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poizon [28]
3 years ago
13

Explain the survival of the fittest.

Mathematics
1 answer:
yan [13]3 years ago
4 0

Answer:

<em>Survival of the Fittest</em>

  1. There has been gradual evolution of life forms with new forms arising at different periods of history. Any population has built-in variations in characteristics which adapt it better to environment.
  2. The characteristics which enable some population or individuals to survive better in natural conditions (climate, food, physical factors) would out-breed others (Survival of the fittest).
  3. Adaptability is inherited and fitness is the end result of ability to adapt and get selected by nature.
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Jenny is on the local swim team for the summer and has swim practice four days per week. The schedule is the same each day. The
asambeis [7]

Answer:

1 hour each morning

Step-by-step explanation:

4 times a week

2 hours in afternoon

12 hours per week

4x2=8

12-8=4

4 divided by 4 = 1

Check my work:

1 hour each morning

total of 3 hours a day

4x3=12

3 0
3 years ago
Read 2 more answers
Three more than the products of a number and 7 is equal to 6
Lemur [1.5K]

Answer:

25

Step-by-step explanation:

5 0
3 years ago
A random sample of 1000 people was taken. Four hundred fifty of the people in the sample favored Candidate A. The 95% confidence
KatRina [158]

Answer:

The 95% confidence interval would be given (0.419;0.481).

Step-by-step explanation:

Data given and notation  

n=1000 represent the random sample taken    

X=450 represent the people in the sample favored Candidate A

\hat p=\frac{450}{1000}=0.45 estimated proportion of people in the sample favored Candidate A  

\alpha=0.05 represent the significance level

Confidence =0.95 or 95%

p= population proportion of people in the sample favored Candidate A

Solution to the problem

The confidence interval would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 95% confidence interval the value of \alpha=1-0.5=0.05 and \alpha/2=0.025, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=1.96

And replacing into the confidence interval formula we got:

0.45 - 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.419

0.45 + 1.96 \sqrt{\frac{0.45(1-0.45)}{1000}}=0.481

And the 95% confidence interval would be given (0.419;0.481).

We are confident (95%) that about 41.9% to 48.1% of the people are favored Candidate A.  

3 0
3 years ago
If PA = 6, PD = 4 and BE = 5. Find PE <br> A) 4<br> B) 5<br> C) 6
lana [24]

Answer:

Option A) 4

Step-by-step explanation:

we know that

Applying the <u>Intersecting Secant-Tangent Theorem</u>

PA^{2}=(BE+PE)( PE)

substitute the given values

6^{2}=(5+PE)( PE)\\ \\36=PE^{2}+5PE\\ \\PE^{2}+5PE-36=0

Solve the quadratic equation by graphing

The solution is PE=4 units

see the attached figure

4 0
3 years ago
The length of a square is 6 2/3 inches. What is the Perimeter of the square?
Kruka [31]

Answer:

<u><em>26 2/3 inches</em></u>

Step-by-step explanation:

<em><u>P=4s</u></em>

P= 4 × 6 2/3

P= <em><u>26 2/3 inches</u></em>

3 0
3 years ago
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