9 squares because if there are 18 triangles in it then you divide 18 by 2 and get 9
That would be 4
Hope it helps!!
Answer:
Hyperbola.
Step-by-step explanation:
We start from the function:

We may get the traces if we cut the surface in planes x=k. This is equivalent to replace x for k:

The last equation is the equation of an hyperbola, which varies its characteristics depending on K (the plane cut).
Step-by-step explanation:
1) 2x+3y-3y=1-3y. -x+2y= -4
2x/2=1-3y/2. -(1-3y/2)=-4
x=1-3y/2. -1+3y/2= -4
x=1-3(-2)/2 3y/2= -4+1
x=1+6/2 3y/2×2/3= -3×2/3
x=7/2 y= -2
S.s{ 7/3,-2}
2). -4x-6y+6y=7-6y. 4x+y= -2
-4x/-4=7-6y/-4. 4(-7-6y/4)+y= -2
x= -7-6y/4. -7-6y+y = -2
x= -7-6/4 -5y/5= 5/5
x=-13/4 y= 1
S.s { -13/4, 1 }
Answer:
The birth weight associated with the lowest 1% is 4.6 pounds.
Step-by-step explanation:
Let <em>X</em> represent the birth weights of babies.
It is provided that 
It is also provided that many pre-mature births weights are in the lowest 1% of births.
Let <em>x</em> represent the births weights that are in the lowest 1% of births.
That is, P (X < x) = 0.01.
⇒ P (Z < z) = 0.01
The corresponding <em>z</em>-score is, <em>z</em> = -2.33.
Compute the value of <em>x</em> as follows:

Thus, the birth weight associated with the lowest 1% is 4.6 pounds.