Answer:
Step-by-step explanation:
(a + b)² =a² + 2ab + b²
(a -b)² = a² - 2ab + b²
1) y = (x -1)²
y= x² - 2*x*1 + 1
y = x² - 2x + 1
Ans: C
2)y = (x +4)² + 5
y = x² +2*x*4 + 4² + 5
= x² + 8x + 16 + 5
y = x² + 8x + 21
C
3) y = -(x + 9)²- 10
y = - [x² + 18x + 81] - 10
= -x² - 18x - 81 - 10
y =-x² - 18x - 91
B
4) y = 3(x + 2)² - 18
y =3 [x² + 4x + 4] - 18
y = 3x² + 12x + 12 - 18
y =3x² + 12x - 6
A
5) y = -2(x + 1)² - 16
= -2[x² + 2x + 1] -16
= -2x² - 4x - 2 - 16
y = -2x² - 4x - 18
A
6) y = 5(x + 5)²
=5[x²+ 10x + 25]
y = 5x² +50x + 125
A
7)y = (1/2)(x + 8)² - 8
y = (1/2) (x² + 16x + 64) - 8
A
8) y = (x + 3/2)² + 3/4
C
9) y = 2[x² + 16x + 64] - 5x
y = 2x² + 32x + 64 - 5x
y =2x² + 27x + 6
Answer:
7.08
Step-by-step explanation:
think of it as
A. 7.020
B. 7.064
C. 7.072
D. 7.080
Answer:
73.2 ft is the man from the base of the bridge tower.
Step-by-step explanation:
By using the trignometric property
As given
A bird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground).
The angle of depression from the bird is 26 ̊.
Base = Height of bridge tower - Height of man
AB = AC - DE
= 200 ft - 50 ft
= 150 ft
BE = Perpendicular
Putting all the values in the trignometric property
BE = 150 × 0.488
BE = 73.2 ft
Therefore 73.2 ft is the man from the base of the bridge tower.
It is -1.0 cause im a smart chicky nuggy