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Mashutka [201]
2 years ago
6

What is the inverse of f(x)=2-2x

Mathematics
1 answer:
juin [17]2 years ago
6 0
In the usual sense, it has no inverse function. Since it is not an injection (f(0)=f(2)=0), an inverse function would have to map 0 both to 0 and 2, and that’s impossible.

However, if you restrict the domain to [1,+oo> (to make it injective), and the codomain to [-1,+oo> (to make it surjective), then it has an inverse function, given by g(y)=1+sqrt(y+1).
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If two similar triangles have sides in the ratio a : b, then their areas are in the ratio a² : b².

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54:18=\dfrac{54}{18}=3:1

Area of the smaler triangle = x

Area of the larger triangle = 567 cm²

Therefore we have the equation:

567:x=3^2:1^2\\\\\dfrac{567}{x}=\dfrac{9}{1}\qquad|\text{cross multiply}\\\\9x=567\qquad|\text{divide both sides by 9}\\\\x=63

<h3>Answer: C. 63 cm²</h3>
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Answer:

Step-by-step explanation:

Bob ran the first part of a 12 km race at a speed of 8 kmph. He ran the second part of the

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The volume of a cylinder is 1.54 litre. If the height is 20 cm ​
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Answer:

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Volume = πr^2h so:

1540 =  π*r^2*20

r^2 = 1540/20 π = 24.510

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