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True or false
1. Every linear system of four equations in five unknowns has infinitely many solutions.
2. If two systems of linear equations have augmented matrices that row reduce to the same reduced row echelon form, then they have the same solution set.
3. If a system of m linear equations in four unknowns has a unique solution, then m must be greater than or equal to four.
4. If a system of m linear equations in four unknowns has no solutions, then m must be greater than or equal to four.
5. A system of three linear equations in three unknowns has a unique solution if and only if its coefficient matrix is row equivalent to the 3x3 identity matrix.
In 1999, the expectancy of males in a certain country was 65.5. In 1995, it was 68.0 years. Let E represent the life expectancy in year T represent the numbers of years since 1991.
let f be a multivariable function defined by fx y x3y - x2y2 where x and y are real numbers. choose the same point to
Sketch a graph that might show the height of the water as a function of time (height-time graph) first for the cylinder and then for the cylindrical cone.
A production line delivers 9,400 widgets in a year. The widgets are delivered 6 per cart. Each cart takes 5 minutes and 28 secs.
Find explicitly Gal(x^3 - 2) over Q (the rationals). That is, explicitly give the automorphisms.
Find the inverses of the equations
The book gives for v2= (0,0, 1)^T, and for V3, he added to use formula (A-2I)^2 v =0 to find v3 to be v3= (0,1,0)^T.
Determine an expression for the output current i = i1 + i2 the form R sin (wt + α) and thus state its amplitude and phase angle
An environmental group estimates that the amount of pollution in a pond will decrease by 10% each month. To determine the concentration C, of pollutants (in parts per million) after (m) months, the group uses the function .
49 percemy of all people who buy running shoes don't run at all. Assuming 340,000 people buy running shoes, how many will use them to run in
Problem on profit & loss
Factor of the given polynomial
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