Answer: - 6
Step-by-step explanationf
(
x
)
=
−
4
x
+
2
g
(
x
)
=
√
x
−
8
[
f
o
g
]
(
x
)
=
f
(
g
(
x
)
)
=
f
(
√
x
−
8
)
=
−
4
√
x
−
8
+
2
Therefore,
[
f
o
g
]
(
12
)
=
−
4
√
12
−
8
+
2
=
−
4
⋅
2
+
2
=
−
6
1.5 * 8/5 = 0.3*8 = 2.4
2.5 * 8/5 = 0.5*8 = 4.0
Answer:
C. 28 = (2x - 1)(x)
Step-by-step explanation:
Given :
There is a rectangular swimming pool.
Width of swimming pool is x
Length is one less than twice the width
Area of the swimming pool is 28 sq ft.
To Find : Equation could be used to model the area of the swimming pool.
Solution:
Since we are given that Length is one less than twice the width.
And width is x (given)
So, length = 2x-1
Area of the swimming pool is 28 sq ft.
Now ,
Formula of area of rectangle : Length*Width
⇒28= (2x-1)(x)
So, equation used to model the area of the swimming pool: 28= (2x-1)(x)
Hence Option c is correct.
B: √3 ≈ 1.7
Hope this helps
64 feet^2 because the area of a square is one side multiplied by itself, and 8 x 8 is 64