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ruslelena [56]
3 years ago
13

A number is tripled and tripled again is 729.What is the number

Mathematics
1 answer:
lesya [120]3 years ago
8 0
You'd do 729÷3=243, then 243÷3=81. The number is 81. I hope this helps!
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I WILL AWARD BRAINLIEST!! PLEASE HELP!!
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Answer:

m∠EBC=65° 15' and AC=20in

Step-by-step explanation:

Given:

AB≅BC

AE=10in\\m\angle FEC=90\\m\angle ABC=130\°30'

From the given Data, we can conclude the following:

1. Since two sides of the triangle ABC are congruent, therefore its an isosceles triangle.

2. m\angle FEC=90°. This shows that the line BE is perpendicular to AC. By property of isosceles triangle, the line which passes from the vertex of the largest angle of triangle and cuts the opposite side(base) perpendicularly is the perpendicular bisector of the side and angle bisector of the angle.

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m\angle ABC=130\°30'

m\angle EBC=\frac{m\angle ABC}{2}=\frac{130\°30'}{2}=65\°15'

m\angle EBC=65\°15'

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AC=AE+EC

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3 years ago
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Step-by-step explanation:

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