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yulyashka [42]
3 years ago
9

The temperature outside was -12 °. The temperature dropped 3 degrees. What is the new temperature?

Mathematics
2 answers:
tigry1 [53]3 years ago
5 0

Answer:

-15

Step-by-step explanation:

the new temperature since it went down

-12-3= -15

lawyer [7]3 years ago
4 0

Answer:

-15

Step-by-step explanation:

-12 dropped by 3

-12-3= -15

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Pls help me guys!<br> Thanks =P
Tema [17]
(4*7/2)+(15*7)+(7*6/2) = 140
6 0
2 years ago
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
2 years ago
PART 3 PLZ ANSWER 32 POINTS
balandron [24]

i think you can do this one :    )

6 0
2 years ago
Write 5,482 in expanded form
MakcuM [25]

Answer:

5000 + 400 + 80 + 2

5 0
2 years ago
Read 2 more answers
Giving 20 points for the answer.
solong [7]

Answer:

B, A, C

Step-by-step explanation:

add the like terms together (ending in x2 with x2, ending in x with x etc )

8 0
1 year ago
Read 2 more answers
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