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MrRissso [65]
3 years ago
6

I don’t understand this and I need help

Mathematics
2 answers:
Bas_tet [7]3 years ago
6 0

Answer:

Step-by-step explanation:

x -12 = y -40

x -7 = y -20

x 0 = y 8

x 5 = y 28

x 14 = y 64

ruslelena [56]3 years ago
4 0

Answer:

sub in the x value for x, so start with y=4(-12)+8

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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What number makes the expressions equivalent? Enter your answer in the box. 1/2(–1.4m + 0.4) =__m + 0.2A) -1.4B) 1.4C) -0.7D) 0.
Snowcat [4.5K]

Answer:

C. -0.7

Explanation:

Given the equation:

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First, distribute the bracket on the left-hand side:

\begin{gathered} \frac{1}{2}(-1.4m)+\frac{1}{2}(0.4) \\ =-0.7m+0.2 \end{gathered}

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6 0
1 year ago
To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the
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Solution :

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Mean    693.75    743.75

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SEM        54.93     50.88

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Null hypothesis : The preparation course not effective.

$H_0: \mu_d = 0$

Alternative hypothesis : The preparation course is effective in improving the exam scores.

$H_a : \mu_d>0$  (after -  before)

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3 years ago
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