Measure = 1/2 (120-30)
1/2(90)
45
Answer = 45°
B. 3m+4 and m+4+2m
3(1)+4 (1)+4+2(1)
3+4 5+2
7 7
3(4)+4 (4)+4+2(4)
12+4 8+8
16 16
Answer:
-2/f for the first one, and 1/f is the second one!
QUESTION 1
The given equation is
We rewrite in the form,
This implies that,
We can use the determinant to find the number of solutions without necessarily solving the equation.
Since the determinant is negative the equation
has no solution.
QUESTION 2
The given equation is
Since the determinant is positive, the equation
has two solutions.
QUESTION 3
The given equation is
This implies that,
The determinant is
Since the determinant is negative, the equation
has no solution.
QUESTION 4
The given equation is
We rewrite to obtain,
The determinant is
Since the determinant is positive the equation
has two solutions.
QUESTION 5
The given equation is
We rewrite to obtain,
We substitute in the determinant formula to obtain,
.
Since the determinant is zero the equation
has only one root.
I think the rule is -9
10 - 1= 9
12-3= 9
15-6=9