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Lady bird [3.3K]
3 years ago
9

solve the following: all fractions should be reduced to lowest terms and mixed numbers. -1 1/4 x (-2/5)=

Mathematics
2 answers:
tigry1 [53]3 years ago
8 0
Convert -1 1/4 to the mixed number -5/4.

Then the product of -1 1/4 and -2/5 is   (-5/4)(-2/5) = 10/20, or 1/2.

Please, do not use " x " to indicate multiplication.  " x " is reserved for naming variables.  Instead, use " * " to indicate mult.

Thus, your problem is best written    -1 1/4  *  -2/5
marysya [2.9K]3 years ago
3 0
-1 1/4 * (-2/5) =

= -5/4 * (-2/5)

= 10/20

= 1/2
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Express 78 billion in scientific notation
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Answer:

7.8 * 10^{10} is scientific notation of 78 billion

Step-by-step explanation:

For scientific notation , follow the following notation:

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In standard form

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or

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7.8 * 10^{10} is scientific notation of 78 billion

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