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1 answer:
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Because Z is directly proportional to X and inversely proportional to Y, therefore
When X=10 and Y=4, Z=47.5.
Therefore
k(10/4) = 47.5
2.5k = 47.5
k = 19.
That is,
When X=13 and Y=10, obtain
Z = (19*13)/10 = 24.7
Answer: 24.7
When X=10 and Y=4, Z=47.5.
Therefore
k(10/4) = 47.5
2.5k = 47.5
k = 19.
That is,
When X=13 and Y=10, obtain
Z = (19*13)/10 = 24.7
Answer: 24.7
The force exerted on victim is 20 newton
<em><u>Solution:</u></em>
An attacker swings a board with a mass of 2 kg toward a victim
The acceleration is 10 when the board hits the victim
To find: Force exerted on victim
<em><u>The force is given by formula:</u></em>
From given,
<em><u>Substituting the values in formula,</u></em>
Thus force exerted on victim is 20 newton
Answer: 151
Step-by-step explanation:
if prior population proportion is unknown , then the formula is used to find the sample size :
, where = Two tailed critical value for significance level of
E = Margin of error.
Given : margin of error = 8%= .08
For 95% confidence level , two tailed critical value = 1.96
Now, the required sample size :
Hence, the size of the sample needed = 151.