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yanalaym [24]
3 years ago
8

The stack on the left is made up of 15 pennies, and the stack on the right is also made up of 15 pennies. If the volume of the s

tack of pennies on the left is 390 mm3, what is the volume of the stack of pennies on the right in cubic millimeters? (Hint: only enter numerals in the answer blank)
Mathematics
2 answers:
Nimfa-mama [501]3 years ago
5 0
It would be 390 mm3 because theyre the same thing

Law Incorporation [45]3 years ago
3 0

Answer:

390 they are literally the same thing

Step-by-step explanation:


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Answer:

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Step-by-step explanation:

<u>Use identities to set the equation up as a quadratic</u>

\cos x=\cos 2x;\:0^\circ \leq x \leq 360^\circ\\\\\cos x=2\cos^2 x-1\\\\0=2\cos^2 x-\cos x-1

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\displaystyle 0=2u+1\\\\0=2\cos x+1\\\\-1=2\cos x\\\\-\frac{1}{2}=\cos x\\\\120^\circ,240^\circ=x

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