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bezimeni [28]
2 years ago
8

Add the two expressions. 3x + 7 and 9x−2

Mathematics
2 answers:
dexar [7]2 years ago
4 0

Answer:

  • 12x + 5

Step-by-step Solution:

  • (3x + 7) + (9x − 2)

[Opening the brackets]

  • => 3x + 7 + 9x - 2

[Combining Like terms]

  • => (3x + 9x) + (7 - 2)

[Simplifying]

  • => 12x + 5

aleksklad [387]2 years ago
3 0

Let's add

\\ \tt\hookrightarrow 3x+7+(9x-2)

  • Remove brackets

\\ \tt\hookrightarrow 3x+7+9x-2

Combine like variables

\\ \tt\hookrightarrow 3x+9x+7-2

\\ \tt\hookrightarrow 12x+5

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Find the distance between E(-3,4) and B(-1,6)​
Marrrta [24]

Answer:

The answer is

<h2>2 \sqrt{2 }  \:  \: or \:  \: 2.828 \:  \:  \: units</h2>

Step-by-step explanation:

The distance between two points can be found by using the formula

<h3>d =  \sqrt{ ({x1 - x2})^{2}  +  ({y1 - y2})^{2} }  \\</h3>

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

E(-3,4) and B(-1,6)

The distance between them is

<h3>|EB|  =  \sqrt{ ({ - 3 + 1})^{2} +  ({4 - 6})^{2}  }  \\  =  \sqrt{ ({ - 2})^{2}  +  ({ - 2})^{2} }  \\  =  \sqrt{4 + 4}  \ \   \\  = \sqrt{8}</h3>

We have the final answer as

<h3>2 \sqrt{2 }  \:  \: or \:  \: 2.828 \:  \:  \: units</h3>

Hope this helps you

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Ulleksa [173]

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Step-by-step explanation:

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