2 years ago

What's the difference?

2 answers:

3 0

In -2x $x^{2}$ , the exponent will be dealt with first. With (-2x) $^{2}$ , the multiplication is going to be done first. This is determined because of Order of operations.

galina1969 [7]2 years ago

3 0

All I know is
(-2x)2= 4x
-2x2= -4x

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The ratio of the number of fiction book is 9:4, the different between the number of fiction and non fiction is 245

Evgesh-ka [11]

Answer:

Step-by-step explanation:

The ratio of the number of fiction books is 9:4

the difference between the number of fiction and nonfictionn is 245

so if the number of fiction books = 9x

then the number of nonfiction books = 4x

then difference = 9x-4x = 5x

the difference is given 245

then 5x= 245

x= $\frac{245}{5}$ =49

number of fiction books =49×9=441

number of nonfiction books =49×4=196

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Step-by-step explanation:

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