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d1i1m1o1n [39]
2 years ago
9

Hello Brainly Teacher Brainly Moderators and trusted helpers!​

Mathematics
1 answer:
tatyana61 [14]2 years ago
4 0

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%
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3 0
3 years ago
I solved this answer already and I got 43, but I don’t know if it’s correct so
faltersainse [42]

Answer:

= 43

Step-by-step explanation:

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Solve the brackets first

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8 0
3 years ago
Explain how you could use 6×9 = 54 to find 54÷9?
erastova [34]
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5 0
3 years ago
Read 2 more answers
What is the problem 6y+2(3y-5)= -34
lidiya [134]

Answer:

y=−2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

6y+2(3y−5)=−34

6y+(2)(3y)+(2)(−5)=−34(Distribute)

6y+6y+−10=−34

(6y+6y)+(−10)=−34(Combine Like Terms)

12y+−10=−34

12y−10=−34

Step 2: Add 10 to both sides.

12y−10+10=−34+10

12y=−24

Step 3: Divide both sides by 12.

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8 0
3 years ago
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JulijaS [17]

Answer:

The missing value is x=5y/8

5 0
3 years ago
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