problems on simultaneous equations with three variables

Only when a particle loses electrons can the other particle accept electrons. In other words, a particle can accept electrons only if another particle gives out electrons. This electron-transfer process is possible only when both species are present in the reaction. Hence, oxidation and reduction ..

A coin is tossed and the number cube is rolled simultaneously. Find the probability of getting tail on the coin and number 5 on the cube using tree diagrams. => 3 12 or 5 12 or 2 12 or 1 12..

There can be several r.v's associated with an experiment. A random variable which can assume only a finite number of values or countably infinite values is called a discrete random variable. e.g., Consider a random experiment of tossing three coins simultaneously. Le..

Pick the correct variable expression for the given statement. "Cost of 4 belts and 3 ties is $163." => 4 b = $163 or 4 b - 3 t = $163 or 3 t = $163 or 4 b + 3 t = $163..

A rope is cut into 5 equal pieces. A small piece of 3 ft is again cut from each of the 5 pieces. Choose the correct variable expression for the new length of each piece. => ( x 3 - 5) ft or ( x 5 + 3) ft or (3 - x 5 ) ft or ( x 5 - 3) ft o..

The means of each group of a two-way analysis of variance for two independent variables are plotted and shown in the three graphs. Which of these represents a disordinal interaction? Consider the interaction to be significant. => Both graph 1 and graph 2 or Graph 1 or Graph 3 or..

The height of 5 students are recorded as 4'3", 4'8", 5'1", 5'3" and 4'6". Which of the statements are correct? I. 4'8" is a data value. II. Variable in this case is height. III. Data set is 5. => I and II only or I and III only or II and III only or all the statements ..

The average age of employees in a firm is 35 years. Assume the variable is normally distributed. If the standard deviation is 3 years, then find the probability that the age of a randomly selected employee will be greater than 38 years. => 15.87% or 65.87% or 34.13% or 94.13%..

The university authorities wanted to estimate the average age of the students in their university by taking a random sample of 25 students. The standard deviation was found to be 3 years. Find the 95% confidence interval for the variance (σ 2 ) and standard deviation (σ). Assu..

Solve for the variable in the equation. 2 a = - 6 => - 8 or - 4 or - 3 or 3..