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Alika [10]
3 years ago
6

Find the number that is 9 greater than twice the opposite of itself

Mathematics
1 answer:
harina [27]3 years ago
4 0
N= the number

n = 9 + 2(-n)

combine like terms:

-9= -3n

divide both sides by -3

n=3
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Which mathematical property is demonstrated 40•(25•74) = (40•25)•74
Sindrei [870]
The mathematical property that allows 40 * (25 * 74) = (40 * 25) * 74 would be the Associative Property of Addition and Multiplication. This property means that no matter how the values of an expression are grouped together (or "associating" with each other), the end result will be the same, as long as the symbols are all either multiplication or addition symbols.
Hope that helped =)
6 0
3 years ago
Need understanding how to do this
kkurt [141]

Answer:

  • 102 + (3x +2) = 180 . . . . equation to solve
  • x = 25 1/3 . . . . . . . . . . . . value of x

Step-by-step explanation:

It can be helpful to draw a diagram of a parallelogram ABCD and identify the angles in the problem statement. You will find they are adjacent angles.

Adjacent angles in a parallelogram are supplementary, so the sum of the given angle measures will be 180°.

  102 + (3x +2) = 180 . . . equation used to solve for x

  3x = 76 . . . . . . . . . . . . . subtract 104

  x = 76/3 . . . . . . . . . . . . divide by 3

  x = 25 1/3 . . . the value of x

7 0
3 years ago
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Answer:

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The answer to your question is alphabetical order
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What is the y-intercept of the line described by the equation below? Y= 4x-9
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This equation is put in slope-intercept form.  That means it is in Y = mx+b.

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Ordered Pair: (0,-9)

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