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Leno4ka [110]
3 years ago
12

Solve the equation: 3x-5 = 19-x

Mathematics
1 answer:
Sindrei [870]3 years ago
8 0
3x-5=19-x
3x-5-19+x=0
4x-24=0
4x=24
x=6

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Use cross products to solve the proportion:<br><br> 5/m = 15/9
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6 0
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Read 2 more answers
Got this one wrong need help
elixir [45]
Each angle on a triangle pertains to the opposite side

so let’s start by solving the equations:
6 + 4 = 10
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6 0
2 years ago
What is 9 fourths divided by 3 forth so
Alexus [3.1K]
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5 0
3 years ago
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Hello Brainly Teacher Brainly Moderators and trusted helpers!​
tatyana61 [14]

Answer:

  • P(x < 84) = 0.3085 or approximately 31%

============

<em>Hello to you from Brainly team!</em>

<h3>Given</h3>

  • Mean grade μ = 86,
  • Standard deviation σ = 4,
  • Grade limit x = 84.

<h3>To find </h3>

  • Probability of that a randomly selected grade is less than 84 or P(x < 84).

<h3>Solution</h3>

Find z-score using relevant equation:

  • z = (x - μ)/σ

Substitute values and calculate:

  • z = (84 - 86)/4 = - 0.5

Using the z-score table find the corresponding P- value.

  • P(x < 84) = 0.30854 or approximately 31%
4 0
2 years ago
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