3 years ago

3 (3x + 2y) - 2 (4x - 2y)

Mathematics

2 answers:

Ivanshal [37]3 years ago

7 0

1x+10y would be your answer

vagabundo [1.1K]3 years ago

5 0

Step-by-step explanation:

9x+6y-8x+4y

9x-8x+6y+4y

x+10y#

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A woman walks due west on the deck of a ship at 3 mi/h. The ship is moving north at a speed of 22 mi/h. Find the speed and direc

Minchanka [31]

Answer: The speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

Step-by-step explanation:

Since we have given that

Speed at which woman walks due west = 3 mi/hr

Speed at which ship moving due north = 22 mi/hr

Now it forms "Pythagorus theorem":

So, it becomes,

$H^2=B^2+P^2\\\\H^2=3^2+22^2\\\\H^2=9+484\\\\H^2=493\\\\H=\sqrt{493}\\H=22.20\ mi/hr$

And the direction of the woman relative to the surface of the water is given by

$\theta=\sin^{-1}x(\dfrac{3}{22.2})=7.76\approx 8^\circ$

Hence, the speed is 22.2 mi/hr and woman is 8° north relative to the surface of the water.

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3 years ago

If x = 5 and 5 = y, then x = y

garri49 [273]

You are right. Transitivity means, that:
if a = b and b = c, then a = c
(here a = x, b=5 and c = y).

5 0

3 years ago

Any help would be nice :)

yaroslaw [1]

Answer:

Step-by-step explanation:

7 0

3 years ago

Plz help me with this

agasfer [191]

Answer:

4) 49 degrees

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3 0

3 years ago

Read 2 more answers

45% grass and the rest paved. how much is paved?

Lana71 [14]

Well we know that total percentages always equals 100 so x + 45 = 100. You should get x = 55%

8 0

3 years ago