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Orlov [11]
2 years ago
5

Can anyone help me to sove it?​

Mathematics
2 answers:
Mumz [18]2 years ago
8 0
Iam not very sure but i think y=22.5
MArishka [77]2 years ago
3 0

In triangle ABC and PQR,

  • Angle A = Angle P

( they are equal, measures 60° each )

  • Angle B = Angle Q

( they are equal, measures 43° each )

so, the given triangles are Similar by

=》AA Similarity criterion

now, since the triangles are similar

the corresponding sides will be proportional,

=》

\frac{AC }{PR}  =  \frac{BC }{QR}

=》

\frac{6}{15}  =  \frac{9}{y}

=》

\frac{2}{5}  =  \frac{9}{y}

=》

2y = 45

(by cross multiplication)

=》

y = 22.5

value of y = 22.5 cm

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Flying with the wind a plane went 198 mph. Flying into the same wind the plane only went 162 mph. Find the speed of the plane in
olganol [36]

Answer: speed of plane in still air is 180 miles per hour

speed of the wind is 18 miles per hour

Step-by-step explanation:

Flying with the wind, the plane went 198 miles per hour. This means if was flying in the same direction with the wind. This is same as the speed in still air because there was no opposition from the wind.

Flying into the same wind the plane only went 162 mph. This means that the plane flew against the wind

Let x = the speed of the plane

Let y = the speed of the wind

when flying with the wind,

x + y = 198 - - - - - - -1

When flying against the wind,

x - y = 162 - - - - - - - -2

Subtracting equation 2 from equation 1,

y - - y = 198 - 162

2y = 36

y = 36/2 = 18 miles per hour

x = 198 - y = 198 -18

x = 180 miles per hour

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3 years ago
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Fynjy0 [20]

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Answer:

Step-by-step explanation:

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