Step-by-step explanation:
By Descrates' Rule of Signs,
x² + 99x + 127 changes sign 0 times.
Hence it has 0 positive roots.
Since the discriminant b² - 4ac is also positive, there are 2 real distinct roots.
Hence both the roots are negative. (B)
Answer:
None of the above ? （the equation should be y=12）
Step-by-step explanation:
the line parallel to line y=40-1=39 means it's a horizontal line. Which means it's y coordinate is also a constant. Since it pass through （2,12）,it means the constant of y is 12.
Answer:
no
Step-by-step explanation:
you would get this: 149054.555556
Answer:
-42
Step-by-step explanation:
=> (-6)(-7)(-1)
=> (42)(-1)
=> -42
Answer:
1) 
.
2) 
3) 
4) 
5) 
6) 
7) 
8) 
Step-by-step explanation:
In the given number lines, rightarrows represent positive integers and leftarrows represent negative integers.
1)
In first number line we have two rightarrows.
Rightarrow from 0-4 = 4
Rightarrow from 4-9 = 5
So, required sum is .
Similarly,
2)
3)
4)
5)
6)
7)
8)
