Answer:
a) 
b) 25
Step-by-step explanation:
a) The quadratic formula is 
.
The portion under the radical sign () is called the discriminant or determinant.
It tells us that, the quadratic equation can be solved by factoring, if its value is a perfect square.
b) The given quadratic equation is 
.
By comparing to 
, we have a=2, b=7, and c=3
We substitute these values to get:
Answer:
The hypotenuse is the longest side of the triangle.
You need to add 37+12.
That is 49.
That is not in the menu.
Answer: B
Step-by-step explanation:
The area of the entire rectangle is (10+30)(15+10) = 1000, and the area of region II is (30)(15)=450. Hence, the desired probability is 450/1000 = 45%.
Sum of angles of a linear pair = 180. So angle with measurement 142 and the adjacent angle to it have a sum = 180.
THerefore 142+y=180
Subtracting 142 from both sides
y = 38
Now in the down right sides corner triangle
38+49+w=180
87+w=180
Subtracting 80 from both sides,
w = 93
So the measurement of angle w = 93 .
