problems on simultaneous equations with three variables

In a two-way ANOVA, variable A has three levels and variable B has five levels. The number of data values in each group is four. Find the degrees of freedom for for factor A , factor B , factor A × B and for the within (error) factor. => 3, 5, 15, 45 or 2, 4, 8, ..

Choose an algebraic sentence for "The cube of the quantity nine less than a number is equal to 64". Use a as the variable. => 3( a - 9) = 64 or ( a - 9) 3 = 64 or 3 a - 9 = 64 or a 3 - 9 = 64..

Choose an algebraic sentence for the word sentence "The square of a number increased by three times the same number is 54". Use t as the variable. => t 2 = 3 t + 54 or t 2 + 3 t = 54 or t 2 = 3( t + 54) or 2 t + 3 t = 54..

Choose the variable parts of the terms of the expansion. ( c + d ) 5 => c 5 , d 5 or c 5 , c 4 d , c 3 d 2 , c 2 d 3 , c d 4 , d 5 or c 6 , d 6 or c 5 d 5 , c 4 d 4 , c 3 d 3 , c 2 d..

Solve the formula V = 1 3 π r 2 h for the variable h . Indicate any restrictions on the values of the variables. => h = 3 + r 2 π V , V ≠ 0 or h = 2 π r V 3 , r ≠ 0 or h = 3 V π r 2 , r ≠ 0 or h = V 3 π r ..

Which of the following choices is the coefficient of the variable x in the equation, 7 x - 4 = 3? => 7 or 8 or 10 or 12..

Evaluate the variable expression 2 a + 6 ÷ 3 × 2, when a = 5. => 17 or 16 or 15 or 14..

A rope is cut into 8 equal pieces. A length of 3 ft is again cut from each of the 8 pieces. Choose the correct variable expression for the new length of each piece. Let x be the length of the original rope. => (8 x - 3) ft or (8 x + 3) ft or ( x 8 - 3..

Although the probability distribution of a continuous random variable cannot be presented in tabular form, it can have a formula in the form of a function represented by f(x) usually called the probability density functio..

Determine the relationship between the variables X and Y. X Y 0 0 1 0.5 2 0.7 3 0.9 4 1 => negative relationship or no relationship or curvilinear relationship or positive relationship..