Answer: 1: 3x(x+2)(x-2) 2: (x+3) square - (x-2) squaRe
Answer:
(221.39, 300.61) and (255.2223, 266.7777)
Step-by-step explanation:
Given that X, the lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days and a standard deviation of 17 days
Middle 98% would lie on either side of the mean with probability ±2.33 in the std normal distribution on either side of 0
Corresponding we have x scores as
Between 
and 
i.e. in the interval = (221.39, 300.61)
If sample size = 47, then std error of sample would be
So 98% of pregnancies would lie between
and 
= (255.2223, 266.7777)
In this problem it
states that one tenth or only 10% is Canada’s population to the United States.
Hence with the steps we
can identify the population of the United States.
<span><span>1.
</span>10 %
= 32 million or 0.1 = 32 million</span>
<span><span>2.
</span>Then 32
million / 0.1 = 320, 000, 000 million</span>
Therefore there are 320,
000, 000 million living in the United States
Adding one zero. Why the zeroes? It is
the result because of the power of 10 in a hundred percent population coming
from the Canada’s population. Take note that 100% = 320, 000, 000 million of
the USA while 10% of it is Canada so we divide it by 0.1 which is 32, 000, 000
(the power of ten)
Take the total and divide by the amount to get answer.
3.60 /3 = $1.20 per pound
Answer:
it has a lower mass/volume ratio
Step-by-step explanation:
Density is the ratio of mass to volume. An elevator will have the same volume, regardless of the number of people. The mass will increase with the number of people.
An elevator with 50 people in it will have a higher mass/volume ratio than an elevator with 3 people in it. Hence the latter is less dense.
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<em>Additional comment</em>
50 persons would require an industrial elevator of perhaps 10,000 pound load capacity. There might be safety issues with carrying that many people.
