the Gateway Arch in St. Luis, Missouri, weighs about 20,000 tons. Write an amount that could be the exact number of tons the Arc
1 answer:
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Answer:
B
Step-by-step explanation:
A is correct because was added on both sides, which is supported by the Additive Property of Equality
C is correct because the Quotient Property of Logarithms states that
so is correct
D is correct because using the fact that it is easy to figure out that x=12
For B, there is no property supporting that statement.
Answer:
Option C
Step-by-step explanation:
- For the matrix A of order
to be invertible, its determinant must not be equal to zero, |A|
0,
exists if- AC = CA = I, where I is identity matrix.
- The homogeneous equation with coefficient matrix A has a unique solution:
AB = 0, B =
Thus, B = (0, 0, 0......., 0) is a unique solution
2. The non - homogeneous equation system with coefficient matrix A has a unique solution:
For an equation- AY = D
Y = is a unique solution
3. Every non homogeneous equation with coefficient matrix A is not consistent as:
For an equation- AY = D, has a solution.l Thus coefficient matrix is inconsistent whereas augmented matrix is.
4. Rank of matrix A = n, Thus the column space of A is
5. Since, column space of A = , thus x→xA is one-to-one