A building with a height of 14 m casts a shadow that is 16 m long while a taller building casts a 24 m long shadow. What is the
2 answers:
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ANSWER
EXPLANATION
The given function is
Let us split the middle term to get,
We factor to obtain,
Let us find the zeros of f(x),
Either
We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.
This gives us,
Hence the axis of symmetry of the parabola has equation,
Since the given function has minimum turning point, it will decrease and then increase.
The function will be increasing for
The function will be increasing and positive for
EXPLANATION
The given function is
Let us split the middle term to get,
We factor to obtain,
Let us find the zeros of f(x),
Either
We need to find the x-value of the vertex, which is the midpoint of the x-intercepts.
This gives us,
Hence the axis of symmetry of the parabola has equation,
Since the given function has minimum turning point, it will decrease and then increase.
The function will be increasing for
The function will be increasing and positive for
If FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².
Area of a circle:
A = π r²
r = 1 /2 of diameter.
FE is the diameter
r = 20 / 2
r = 10 cm
Area of circle using FE:
A = π ( 10 )² = π × 100 = 314 cm²
BE is a radius:
Area = π × 3.5² = π × 12.25 = 38.465
A = 38.5 cm²
AB is a radius:
Area = π × 11²
A = π × 121
A = 379.94 = 380 cm²
EF is a diameter:
r = 12 / 2 = 6 cm
Area = π × 6²
A = π × 36
A = 113.04 = 113 cm²
Therefore, if FE measures 20 cm, then the area is 314 cm², if BE measure 3.5 cm, then the area is 38.5 cm², if AB measures 11 cm, then the area is 380 cm² and is EF measures 12 cm, then the area is 113 cm².
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Your question was incomplete, Please refer the content below:
1) if FE measures 20 centimeters, the approximate area of circle B is what?
2) if BE measures 3.5 centimeters, the approximate area of circle B is what?
3) if AB measures eleven centimeters, the approximate area of circle B is what
4) If EF measures twelve centimeters, the approximate area of circle B is what?
