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Luba_88 [7]
3 years ago
11

What is the area surface of the pyramid please do not do any files or links just say the answer and do not guess

Mathematics
1 answer:
poizon [28]3 years ago
7 0

Answer:

448

Step-by-step explanation:

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Solve this system of linear equations. Separate
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good question

Step-by-step explanation:

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3 years ago
In a grid of an auditorium, the vertices of a section of seats are A (40, 20), B (80, 20), C (100, 70),
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2 years ago
What is the sum of 12-5¡ and -3+4¡
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3 years ago
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PLEASE HELP!!This is joshs solution for the equation x^2-6x-7=0: x^2-6x-7=0
iren [92.7K]

Answer:

  no. see below

Step-by-step explanation:

This much of Josh's working is correct:

  x^2-6x=7

  x^2-6x+9=7+9

  (x-3)^2=16

At this point Josh apparently overlooked the fact that he needed to take the square root of both sides of the equation. Had he done that, he would have ...

  x -3 = ±4

  x = 3+4 . . . or . . . 3 -4

  x = 7 or -1

_____

Josh reported values of x that would match ...

  x -3 = ±16

He <em>violated the equal sign</em> by taking the square root on the left, and multiplying by ±1 on the right. Doing different operations on the two sides of the equation will mean the value of x is changed to something other than what you're looking for.

4 0
3 years ago
Which shows 60^2 − 40^2 being evaluated using the difference of squares method?
DerKrebs [107]
D. The answer has to be 2,000, eliminating A and C. B doesn't even use the original equation, as well as incorrectly solving the method, so D is the correct answer, even if you don't understand the principles.
7 0
3 years ago
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