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3 years ago

Can you help please no links or point stealing or I will report

Mathematics

2 answers:

avanturin [10]3 years ago

7 0

Answer: first one 5.55

Step-by-step explanation:

-4x+8=42

-4x+8-8=42-8

-4x=34

-4x/-4=34/-4

x= - 17/3

frutty [35]3 years ago

7 0

Answer:

Second one : x=-8+1/2

Step-by-step explanation:

-4x+8=42

We move all terms to the left:

-4x+8-(42)=0

We add all the numbers together, and all the variables

-4x-34=0

We move all terms containing x to the left, all other terms to the right

-4x=34

x=34/-4

x=-8+1/2

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CaHeK987 [17]

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6 0

3 years ago

Read 2 more answers

A) be 85° 120° (2x - 10° X

Lunna [17]

Let's see what to do buddy...

_________________________________

Step (1)

We know that the sum of the interior angles of any n-sided figure is obtained from the following equation :

$(n - 2) \times 180$

Our figure has 5 sides ;

So , sume the interior angles of it equals :

$(5 - 2) \times 180 = 3 \times 180 = 540 \\$

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Step (2)

First look at the photo which I post.

According it we have :

$(180 - x) + 120 + 85 + (2x - 10) + 90 = 540 \\$

$2x - x + 475 - 10 = 540$

$x + 465 = 540$

Subtract the sides of the equation minus 465 :

$x = 540 - 465$

$x = 75$

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And we're done.

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