show an inverse variation...
trapecia [35]

Function y=3/x, y= 2/x+4, and xy=-3 shows an inverse variation option (b), (e), and (f) are correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

As we know, when x is not equal to zero and k is a nonzero real number constant, the equation of the form xy = k describes the nonlinear function known as inverse variation.

a) y=6x

The above function is a linear function

b) y=3/x

or

xy = 3

The above function shows an inverse variation.

c) y=1/3x

or

y = (1/3)x

The above function is a linear function

d) y= -.07x

The above function is a linear function

e) y= 2/x+4

or

y = (2+4x)/x

xy = 2 + 4x

The above function shows an inverse variation.

f) xy=-3

The above function shows an inverse variation.

Thus, function y=3/x, y= 2/x+4, and xy=-3 shows an inverse variation option (b), (e), and (f) are correct.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

5 0
2 years ago
What could a person collecting data for a survey do to avoid age bias in the results?
Rudik [331]

Answer:

The online survey  has large biases concerning representativeness. Regarding the behavioural characteristics of consumers, the face-to-face data delivers the best results, followed by the telephone interviews and finally the online survey.

Face-to-face surveys still deliver the most representative results. Telephone surveys may provide a good alternative, but we would advise use of a larger sample. The online  survey needs to be corrected, one should relinquish representativeness.


4 0
3 years ago
Math<br><br> Need help for cookie
Xelga [282]

Answer:

\frac{2}{3} *\frac{3}{5}

Step-by-step explanation:

I've no idea what you mean by "need help for cookie" but there's you answer,... Chow

3 0
3 years ago
PLEASE HELP! NEED IT NOW!
insens350 [35]

Answer:

ok

Step-by-step explanation: 3cm i believe

3 0
3 years ago
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