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jeka94
2 years ago
15

(25x2) + (3x10) = ? (25x2) + (3x10) = ?

Mathematics
2 answers:
lidiya [134]2 years ago
7 0
Answer: 80
Explanation: 50+30
ki77a [65]2 years ago
6 0

Answer:

fist 1 is 80 second on is 80

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Someone help please I wi appreciate itttt so much
Dmitry_Shevchenko [17]

Answer:

65

Step-by-step explanation:

66

3 0
3 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
The box plot shows the number of years during which 24 colleges have participated in a local college fair: A boxplot is titled Y
Anna007 [38]

Answer:

its is actually 4

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which expression is equivalent to
djverab [1.8K]

Answer:

3

Step-by-step explanation:

"" = x^(0.5*(-2))*y^(-0.25*(-2))*z^(-2) = x^(-1)*y^(0.5)*z^(-2) =

(1/x^1)*y^(0.5)*(1/z^2) = 3

4 0
3 years ago
Read 2 more answers
There are a total of 5500 people in the stadium consisting of men, women, and children altogether in a swimming pool. There are
Setler79 [48]

Answer:

Men be 500

Women be 1000

And, the children be 4000

Step-by-step explanation:

The computation is shown below:

Let us assume the men be x

So the women be 2x

And, the children be 2x(4) i.e. 8x

Now according to the question

x + 2x +  8x = 5500

11x = 5500

x = 500

Men be 500

Women be 1000

And, the children be 4000

5 0
3 years ago
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