A car travels on a straight road with a velocity of 25km/hour in first one hour and in the
1 answer:
You might be interested in
ANSWER
EXPLANATION
Method 1
Vertically opposite angles are equal, therefore
This implies that,
We simplify to get,
Dividing through by 3 gives,
Also,
This implies that,
We simplify the right hand side to get,
We divide both sides both sides by 2 to get,
Method 2
Angles on straight line sums to 180°.
This implies that,
Also,
EXPLANATION
Method 1
Vertically opposite angles are equal, therefore
This implies that,
We simplify to get,
Dividing through by 3 gives,
Also,
This implies that,
We simplify the right hand side to get,
We divide both sides both sides by 2 to get,
Method 2
Angles on straight line sums to 180°.
This implies that,
Also,
Answer:
B, C, E, & F
Step-by-step explanation:
Option A is incorrect because the equation Ax = b is referred to as a matrix equation, not a vector equation.
Option B is correct. If Ax = b has a solution, vector b will a linear combination of columns of matrix A.
Option C is correct. In a matrix equation, product Ax when defined, is a sum of products.
Option D is incorrect. If an augmented matrix [Ab] had a pivot position in every row, there could be a pivot in the last column which would make it inconsistent.
Option E is correct. If the columns of an m×n matrix A span, then the equation Ax=b is consistent for each b in
Option F is correct. IfA is an m x n matrix whose columns do not span, then the equation Ax = b is inconsistent for some b in
Options B, C, E, and F are correct.