posted by .

1. x-3

7x-3x = 4 x -6 turns into +6 so 4x=12 x=3

2. 13=5-13+3x 13=-8 +3x 21 = 3x x=7
3. x+x+x+3x+2-6 = 31 6x -4 = 31 6x=35 = 5.83 (are you sure its 3 x's?)

5. 5-t-t=-1 5-2t=-1 -2t = -6 t= 3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    The numbers -3, -4, and 6 are used once and substitued at random for a, b, and c in the equation ax+b=c. What is the probability that x turns out to be negative. I'm not sure where to begin with this. Can you help?
  2. College Physics

    The Daytona 500 stock car race is held on a circular track that is approximately 2.25 miles long, and the turns are banked at an angle of 32.5°. It is currently possible for cars to travel through the turns at a speed of about 189 …
  3. statistics

    90% confidence interval for ì turns out to be (150, 250). Based on the interval, do you believe the average is equal to 260?
  4. physics

    a transformer has 200 turns in its primary coil, the potential difference across the transformer is 220V needs to operate an electrical instrument uses a 110 volts. the number of turns in its secondary coil is: a) 100 turns b) 200 …
  5. Physics

    In a step-up transformer, which of the following statements is correct?
  6. physcial science

    If a step-up transformer has a primary coil with 15 turns, how many turns would be required in the secondary coil in order to increase the voltage from 80 volts to 160 volts?
  7. physics

    An electrical device contains a transformer. Its primary coil has 200 turns, and its secondary coil has 20 turns. If the device is plugged into a 120-volt line, what is the output voltage of the device?
  8. Math

    An athlete prepares for the Comrades. He jogs out to a certain point and then turns back home. On the first day he turns after 6m.on the second day he turns after 10km. On the third day he turns after 14km. 1.after how many kilometres …
  9. Physics- Help!!

    A step-up transformer is used on a 100 V line to increase the potential difference to 1200 V. If the primary has 120 turns, then what is the number of turns in the secondary coil?
  10. Math

    Write a mathematical expression to represent this situation. Then find the value of the expression to solve the problem. You play a game where your score -6 points on the first turns and one each of the next 3 turns. What is your score …

More Similar Questions