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3 years ago

12

Simplify (3x + 5) + (2x - 9) - (4x + 3

2 answers:

Ne4ueva [31]3 years ago

8 0

Answer: the correct answer is x-7

Law Incorporation [45]3 years ago

4 0

If you would like to simplify (3 * x + 5) + (2 * x - 9) - (4 * x + 3), you can do this using the following steps:

(3 * x + 5) + (2 * x - 9) - (4 * x + 3) = 3 * x + 2 * x - 4 * x + 5 - 9 - 3 = 1 * x - 7 = x - 7

The correct result would be x - 7.

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Yuliya22 [10]

The table is missing in the question. The table is attached below.

Solution :

Let X = appraised value

Y = area (square feet)

The regression line is given by :

$\hat y = b_0+b_1X$

$b_1=\frac{n\sum XY-\sum X \sum Y}{n \sum X^2-(\sum X)^2}$

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$=\frac{33370}{15}-\left(12.3267 \times \frac{2157}{15}\right)$

$b_0=452.0841$

The regression line is :

$\hat Y = 452.0841+12.3267 X$

To estimate the error variance, we have:

Error variance, $\sigma =\sqrt{\frac{\sum (Y-\hat Y)^2}n-2{}}$

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8 0

3 years ago

H(x) = 9x2 + 1<br> PLSSS HELP

nataly862011 [7]

Answer: 82

Step-by-step explanation:

H=9(-3)^2+1

Simplify both sides of the equation.

h=81+1

81+1 =82

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2 years ago

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3 years ago

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