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horsena [70]
3 years ago
15

HELP ME PLZZ

Mathematics
1 answer:
Anastaziya [24]3 years ago
6 0

Answer:

2g/cm³

Step-by-step explanation:

p=m/v

mass=80g

volume=4cm x 2cm x 5cm = 40cm²

80g/40cm²=2

density = 2 g/cm³

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Angle θ between two vectors is given by, \theta =cos^{-1}( \frac{u
 \cdot v}{|u||v|} ); where u \cdot 
v=-5(-4)+(-4)(-3)=20+12=32; |u|= \sqrt{ (-5)^{2} + (-4)^{2} } = 
\sqrt{25+16} = \sqrt{41} and |v|=\sqrt{ (-4)^{2} + (-3)^{2} } = 
\sqrt{16+9} = \sqrt{25}=5.
Therefore, \theta =cos^{-1}( \frac{32}{ 5\sqrt{41}} )=cos^{-1}0.9995=1.8^o
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ivolga24 [154]
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irina1246 [14]
It is Interest charge
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nadezda [96]

Answer:

a₃ = 9

Step-by-step explanation:

The numbers in the set are referred to as { a₁, a₂, a₃, ... }

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