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13 June, 01:15

Assign two variables for each problem, and write the equations. Do not solve.

1) Two different types of batteries are needed to run Joshua's remote-controlled jeep. The two batteries produce a total voltage of 6.5 V. The difference in their voltage is 2.5 V. Determine the voltages of the two batteries.

2) Jason, a Vendor at the Minute Maid Park in Houston, sells two sizes of drinks. One costs $1.00 and the other costs $1.50. He knows he sold a total of 230 drinks for a total of $285.00. How many small drinks did he sell?

Need two variables and two equations for both.

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Answers (2)
  1. 13 June, 03:02
    0
    1. x represents one battery, y represents the other battery x+y=6.5 x-y=2.5 2. x represents the number of small drinks sold, y represents the number of other size drinks sold x+y=230 x+1.5y=285
  2. 13 June, 04:04
    0
    A = first battery type

    b = second battery type

    a + b = 6.5 V

    a = (6.5 V) - b

    b - a = 2.5 V

    b - (6.5 - b) = 2.5

    2b - 6.5 = 2.5

    2b = 9.0

    b = 4.5 V

    a = 6.5 - 4.5

    a = 2.0 V
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