Question 7 is a, multiply ever number by 5
question 8 is also a, multiply every number by -2
The two angles together form a straight angle, i.e. an angle of 180 degrees. This means that
Sum like terms:
Subtract 27 from both sides:
Divide both sides by 9:
For number 1. it is wrong. It is fresh water. Ocean water is salt water. I don't know the rest, sorry. I will come back if I find out though! :D
Answer:
Step-by-step explanation:
<u>Eigenvalues of a Matrix</u>
Given a matrix A, the eigenvalues of A, called are scalars who comply with the relation:
Where I is the identity matrix
The matrix is given as
Set up the equation to solve
Expanding the determinant
Operating Rearranging
Factoring
Solving, we have the eigenvalues
Answer:
The graph crosses the x-axis at x = 0 and touches the x-axis at x = 3.
Step-by-step explanation:
When you graph this equation, you should see the zeros it passes and touches.