So after every 2 hours the bacteria's numbers double (or 100% is "added") so we can simplify 12 down to 6 because we only want the number after every two hours, 400+800+1600+3200+ 6400+ 12800 = 25200 total after 12 hours
This is the concept of arithmetic. To calculate the percentage of time life has existed we proceed as follows;
According to history:
The age of earth is 4.6 billion years
the age of life is as it appeared from unicellular is 3.8 billion years.
thus the percentage of the above will be:
3.8/4.6 x 100
=0.82609x100
=82.609%
Answer:
x=−11
Step-by-step explanation:
7+5(x−3)=7(x+2)
Step 1: Simplify both sides of the equation.
7+5(x−3)=7(x+2)
7+(5)(x)+(5)(−3)=(7)(x)+(7)(2)(Distribute)
7+5x+−15=7x+14
(5x)+(7+−15)=7x+14(Combine Like Terms)
5x+−8=7x+14
5x−8=7x+14
Step 2: Subtract 7x from both sides.
5x−8−7x=7x+14−7x
−2x−8=14
Step 3: Add 8 to both sides.
−2x−8+8=14+8
−2x=22
Step 4: Divide both sides by -2.
−2x
−2
=
22
−2
x=−11
Answer:
3/4
Step-by-step explanation:
AD/YU = √18 / 32 = √9/16 = 3/4
Answer:
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Step-by-step explanation: