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Molodets [167]
2 years ago
6

A test to detect an infection gives a positive result 98% of the time if a person is infected. It is 97% accurate for people who

are not infected. % of results will be false negatives, and % of results will be false positives.
Mathematics
1 answer:
Rama09 [41]2 years ago
6 0
If the test gives a positive result for an infected person 98% of the time, that means that 2% of the time, it gives a negative result for an infected person, which would be a false negative.

If the test is 97% accurate for non-infected people, that means that it gives a negative result 97% of the time. So a positive result will be given 3% of the time for non-infected people, which is a false positive. 
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I need help plz help
amid [387]

We know

\boxed{\sf cos\Theta=\dfrac{b}{h}}

\\ \sf\longmapsto cos22=\dfrac{x}{47}

\\ \sf\longmapsto 0.9=\dfrac{x}{47}

\\ \sf\longmapsto x=47(0.9)

\\ \sf\longmapsto x=42.3

7 0
3 years ago
The Gaineys and the Arnolds are saving money for a trip to Utah to go snowboarding. The Arnolds are going to save a nickel on th
natali 33 [55]

Answer: see Explanation

Step-by-step explanation:

THE GAINEY'S:

Recursive Formula :

A1 = $10

An = An-1 + $10

A2 = $10 + $10 = $20

Where n = day of the month

Explicit formula :

y = a + b(c - 1)

WHERE:

y = final amount

initial amount = a

Increment on initial amount = b

Day of the month = c

THE ARNOLD'S :

Recursive formula:

First day of the month (A1) = $10

An = 2(An-1)

A2 = 2(A1) = 2(10) = $20

A3 = 2(A2) = 2(20) =$40

Explicit formula:

y = a(b)^c

Where :

y = final amount

initial amount = a

Increment on initial amount = b

Day of the month = c

5 0
3 years ago
Which is greater 3/5, 33/50, 303/500, 3,003/5,000, 30,003/50,000
ad-work [718]

33/50 because it is biggest

5 0
3 years ago
Read 2 more answers
For how many values of x does the graph f(x)= x^2 -3 intersects the x-axis?
anzhelika [568]

Answer:

cocomelon . 3/5 - 4

Step-by-step explanation:

6 0
1 year ago
Read 2 more answers
The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and
lawyer [7]

Functions can be used to model real life situations.

The hose is 3.2 feet above the ground, at a horizontal distance of 4 fee

The function is given as:

f(x) =-0.3x^2 + 2x

At a horizontal distance of 4 feet, the value of x is 4

i.e. x = 4

Substitute 4 for x in f(x).

So, we have:

f(4) =-0.3(4)^2 + 2(4)

Evaluate the exponent

f(4) =-0.3(16) + 2(4)

Open both brackets

f(4) =-4.8 + 8

Add -4.8 and 8

f(4) =3.2

Hence, the hose is 3.2 feet above the ground

Read more about functions at:

brainly.com/question/10837575

7 0
2 years ago
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