Answer:
rotation
Step-by-step explanation:
Answer:
6ft tall
Step-by-step explanation:
Given we know that the scale is 1 in 2ft.
Using this information we know we could divide 12/2=6. We also know that we could multiply 2×6=12. Therefore, we know that the model plane is 6ft tall.
I hope this helps!
Answer: Ф = 20
Step-by-step explanation:
sin2Ф = cos (Ф+ 30 )
if sinα = cosβ , then α and β are complementary ,that is they add up to be 
.
Therefore : 2Ф + Ф + 30 = 90
3Ф + 30 = 90
3Ф = 90 - 30
3Ф = 60
Ф = 20
Decimal:
1.1875
<><><>
By whole number do you mean improper fraction?? If so-
<><><>
Improper fraction:
19/16
We are given the function <span>x^2+8x+4y+4=0. To determine the characteristics of this function, we need to write it in the standard form as follows:
</span><span>x^2+8x+4y+4=0
4y = -x^2 - 8x - 4
y = (-1/4)x^2 - 2x - 1
To determine the vertex and the focus of the parabola, we write it in the form </span>(y+k)^2 = x+h by completing the square method.
y + 1 = (-1/4)x^2 - 2x
y +1 = (-1/4)(x^2 + x/2)
y +1 - 1/64 = (-1/4)(x^2 + x/2 + 1/16)
y + 15/16 = (-1/4) (x + 1/4)^2
The vertex would be at point ( -1/4, -15/16)
The focus would be determined as follows:
<span>4p=-1/4 so p=-1/8
focus = (-1/4+(-1/8),-15/16) = (-3/8,-15/16)
Directrix = </span><span>x = h - p
x = -1/4 - -1/8 = -1/8 </span>
