Which of the following is the sum of two polynomials 3x^2-5x+2 and 5x^2-2x-6.

1 answer:

6 0

A polygon is a planar figure characterized by a limited number of straight-line segments joined to create a closed polygonal chain in geometry. The correct option is A.

<h3>What is a polygon?</h3>

A polygon is a planar figure characterized by a limited number of straight-line segments joined to create a closed polygonal chain in geometry. A polygon is defined as a bounded planar region, a bounding circuit, or both.

The sum of the two given polynomial can be done as,

(3x² - 5x + 2) + (5x² - 2x - 6)

= 3x² - 5x + 2 + 5x² - 2x - 6

= 3x²+5x² -5x -2x -6 +2

= 8x² - 7x - 4

Hence, the correct option is A.

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Write an equation for a line that is parallel to 2x+5y=15 and passes through the point (-10, 3)

Lyrx [107]

Answer:

The equation of the line is,

$y = - \frac{2}{5} x - 1$

Step-by-step explanation:

First, you have to write it in a form of y = mx + b :

$2x + 5y = 15$

$5y = 15 - 2x$

$y = 3 - \frac{2}{5} x$

$y = - \frac{2}{3} x + 5$

When both lines are parallel to each other, they will have to same gradient value. So the equation of the line is y = (-2/5)x + b. Next, you have to find the value of b by substutituting (-10,3) into the equation :

$y = - \frac{ 2}{5}x + b$