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Sedbober [7]
4 years ago
5

Subtract: (3m2 + 2n) – (m2 + 2n)

Mathematics
2 answers:
maksim [4K]4 years ago
8 0
The negative in front of the second bracket means that it's times by -1 so each of their signs switches: 
3m^2+2n-m^2-2n 
Add like terms 
2m^2 
the 2n cancels out 
Lesechka [4]4 years ago
8 0
The answer should be2m^2
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The following estimated regression equation based on 30 observations was presented. ŷ = 17.6 + 3.8x1 − 2.3x2 + 7.6x3 + 2.7x4 The
trapecia [35]

Answer:

a) = 0.9739

b) = 0.969

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Step-by-step explanation:

Given that:

sample size n = 30

SST = 1803

SSR = 1756

R^2 = \dfrac{SSR}{SST} \\ \\ R ^2 = \dfrac{1756}{1803} \\ \\  \mathbf{R^2 =0.9739}

The adjusted R_a^2 is computed as:

R_a^2 = 1 - (\dfrac{n-1}{n-p})(1-R^2)

where;

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R_a^2 = 1 - (\dfrac{30-1}{30-5})(1-0.9739)

R_a^2 = 1 - (\dfrac{29}{25})(0.0261)

R_a^2 = 1 - (1.16)(0.0261)

R_a^2 = 1 -0.030276

\mathbf{R_a^2 \simeq 0.969}

7 0
3 years ago
Eleanor had a gross income of $2478.15 during each pay period in 2010. If she got paid monthly, how much of her pay was deducted
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4 years ago
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