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Natali [406]
2 years ago
9

What value(s) of x make the equation x2 - 18x + 81 = 0 true?

Mathematics
2 answers:
gayaneshka [121]2 years ago
8 0
X^2 - 18x + 81 = 0
x^2 - 9x - 9x + 81 = 0
x(x - 9) - 9(x - 9) = 0
(x - 9)(x - 9) = 0
(x - 9)^2 = 0
x - 9 = 0
x = 9
ira [324]2 years ago
6 0

Answer:

the answer is 9

Step-by-step explanation:

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Please explain this to me.
Nutka1998 [239]

Answer:

  • The value of x is 12 units.

Step-by-step explanation:

<u>We know that:</u>

  • Formula: h² = a² + b²

<u>Let's solve using Pythagoras theorem.</u>

  • => 13² = 5² + x²
  • => 169 = 25 + x²
  • => 169 - 25 = x²
  • => 144 = x²
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Hence, the value of x is 12 units.

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2 years ago
rene charges $2.25 for gasoline plus $8.50 per hour for mowing lawns what is x the number of hours he has to mow lawns to earn t
Black_prince [1.1K]
2.25 + 8.50x = 50

8.50x = 50 - 2.25

8.50x = 47.75
——— ———
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x = 5.6 hours

Hope that helps :)
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3 years ago
If m 1 = 90°, what is m?
Setler79 [48]
Perpendicular



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7 0
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MrMuchimi
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Explanation:
50 1 20
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Answer:

1

Step-by-step explanation:

We have the graph of f(x).

In order to find f(0), we simply need to find the y-coordinate of the coordinate when x is 0.  

From the graph, we can see that there is a point at (0,1).

In other words, when x is 0, f(x) is 1.

Therefore:

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