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Akimi4 [234]
2 years ago
15

The test scores for the exam in statistics class have a mean of 78 points and standard deviation of 9 points. A student is rando

mly selected. Assuming the scores are normally distributed find the probability that the score is more than 95. write statement!
Mathematics
1 answer:
frutty [35]2 years ago
3 0

Answer: the answer is 809

Step-by-step explanation:

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Simplify completely*******​
Elodia [21]

Answer:

\displaystyle \frac{x - 12}{4}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Terms/Coefficients
  • Factoring

Step-by-step explanation:

<u>Step 1: Define</u>

\displaystyle \frac{2x - 24}{8}

<u>Step 2: Simplify</u>

  1. [Fraction - Numerator] Factor:                                                                       \displaystyle \frac{2(x - 12)}{8}
  2. [Fraction] Reduce:                                                                                         \displaystyle \frac{x - 12}{4}
8 0
2 years ago
Read 2 more answers
EXPAND it please and explain <br> (9r-s/7)(9r+s/7)
Mars2501 [29]

Answer:

2. 2

81r - s/49

Step-by-step explanation: I don’t know how to explain it but yeah

( I’m probably wrong so if I am I’m sorry)

4 0
3 years ago
Find X using the image above
Andrej [43]

hope it helps you friend....!!

:)

Please give Brainlist if it helps...

3 0
3 years ago
Complete the square to solve<br> LaTeX: 0=-x^2+4x-5<br> Also written as<br> 0= -x^2+4x-5
Feliz [49]
X=2+-(plus or minus)i
7 0
3 years ago
The length of a rectangle exceeds the width by 7 cm. If the area
Artyom0805 [142]

Answer:

Length = 12cm

Step-by-step explanation:

The dimensions of the recatngle is:

- width → x

and

- length → x+7

The area of a rectangle follows the formula: length*width

Meaning: x * (x + 7) = 60

Expand that: x^2 + 7x = 60

Rearragne the equation and factorise it

(x-5)(x+12) = 0

The width cannot be a negative value, so the answer must be 5.

Remember that x was the width and the length is the width add the 7.

So the length is 12 cm.

8 0
2 years ago
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