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3 years ago

-11=a+7 dolce equation

Mathematics

2 answers:

Lemur [1.5K]3 years ago

5 0

In order to get the answer to this question you will have to subtract 11 on both sides.

$-11=a+7$

$-7-7$

$-11 - 7 = -18$

$-18 = a$

$a = -18$

Which will mean the answer would be "-18."

Hope this helps.

zubka84 [21]3 years ago

4 0

-11 = a + 7 Given

-7 -7 Subtract 7 on each side to cancel out +7 and isolate variable

-18 = a Answer

Prove.

-11 = -18 + 7 Plug in variable value

-11 = -11

True.

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1 year ago

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3 years ago

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2 years ago

There are about 320 million people living in the United States. Of these, how many would you predict wear corrective lenses

tiny-mole [99]

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3 years ago

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PLEASE HELP! due tmr! 24 26 55 99

SVETLANKA909090 [29]

Answer:

99°

Step-by-step explanation:

Internal Angles of triangles ALWAYS add up to 180°

So, 180° is our total.

We can form an equation. x° + 55° + (4x - 5)° = 180°

We can remove the brackets to form; x° + 55° + 4x° - 5° = 180°

We can get rid of the like terms by either adding or subtracting them.

x° + 4x° + 55° - 5° = 180°

5x° + 50° = 180°

We can then subtract 50° from both sides.

5x° = 180° - 50°

5x° = 130°

We then make x the subject and divide both sides by 5°

x = 26

x was our unknown so where there is x we put 26

The angle on the far left is simply 26°

The other angle, (4x-5)° becomes (4(26) - 5)°

If you simplify that, you get (104-5)°

Hence the last angle was 99°

If you want to ensure that your answer is correct, simply add the angles. They should always add up to 180° if you're working with a triangle

55° + 26° + 99° = 180°

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2 years ago

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