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Kryger [21]
2 years ago
15

What is the sum of (2x+4)+(-3x+9)

Mathematics
2 answers:
Levart [38]2 years ago
7 0

Answer:

-x + 13

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>

  • Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define expression</u>

(2x + 4) + (-3x + 9)

<u>Step 2: Simplify</u>

  1. Combine like terms (x):                    -x + 4 + 9
  2. Combine like terms (Z):                    -x + 13
Anon25 [30]2 years ago
4 0
-x + 13 lmk if it’s right
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The manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .
Misha Larkins [42]

Answer:

0.1507 or 15.07%.

Step-by-step explanation:

We have been given that the manufacturing of a ball bearing is normally distributed with a mean diameter of 22 millimeters and a standard deviation of .016 millimeters. To be acceptable the diameter needs to be between 21.97 and 22.03 millimeters.

First of all, we will find z-scores for data points using z-score formula.

z=\frac{x-\mu}{\sigma}, where,

z = z-score,

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z=\frac{21.97-22}{0.016}

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