3 years ago

A 4 kg bird is flying with a velocity of 4 meters per second it what is its kinetic energy

Mathematics

1 answer:

KonstantinChe [14]3 years ago

8 0

KE=1/2*4000mg*4 squared= 16

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Answer:

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3 years ago

Elimination method: ax+by=r, -bx+cy=s

Alex17521 [72]

$\left[\begin{array}{ccc}ax+by=r\\\\-bx+cy=s\end{array}\right]$

Isolate x for $ax+by=r$

$x= \frac{r-by}{a} ; a \neq 0$

Subsititute $x= \frac{r-by}{a}$

$-b \frac{r-by}{a} +cy=s$

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The solutions to the system of equations are:

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hope this helps!

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3 years ago

Find tan A 8/15 B 15/8 C 15/7 D 8/17

alex41 [277]

Answer:

cos α = 8/17

Apply Pythagoras theorem for triangle ,

Let get unknown side of triangle is y

17^2 = 8^2 + y^2

17^2 - 8^2 = y^2

225 = y^2

y = sqrt(225)

y = 15

tan α = 15/8

Step-by-step explanation:

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3 years ago

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4 years ago

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I would say the answer is B.

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