Answer:
A
Step-by-step explanation:
Refer to the picture above.
Explainations are written in the pic above.
Simplify. x+5/x^2+6x+5
2 answers:
Answer:
The correct option is 2.
Step-by-step explanation:
The given rational expression is
Factorize the denominator.
The middle term can be written as 5x+x.
Cancel out the common factors.
The simplified form of the given expression is . The factors of the denominator are (x+5) and (x+1), it means at x=-5 and x=-1, the value of denominator is zero.
The given expression is not defined for x=-1 and x=-5.
Therefore the correct option is 2.
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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.