3 years ago

HELP!! Which expression is equivalent to 2(14x - 3y + 28x + 12.2 - 5y 17.5)

Mathematics

1 answer:

vlada-n [284]3 years ago

5 0

Answer:

84x-16y-10.6

Step-by-step explanation:

add up all the like terms and then multiply them by 2

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A house is built on coordinates (2,9). There is a water pipeline that runs along the line y = 2 3 x – 1. What is the approximate

Basile [38]

Answer:

7.21 units

Step-by-step explanation:

The shortest length needed to connect the house to the existing pipeline is the perpendicular distance between the location of the house (2,9) and the line y = 2/3x - 1.

The perpendicular distance (d) between a point ( $x_1,y_1$ ) and the line Ax + By + C = 0 is given as:

$d=\frac{|Ax_1+By_1+C|}{\sqrt{A^2+B^2} }$

The line is given by y = 2/3 x - 1; 2/3x - y - 1 = 0. The point = (2, 9)

hence A = 2/3, B = -1, C = -1, $x_1=2,y_1=9\\$ . Therefore:

$d=\frac{|\frac{2}{3}(2)+(-1)(9)+(-1) |}{\sqrt{\frac{2}{3}^2+(-1)^2 } } \\\\d=7.21$

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3 years ago

AB C D E F +3 x2 -3x -18

madam [21]

Answer:

(x + 3) ( x - 6)

Step-by-step explanation:

x² - 3x - 18

x² - 6x + 3x - 18

x(x - 6) + 3(x - 6)

(x + 3) ( x - 6)

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3 years ago

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I really need help. I’m not good at math someone help please

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What is the inverse of the function f(x) = 4x + 8? o n(x) = x-2

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X-2
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3 years ago

Tessellations

Misha Larkins [42]

Answer:

A. Yes; measure of interior angle = 90

Step-by-step explanation:

I calculated it logically

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