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2 years ago

Please help solve both due soon

Mathematics

1 answer:

Mariana [72]2 years ago

7 0

Answer:

x is 7

EF is 10

FG is 12

Step-by-step explanation:

$EF + FG = EG \\ (4x - 18) + (3x - 9) = 22 \\ 7x - 27 = 22 \\ 7x = 49 \\ x = 7$

then substitute:

$EF = 4x - 18 \\ EF = 4(7) - 18 \\EF = 28 - 18 \\ EF = 10$

$FG = 3x - 9 \\ FG = 3(7) - 9 \\FG = 21 - 9 \\ FG = 12$

First question:

BC + BA = CA

BC = CA - BA

BC = 36 - 9

BC = 27

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Part a

For this case we have the multiple regression model given by:

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And we want to find the expected amount from a 340-mile trip that took her out of town for 5 days, so we just need to replace x1= 5 and x2=340 and we got:

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So then the correct answer would be:

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The coefficient of determination "is a measure used in statistical analysis that assesses how well a model explains and predicts future outcomes. It is indicative of the level of explained variability in the data set".

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