Use Gaussian Elimination with Back Substitution or Gauss-Jordan Elimination to solve the following linear system. If no solution exists, say so. If more than one solution exists, give the solution set in parametrized form. Indicate all row operations you perform and show all work. X1 + X2 - 23 + 24 = 0,
2x1 - x2 + x3 = 3,
X2 – X3 + 24 = -1,
3x1 - 23 + 2x4 = 0.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6

i believe it is c.y = 9x

rise over run. 9 units up over 1 unit right or 9/1

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

step-by-step explanation: