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Ierofanga [76]
3 years ago
8

Among 143 students with positive test results, there are 24 false positive results; among 157 negative results, there are 3 fals

e negative results. If one of the test subjects is randomly selected, find the probability that the subjects tested positive or used marijuana
Mathematics
1 answer:
Stella [2.4K]3 years ago
6 0

Answer:

the answer would be 300 i think

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What is the axis of symmetry of the function f(x)= -(x+9)(x-21)
Vinil7 [7]

Answer:

The axis of symmetry is x = 6

Step-by-step explanation:

To find this, first find the two x-intercept values and then take the average. This will always be the line of symmetry.

x + 9 = 0

x = -9

x - 21 = 0

x = 21

Now take the average of these two numbers.

(-9 + 21)/2

12/2

6

6 0
3 years ago
Help please last one
Monica [59]
Y=1/2x+8


Step by step explanation This is how I got the answer to your question and I gave you the solution I hope this helps you out
8 0
2 years ago
The whole is 1,000,000 50,000 is what percent of that
Travka [436]
5% is your answer bud
8 0
3 years ago
If sinx=2cosx then, what is the value of sin2x?
Travka [436]
          sin(x) = 2cos(x)
         tan(x) = 2
tan⁻¹[tan(x)] = tan⁻¹(2)
                x ≈ 63.4

sin(2x) = sin[2(63.4)]
sin(2x) = sin(126.8)
sin(2x) ≈ 0.801
3 0
3 years ago
Read 2 more answers
Emily spent £2400 on holiday in 2017.
LekaFEV [45]

Answer:

£1920

Step-by-step explanation:

The amount she spent in 2016 is 20% less than 2017. 20% less than is the same as 80% of the amount she spent in 2017. So, to find how much she spent in 2016, multiply 2400 by 0.80 (the decimal form of 80%):

2400 * 0.8 = 1920

Emily spent £1920 on holiday in 2016.

I hope this helps :)

8 0
2 years ago
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