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Jlenok [28]
3 years ago
11

Helpppp. ................

Mathematics
1 answer:
zhuklara [117]3 years ago
8 0

Answer:

1/x^2

Step-by-step explanation:

When you have a negative sign in the exponent, the integer will become fraction.

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If AB = 4 centimeters, which is closest to BC?
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Answer:

The correct answer AC = 11.52

Step-by-step explanation:

From the figure attached with this answer shows the triangle ABC.

BC=4 centimeters, m angle B=m angle c, and m angle a = 20 degrees

To find AC

From the figure we can see that D is the mid point and AD⊥BC

Then BD = CD = 4/2 = 2 cm

<BAD = 10° and <CAD = 10°

By using trigonometric ratio,

sin 10 = CD/AC = 2/AC

AC = 2/sin 10 = 2/0.1736 = 11.52

Therefore the value of AC = 11.52 cm

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2 years ago
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3 years ago
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Twice the sum of a number and 10 is -20
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Let, the number = x

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