Write a number that means the same as (5×10,000) + (4×100) +(3×1)
2 answers:
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Answer:
1120°
Step-by-step explanation:
Use the sum of interior angles formula:
Where n is the number of sides.
In a nonagon, there are 9 sides, substitute 9 for n:
Since our nonagon is a regular nonagon, all 9 angles measure the same, so each angle measures:
Subtract 140 from 1260:
Answer:
<em>(1). </em><em> × </em>
<em> ; (2). 3 - 5x</em>
Step-by-step explanation:
1). [( - 5 )³ · ( - 5 )] ( ·
) =
×
=
×
=
×
2). - 25x² ÷ 5x + 15x ÷ 5x = <em>3 - 5x</em>