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ANEK [815]
3 years ago
14

The equation below shows the relationship between the temperature in degrees Celsius, C, and degrees Fahrenheit, F:

Mathematics
2 answers:
34kurt3 years ago
5 0

it is the last option C=5/9(F-32)

Tasya [4]3 years ago
4 0

Answer:

option (D) is correct.

formula that solves for C is  C=\frac{5(F-32)}{9}

Step-by-step explanation:

Given :  the relationship between the temperature in degrees Celsius, C, and degrees Fahrenheit, F as ,  F=\frac{9}{5}C+32

We have to find the correct formula that solve for C,

Consider the given formula,

F=\frac{9}{5}C+32

We have to find formula for C,

Thus, first subtract 32 both side, we get,

F-32=\frac{9}{5}C

Now, multiply  5 both side, we get,

5(F-32)={9}C

Now , divide both side by 9, we get,

\frac{5(F-32)}{9}=C

Thus, formula that solves for C is  C=\frac{5(F-32)}{9}

Thus, option (D) is correct.

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so it would become 3 : 4 
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1/12 x

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6 0
1 year ago
A new screening test for Lyme disease is developed for use in the general population. The sensitivity and specificity of the new
Anit [1.1K]

Answer:

predictive value of a positive test = 18.18%

predictive value of a negative test = 94.03%

Step-by-step explanation:

Sensitivity = 60% = 0.6

Specificity = 70% = 0.7

Let True Positive = TP

True Negative = TN

False Negative = FN

Sensitivity = \frac{TP}{TP + FN} \\0.6 = \frac{TP}{TP + FN} \\0.6TP + 0.6FN = TP\\0.4TP = 0.6FN\\TP = 1.5 FN

Specificity = \frac{TN}{TN + FP} \\0.7 = \frac{TN}{TN + FP} \\0.7TN + 0.7FP = TN\\0.7FP = 0.3 TN\\TN  = 7/3 FP

Prevalence = 10% = 0.1

Three hundred people are screened, T_{total} = 300

Total number of people having the disease, T_{disease} = ?

Prevalence = \frac{T_{disease} }{T_{total} } \\0.1 =  \frac{T_{disease} }{300 }\\T_{disease} = 30

T_{disease} = TP + FN\\30 = TP + FN

But TP = 1.5 FN

30 = 1.5 FN + FN

30 = 2.5 FN

FN = 30/2.5

FN = 12

TP = 1.5 FN = 1.5 * 12

TP = 18

FP + TN = T_{total} - T_{disease} \\FP + TN = 300 - 30\\FP + TN = 270\\FP + \frac{7}{3} FP = 270\\\frac{10}{3} FP = 270\\FP = 27 * 3\\FP = 81

81 + TN = 270

TN = 189

To calculate the Predictive value of positive test (PPT)

PPT = \frac{TP}{TP + FP} * 100\\PPT = \frac{18}{18+81} * 100\\PPT = \frac{18}{99} * 100\\PPT = 18.18 \%

To calculate the Predictive value of negative test (PNT)

PPT = \frac{TN}{FN + TN} * 100\\PPT = \frac{189}{189+12} * 100\\PPT = \frac{189}{201} * 100\\PPT = 94.03 \%

7 0
3 years ago
Please help!!!
Nonamiya [84]

Answer:

I belive it would be 1/5. ;;;

4 0
3 years ago
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