3 years ago

Does anyone know 3²?

Mathematics

1 answer:

Vadim26 [7]3 years ago

8 0

Answer:

It is 9.

Step-by-step explanation:

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t=45min
d=4km

45min/60min = 0.75 hours

v=d/t
v=4km/0.75hours
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3 years ago

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Ksenya-84 [330]

Answer: im not sure

Step-by-step explanation:

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3 years ago

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ira [324]

Answer:

10 is the answer

Step-by-step explanation:

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3 years ago

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The magnitude of vector a = (5,m) is 13 and the magnitude of vector b = (n, 24) is 25. What are m and n

Ulleksa [173]

Answer:

$m=12\,,n=7$

Step-by-step explanation:

The magnitude of vector $(x,y)$ is given by $\sqrt{x^2+y^2}$

The magnitude of vector $a=(5,m)$ is $13$ .

$\sqrt{5^2+m^2}=13\\5^2+m^2=13^2\\25+m^2=169\\m^2=169-25\\m^2=144\\m=12$

The magnitude of vector $b=(n,24)$ is $25$ .

$\sqrt{n^2+24^2}=25\\n^2+24^2=25^2\\n^2+576=625\\n^2=625-576\\n^2=49\\n=7$

Therefore,

$m=12\,,n=7$

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3 years ago

Use trigonometric expressions to build an equivalent trigonometric identity with the given expression: sec (x) tan (x) cos (x) c

Bess [88]

Answer:

sec (x)

Step-by-step explanation:

sec (x) tan (x) cos (x) csc (x) =

We know sec = 1/ cos

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Replacing into the expression

1/ cos (x) * sin(x)/ cos (x) * cos (x) * 1 / sin(x)

Canceling like terms

1/ cos (x)

sec(x)

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3 years ago

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