MATHEMATICS HIGH SCHOOL

LMN is a right triangle.

A= True
B= False

Answers

Answer 1

Answer:

Answer:

true

Step-by-step explanation:

it has a right angle!

me = big brain

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What is the sum of the polynomials? ( 8x^2 -9y^2-4x) + (x^2- 3y^2- 7x) answer options are in the pics

Answers

Answer: The correct option is (D) $9x^2-12y^2-11x.$

Step-by-step explanation: We are given to find the following sum of the polynomials :

$S=(8x^2-9y^2-4x)+(x^2-3y^2-7x)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)$

To find the required sum, we need to add the coefficients of the same unknown variables with equal powers.

The sum of the polynomials in (i) is as follows :

$S\n\n=(8x^2-9y^2-4x)+(x^2-3y^2-7x)\n\n=8x^2-9y^2-4x+x^2-3y^2-7x\n\n=(8+1)x^2-(9+3)y^2-(4+7)x\n\n=9x^2-12y^2-11x.$

Thus, the required sum of the polynomials is $9x^2-12y^2-11x.$

Option (D) is CORRECT.

(8x^2-9y^2-4x)+(x^2-3y^2-7x)

First, get rid of the parentheses and combine like terms

(8x^2+x^2)(-9y^2-3y^2)(-4x-7x)

9x^2-12y^2-11x is your answer

What is the sum of the interior angle measures of a regular octagon

Answers

The requried sum of the interior angle measures of a regular octagon is 1080°.

What is a polygon?

A polygon is defined as a geometric shape that is composed of 3 or more sides these sides are equal in length, and an equal measure of angle at the vertex,

Examples of polygons, equilateral triangles, squares, pentagons, etc

Here,

The Sum of interior angles of a polygon with n sides is given as,
= (n-2) × 180°

Since an octagon has 8 sides,
So put n = 8

The Sum of interior angles of a octagon = (8-2) × 180°
= 6 × 180° = 1080°

Thus, the requried sum of the interior angle measures of a regular octagon is 1080°.

Learn more about polygon here:

brainly.com/question/24464711
#SPJ2

You would first need to find the exterior angle of the octagon first in order to find the interior angle of the octagon. Since all the exterior angles of any polygon is 360, you would divide 8 from 360 which is 45
Exterior Angle=45
Then, you would subtract 45 from 180, since the exterior angle + the interior angle is equal to 180 degrees.
180-45=135
Exterior Angle=135

5. multiply 9x^2(2x^2 8x) a) 18x^4 72x^3 b) 18x^2 72x^3 c) 11x^4 - 17x^3 d) 90x^4

Answers

9x^2(2x^2 + 8x) = 18x^4 + 72x^3

What is the domain of the function shown in the graph 1) all real numbers
2)all real numbers less than 0
3)all real number greater than 0
4)all real numbers including 2 and 6

Answers

Answer:

The answer to your question is number 1) all real numbers.

Step-by-step explanation:

The Domain is all the set of numbers the x-axis could have.

In the graph, we notice a line that goes from zero to six, we could think that the domain is that interval but as the line has arrows, we can think that the line grows up in both senses, then the domain must be all real numbers.

Find f(-7) if f(x) = 2x + 8. -6 2 3 22