Answer:
The discriminant is 0
Step-by-step explanation:
Since the graph of the quadratic equation has only one x-intercept, we can conclude that the quadratic has only one real root.
If a quadratic equation has only one real root, then the discriminant is 0
If x = -3 is the only x-intercept of the graph of a quadratic equation then the discriminant is 0
Answer:
10
Step-by-step explanation:
We want to find k when y=kx
2y = 20x
Divide each side by 2
2y/2 =20x/2
y = 10x
The constant of proportionality is 10
Answer:
35
Step-by-step explanation:
There are 3 angles in a triangle
∠1 , ∠2 , ∠3
Of which
∠1 = ∠2
∠3 = 110
By angle sum property
∠1 + ∠2 + ∠3 = 180
∠1 + ∠2 = 180-110
∠1 + ∠2 = 70
∠1 = 70 ÷ 2
=35
∠1 = ∠2 = 35
Hence , 35+35+110 = 180
P=1.15(20+0.5x)=23+0.575x
62.1=23+0.575x
0.575x=39.1
x=68
68 pages.
now, as far as the second case....well, sine of anything is within the range of -1 or 1, so -1 < sin(A) < 1
now, we have -2 = sin(A), which simply is out of range for a valid sine, so there's no angle with such sine
so, only the first case are the valid angles for A