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2 years ago

What is the sum of 2x+1 and its opposite?

Mathematics

2 answers:

Masja [62]2 years ago

6 0

Answer:

Zero. The sum of anything and it's opposite is zero, that's how an opposite is defined . In this case, the opposite of 2x+1 is -(2x+1)=-2x-1 by the distributive property . Adding like terms, 2x+-2x+1+-1=0+0=0.

olga_2 [115]2 years ago

6 0

0 (i dont have a proper explanation)

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Solve the linear system by graphing y=x+2 and y=-6x+9

skelet666 [1.2K]

Answer:

(1, 3)

General Formulas and Concepts:

Algebra I

Coordinates (x, y)
Reading a Cartesian (Rectangular) plane
Solving systems of equations by graphing

Step-by-step explanation:

Where the 2 lines intersect will be the solution set to the systems of equations.

If the lines are parallel, they will have no solution.

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2 years ago

A blueprint of a barn is shown.The scale is 5 inches =8 feet. Find the actual length of the wall that is labeled 20 inches.

kenny6666 [7]

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2 years ago

What is 7 x 4 + 6 - 12 divided by 4

lukranit [14]

Answer:

Step-by-step explanation:

Multiply the numbers 7 * 4, which gets your 28.

= 28+6-12/4

Divide the numbers 12/4, which gets you 3

=28+6-3

Add/Subtract the numbers 28+6-3

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3 years ago

Find the mean median and mode (I NEED HELP ASAP)

Lina20 [59]

Answer:

12) mode= no mode

mean=62

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13) mode=74

mean=78

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14) mode=80

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median=75

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mean=51

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median=77

18)mode=no mode

mean=79

median=78

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median=79

hope that helps :D

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2 years ago

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MaRussiya [10]

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4x3=12
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2 years ago

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