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katrin2010 [14]
3 years ago
10

Hey can you please help me posted picture of question

Mathematics
1 answer:
ZanzabumX [31]3 years ago
7 0
The correct answer is option A.

One way to check if a function is inverse of the other is to take their composition. The composition of two inverse functions will always result in x.

F(x) = x-2 \\  \\ 
F^{-1}(x)=x+2 \\  \\ 
F(F^{-1}(x)) = F(x+2) \\  \\ 
F(F^{-1}(x)) = (x+2) -2 = x


Thus x - 2 and x + 2 are the inverse of each other.
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in the bag, there are certain number of toy- blocks with alphabets A,B,C and D written on them. The ratio of blocks A:B:C:D is 4
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Let us consider the common ratio to be ‘x’.

So, toy blocks with alphabet A is 4x and

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Again, the number of ‘A’ blocks is 50 more than the number of ‘C’ blocks.

As no. of ‘A’ and ‘C’ blocks are 4x and 3x respectively.

So,

4x=50 + 3x

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Thus, the number of ‘B’ blocks is 7x = 7(50) = 350

350 is the required number.
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