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Soloha48 [4]
3 years ago
13

(Ill give brainliest if u help!)

Mathematics
2 answers:
Monica [59]3 years ago
7 0

Answer:

Answer is D

Step-by-step explanation:

Sophie [7]3 years ago
6 0

Answer:

The answer would be D.

Step-by-step explanation:

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If the public debt of the Apex Union is 7,681,936,174,105,993 apex dollars And it's gross domestic product is 12,379,354,098,603
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Question 19 of 25<br> f(x)=√x-6. Find the inverse of f(x) and its domain.
Gekata [30.6K]

Answer:

f¯¹(x)=x²+12x+36

Step-by-step explanation:

f(x) =  \sqrt{x}  - 6 \\ substitute \: y \: for \: f {}^{ - 1} (x) \\ y =  \sqrt{x}  - 6 \\ interchange \: x \: and \: y \\ x =  \sqrt{y}  - 6 \\ swap \: the \: side \: of \: the \: equation \\  \sqrt{y }  - 6 = x \\ move \: the \: constant \: to \: the \: right \: hand \: side \\   \sqrt{y}  = x + 6 \\ square \: both \: sides \: of \: the \: equation \\ y = x {}^{2}  + 12x + 36 \\ substitute \: f \frac{}{ -1} (x) \: for \: y \\ f {}^{ - 1} (x) = x {}^{2}  + 12x + 36 \\ domain \: x∈R

5 0
2 years ago
A man 2 m high observes the angles of elevation of the rops of house and a window on its sode are 45 and 60 respectively. If the
DiKsa [7]

Answer:

The height of the window = x + 2 = 4.23 + 2= 6.23m

Step-by-step explanation:

The angle of elevation of the top of the house and the window is 60 and 45 degree.

We can proceed as drawing a diagram as a man of height 2m and a building of total height 12m.

  • draw a horizontal line along the height of a man so that it touches building at height 2m
  • till the window height we assume its height as 'x' from the man's height.
  • distance till the top from the window will be 'y'

we don't know the distance between man and the building let it be 'b'

\frac{x}{b}=tan 45 =1

x=b .............(1)

total height of the building is given as 12m

  x + y + 2=12

x + y = 10 .....................(2)

\frac{x+y}{b} =\frac{x+y}{x }  = tan 60

\frac{10}{x} = \sqrt{3}

x = \frac{10}{\sqrt{3} }  ≈ 5.77m

y = 10 -   \frac{10}{\sqrt{3} }

y= 10(1-\frac{1}{\sqrt{3} } ) ≈ 4.23m

The height of the window = x + 2 = 4.23 + 2= 6.23m

4 0
3 years ago
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