simultaneous equations with three variables and three equations

Identify the variable expression for the phrase "The difference between k and 1 2 is equal to 3". => 1 2 - 2 k = 3 or k - 1 2 = 3 or k + 1 2 = 3 or 1 2 k = 3..

Solve the equation x 3 = 4 2 3 to find the value of the variable x . => 4 2 3 or 14 or 14 9 or 2..

The total expenses (in billion dollars) for recreation spent for a period of 10 consecutive years by a country are shown here. Find the 98% confidence interval for the standard deviation. Assume that the variable is nomally distributed. 13 14.1 15.2 16.2 16.9 17.3 18.3..

Identify the equation wherein you would isolate a variable easily so that substitution method can be used to solve the linear system. 4 x + 7 y = 1 [Equation 1] x - 3 y = - 2 [Equation 2] => Equation 1 or Equation 2 or Both ..

Which of the following equations would you use to isolate the variable? -5 x + y = 14 [Equation 1] 3 x + 2 y = 8 [Equation 2] => Equation 1 or Equation 2..

By what number would you multiply the first equation in order to eliminate the variable x when the equations x + 3 y = 6; 2 x + 5 y = 7 are added? => 1 or - 2 or - 1 or 2..

Find the variable x .[Given a = 2 x ° and b = 3 x °.] => 72 or 36 or 108 or 26..

The snowfall (in inches) from a random sample of 10 counties in U.S. in the month of January are as follows. 3 5 4 2 4 6 2 2 1 4 At α = 0.05, test the hypothesis that the standard deviation of snowfall is less than 2.8 inches. What is the chi-square test value? [Assume that the ..

Write a variable expression for the phrase. Five times the value of 3 7 of the length l is less than four times the width w of a box. => 5( 3 7 l ) < 4 w or ( 3 7 l ) < 4 w or ( 3 7 l ) < w or 5( 3 7 l ) < w..

Ed earns $ p per hour working as a translator. He must work for h hours to earn $325. Which of the following equations best relates the variables? => p = h 3 2 5 or h p = 325 or h = p 3 2 5 or h p = 325..