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Lyrx [107]
3 years ago
14

Problem is Sin38-cos52

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0
Notice that 38 and 52 make a total of 90
sinA=cos(90-A)
sin38=cos52, therefore the answer is zero
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sesenic [268]
Choice 1. f(5)=5-3 which equals 2
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1 year ago
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2 years ago
A new medical test provides a false positive result for hepatitis 2% of the time that is a perfectly healthy subject being teste
Oxana [17]
Given that X <span>be the number of subjects who test positive for the disease out of the 30 healthy subjects used for the test.

The probability of success, i.e. the probability that a healthy subject tests positive is given as 2% = 0.02


Part A:

</span><span>The probability that all 30 subjects will appropriately test as not being infected, that is the probability that none of the healthy subjects will test positive is given by:

</span>P(X)={ ^nC_xp^x(1-p)^{n-x}} \\  \\ P(0)={ ^{30}C_0(0.02)^0(1-0.02)^{30-0}} \\  \\ =1(1)(0.98)^{30}=0.5455
<span>

Part B:

The mean of a binomial distribution is given by

</span>\mu=np \\  \\ =30(0.02) \\  \\ =0.6
<span>
The standard deviation is given by:

</span>\sigma=\sqrt{np(1-p)} \\ \\ =\sqrt{30(0.02)(1-0.02)} \\ \\ =\sqrt{30(0.02)(0.98)}=\sqrt{0.588} \\  \\ =0.7668
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Part C:

This test will not be a trusted test in the field of medicine as it has a standard deviation higher than the mean. The testing method will not be consistent in determining the infection of hepatitis.</span>
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3 years ago
What is the gcf of 92 and 100
Elena-2011 [213]
92= \textcircled{2} \times \textcircled{2} \times 23 \\&#10;100=\textcircled{2} \times \textcircled{2} \times 5 \times 5 \\ \\&#10;GCF(92,100)=\textcircled{2} \times \textcircled{2} =4

The GCF of 92 and 100 is 4.
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Answer:

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Step-by-step explanation:

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