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Alenkinab [10]
2 years ago
7

What is 3x+5=2x-7 need step by step explanation

Mathematics
2 answers:
Eddi Din [679]2 years ago
8 0

Answer:

-12

Step-by-step explanation:

3x+5=2x-7

3x-2x+5= -7

x+5= -7

x= -7 - 5

x = -12

Lady bird [3.3K]2 years ago
3 0

Answer:

x=-12

Step-by-step explanation:

Subtract 2x from both sides

3x + 5 - <u>2x</u> = 2x - 7 - <u>2x</u>

x + 5 = -7

Now Subtract 5 from both sides

x + 5 - <u>5</u> = -7 - <u>5</u>

x = -12

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6 0
3 years ago
Solve for x: 4 over 5 x + 4 over 3 = 2x x =
Naily [24]

Answer:

over 5 x + 4 over 3 = 2x

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Hi McDa:

Here's a couple hints. (I have no idea what you already understand. Please check out our posting guidelines.)

Express the Natural number 3 in Rational form 3/1.

4

5

x

+

4

3

1

=

2

x

Regarding the left-hand side above, have you learned the property that says we may multiply by the reciprocal of 3/1, instead of dividing by 3/1?

Step-by-step explanation: Incorrect? Let me know!

8 0
3 years ago
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topjm [15]
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8 0
3 years ago
The central angle of a regular polygon is 18 degrees. Th e perimeter of the polygon is 144 ft. What is the area of the polygon t
Diano4ka-milaya [45]
Given that the central angle of a polygon is 18, then the number of sides of the polygon will be:
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144/20
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p=s×n
a=s/[2tan(180)/n]
where:
Area=(a×p)/2
p=perimeter, s=side length, n=number of sides
p=7.2×20=144
a=7.2/[2tan (180/20)]=22.73
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Read 2 more answers
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