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cupoosta [38]
3 years ago
5

in a metal​ alloy, the ratio of zinc to copper is 3 to 17. If there are 510 lb of​ copper, how much zinc is​ there?

Mathematics
1 answer:
Andreyy893 years ago
5 0

Answer:

Step-by-step explanation:

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Find the angle between the given vectors. Round your answer, in degrees, to two decimal places. u=⟨2,−6⟩u=⟨2,−6⟩, v=⟨4,−7⟩
NISA [10]

Answer:

\theta = 108.29

Step-by-step explanation:

Given

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For a vector

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cos\theta = \frac{-16}{\sqrt{2600}}

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\theta = cos^{-1}(\frac{-8}{5\sqrt{26}})

\theta = cos^{-1}(\frac{-8}{5 * 5.0990})

\theta = cos^{-1}(\frac{-8}{25.495})

\theta = cos^{-1}(-0.31378701706)

\theta = 108.288386087

<em></em>\theta = 108.29<em> (approximated)</em>

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