When multiplying and dividing two numbers in scientific notation, why do u sometimes have to rewrite one factor ?

Mathematics

2 answers:

Free_Kalibri [48]3 years ago

8 0

Answer:You have to rewrite it just in case the lead number isn’t a 1 or a 10

Step-by-step explanation:

zalisa [80]3 years ago

5 0

You sometimes need to rewrite a factor because the lead number is not between 1 and 10 as it needs to be in scientific notation. For instance, if we had lead numbers of 2 and 5, as we do in the following problem.

2x10^3 * 5x10^9

Then we get the answer of 10x10^12. We need to adjust this by moving the decimal place and increasing the exponent by 1. The correct answer would be 1x10^13 instead.

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Line a is perpendicular to line b. if the slope of line a is 1/8, what is the slope of line b

jenyasd209 [6]

Answer:

-8/1

Step-by-step explanation:

Perpendicular lines have opposite slopes., meaning the signs are opposite, and the numerator and denominator are flipped.

Here's another example:

If line a had a slope of 4/5, line b would have a slope of -5/4, if the lines are perpendicular.

8 0

2 years ago

Which expression is equivalent