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Fudgin [204]
3 years ago
9

A certain standardized test measures students’ knowledge in English and math. The English and math scores for 10 randomly select

ed students were recorded and analyzed. The results are shown in the computer output.
Which of the following represents the standard deviation of the residuals?


1.223

34.55

78.712

124.13

I think it's (B), 34.55

Mathematics
1 answer:
creativ13 [48]3 years ago
7 0

Answer:

(B) 34.55

S is the standard deviance for residuals.

ED2021

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4−6n=60−2n<br> what is n?
Nadusha1986 [10]

Answer:

n = -14

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

Step-by-step explanation:

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

4 - 6n = 60 - 2n

<u>Step 2: Solve for </u><em><u>n</u></em>

  1. Add 6n to both sides:                              4 = 60 + 4n
  2. Subtract 60 on both sides:                      -56 = 4n
  3. Divide both sides by 4:                            -14 = n
  4. Rewrite:                                                     n = -14

<u>Step 3: Check</u>

<em>Plug in n into the original equation to verify it is a solution.</em>

  1. Substitute in <em>n</em>:                    4 - 6(-14) = 60 - 2(-14)
  2. Multiply:                               4 + 84 = 60 + 28
  3. Add:                                     88 = 88

Here we see that 88 does indeed equal 88.

∴ n = -14 is a solution of the equation.

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