Which number is the best estimate of 866,214,000,000? 9 ×

8 ×

10 ×
× 10

Using rounding and scientific notation, it is found that the best estimate of 866,214,000,000 is:

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Which is the first option.

A similar problem is given at link

9 × 10^11

Step-by-step explanation:

An index number is simply referred to a number that is being raised to a particular power or index which tells us the amount of times the number will be multiplied by itself. An example is 10³ which means we have to multiply 10 thrice and this will be:

= 10 × 10 × 10

= 1000

For 866,214,000,000, this can be expressed as:

= 8.66214 × 10^11

We should note that 8.66214 can be changed to the nearest whole number which will be approximated to 9.

Therefore, the answer will be:

= 9 × 10^11

180

step-by-step explanation:

the camry sales+accord sale=828,000. to make it so the two numbers are 18 thousand apart and still equal 828,000, you first need to find out what half of 828,000 is. 828,000/2=414,000. for the two numbers to equal 828,000, you have to add the same amount as you subtract from the middle. in this case, the number is 9,000 because it's half of 18,000. to equal 828,000, you have to add 9,000 to 414,000 for the camry and subtract 9,000 from 414,000 for the accord. 414,000+9,000=423,000.

414,000-9,000=405,000.

423,000+405,000=828,000.

423,000-405,000=18,

hope it