If 20 is decreased to 18.6, the decrease is what percent of the original number?
1 answer:
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Given that the volume of a cell is 50 cubic micrometers. It says to find the number of cells present in 1 cubic centimeter.
So we need to first convert the units of volume of a cell, then we can find the total number of cells in 1 cubic centimeter.
We know 1 meter = 100 centimeters = 1000000 micrometers
So 1 centimeter = 10000 micrometers
Taking Cubic powers on both sides :-
1 cubic centimeters = 10¹² cubic micrometers
1 cubic micrometers = 10⁻¹² cubic centimeters
50 cubic micrometers = 50 × 10⁻¹² = 5 × 10⁻¹¹ cubic centimeters
So volume of one cell = 5 × 10⁻¹¹ cubic centimeters
Number of cells = = 2 × 10¹⁰ cells.
So, total number of cells = 2 × 10¹⁰ cells.
-18/3
18/(-3)
<h2>Explanation:</h2>The complete question is as follows:
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Which expression best estimates -18 1/4 divided by 2 2/3?
18/3
-18/3
-18/(-3)
18/(-3)
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So in this exercise, we have two mixed fractions. This type of fractions comes from the combination of a whole number and a proper fraction fraction (numerator less than denominator). In order to solve this problem, we need to transform these mixed fractions into improper fractions (numerator greater than denominator). So:
By dividing:
<em>So the expressions that best estimates -18 1/4 divided by 2 2/3 are:</em>
<em>-18/3 </em>
<em>18/(-3)</em>
<em>Whose value in decimal form is -6.0</em>
<h2 /><h2>Learn more:</h2>Estimate the distance between cities: brainly.com/question/12062666
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