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Sophie [7]
3 years ago
13

5. At the Copy Center, 19 copies cost $1.14. At that rate, how much will 50 copies

Mathematics
2 answers:
Volgvan3 years ago
6 0
B- $3.00

19/1.14 = .06

.06 x 50 = $3.00
Rom4ik [11]3 years ago
4 0
B. $3.00
Because if you divide 1.14 and 19 you get 0.06 multiply that by 50 you get 3.00
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Anit [1.1K]

Answer:

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Step-by-step explanation:

1. distribute 2 to what is in the parentheses ( you should get x over 3 +10)

2. combine both x over 3

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5 0
3 years ago
What are the coordinates of the midpoint of segment AB with the endpoint A(-3,4) and (5,6)
gayaneshka [121]

Answer:

(1,5)

Step-by-step explanation:

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The midpoint formula:

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3 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.

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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
<span>

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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Ivanshal [37]

Answer:

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Step-by-step explanation:

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3 years ago
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