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xeze [42]
3 years ago
10

Area of rectangular figures​

Mathematics
1 answer:
iren2701 [21]3 years ago
3 0

Answer:

531 in^2

Step-by-step explanation:

21 x 18 = 378 in^2

17 x 9 = 153 in^2

378 + 153 = 531 in^2

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The test to detect the presence of respiratory syncytial virus is 97% accurate for a person who has the virus and 99% accurate f
Setler79 [48]

Answer:

The probability that a randomly selected person gets incorrect result is 2.2 × 10⁻⁴

Step-by-step explanation:

The parameters given are;

The accuracy of the test for a person who has the respiratory synctial virus = 97%

The accuracy of the test for a person who does not have the respiratory synctial virus = 99%

We have;

a = TP =

b = FP

c = FN

d = TN

a/(a + c) = 0.97

d/(d + b) = 0.99

a/(a + b) = 0.97*0.0055/(0.97*0.0055 + (1 - 0.99)*(1-0.0055))

PPV = 0.349 = 34.9%

Therefore, we have;

a/(a + c) = 0.97 and

a/(a + b)  =  0.349

0.97(a + c) =0.349(a + b)

(0.97 - 0.349)a = 0.349·b - 0.97·c

a = (0.349·b - 0.97·c)0.621

b × (1 - 0.0055) = (1 - 0.97)×(1 - 0.0055)

b = 1 - 0.97 = 0.03

Similarly,

c = 1 - 0.99 = 0.01

The proportion of the population that have false positive and false negative = 0.03 + 0.01 = 0.04 = 4%

The probability that a randomly selected person gets incorrect result = 0.04×0.0055 = 0.00022.

5 0
3 years ago
What is 3/8 inch converted to a decimal.
USPshnik [31]
0.375 is 3/8 converted into a decimal, to get that you just divide 8 by 3.
7 0
3 years ago
Read 2 more answers
a rectangular field is to be covered on three sides leaving a side of length 20m uncovered. if the area of the field is 600m2. h
Leona [35]

Answer:

580m^2

Step-by-step explanation:

600m^2 -20m=580m^2

8 0
3 years ago
What is the correlation? Plz hurry I need help <br> A.positive <br> B.Negative <br> C.Neither
Anna [14]
The correlation is positive
6 0
3 years ago
What type of polynomial is this and what is its degree?<br> 5b3 - 3 + 6b
Dmitry_Shevchenko [17]

Answer:

3rd degree trinomial

Step-by-step explanation:

the highest power is 3 and there are 3 terms so its a 3rd degree trinomial

3 0
3 years ago
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