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4 years ago

2,300+-2,500+3,300+-2,600+6,250

Mathematics

2 answers:

tino4ka555 [31]4 years ago

8 0

I am pretty sure that it is 11,750.

Lorico [155]4 years ago

5 0

1 Simplify

2300−2500+3300−2600+6250
2 Simplify

6,750

I hope this helps.

Have a awesome day. :)

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Assume that $x\; {\rm km \cdot h^{-1}}$ is the speed of the plane in still air, and that $y\; {\rm km \cdot h^{-1}}$ is the speed of the wind.

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The question states that when going against the wind ( $v = (x - y)\; {\rm km \cdot h^{-1}}$ ,) the plane travels $6111\; {\rm km}$ in $9\; {\rm h}$ . Hence, $9\, (x - y) = 6111$ .

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