Answer:
19.
h=0, the result is 1000×2⁰ = 1000
this is the population of bacteria the excitement started with at the very beginning.
h=-3, the result is 1000×2-³ = 1000/(2³) = 1000/8 = 125
this is a calculation 3 hours backwards from the very start of the experiment, saying that if we started the experiment 3 hours earlier, this would have had to be the starting population of the bacteria so we would arrive at the same amount of population at any given time (value of h).
20.
D 25x⁶
Step-by-step explanation:
for 19 there is not more explanation. it is all ashtray in the answer.
for 20 we see that we are dealing with a square, so ask 4 sides have the same length.
one side is 5x³.
the area of a square is simply side².
so, here (5x³)² = 25x⁶
Answer:
A/.......................
Step-by-step explanation:
To find the area of a square you multiply length x width or side x side.
So... 0.2x0.2 = 0.04; b^3 x b^3 = b^6 and m^4 x m^4 = m^8;
Putting everything back together you get.....0.04 b^6m^8
A sphere? You know this isn't really a mathematical question right?
Answer:
The speed of marathon is 20.038 mile per hours
Step-by-step explanation:
Given as :
The distance of marathon = 26.2 miles
The time recorded for marathon = 1 hour 18 minutes and 27 seconds
So, The total time =
Or , Total time = 1.3075 hours
Let The speed in marathon = x mph
So, Distance = Speed × Time
Or, 26.2 miles = x × 1.3075
Or, x = mile per hour
Or , x = 20.038 mph
Hence The speed of marathon is 20.038 mile per hours Answer