Prove that a square matrix is invertible if and only if its columns are linearly independent

Why do teachers give out so much homework? I can understand why colledge and hugh school get it, but why the younger ones? They're still delevoping. Why? (This doesn't have to do with any subjects; it's not math) ...

A line slop is 3 and it's y intercept is 6 what is its equation in slope intercept form Write your answer using intercept proper fraction and improper fractions in simplest form

function has the function rule y = - 7x - 2. If the input is - 4, what is the output?

Jenny and Sarah go to lunch at the Green Grill. Their meals are $28.00 total. The sales tax is 6%. What is the total cost including tax?

A colony of ants carried away 22 of your muffins. That was of all of them! With how many did you start?

Solve for q. -15 - 18q = - 20q + 15 q =

Represent the proportional relationship described with an equation where d equals dogs and c equals cats: three dogs for each cat

Ou can draw a quadrilateral with two sets of parallel lines and no right angles. a. True b. False

There are 8 candidates for student government: Hal, Mary, Ann, Frank, Beth, John, Emily, and Tom. The three candidates that receive the highest number of votes become candidates for a runoff election. How many 3-candidate combinations are possible?

If n=1 and m=3 then n^2=2 and m=6 what is wrong with this question