Where is the mistake in the following work? * Step 1: -9= -3x + 5x + 13
Step 2: -9 = 2x + 13
Step 3: 4 = 2x
Step 4: 2 = x

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Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

The variable in a relation who’s value depends on the value of the independent variable is called what?

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?