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3 years ago

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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

1 answer:

Stella [2.4K]3 years ago

6 0

Answer:

the answer would be 300 i think

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State the solution of the system of linear equation using its grap<br> 6.<br> SOLUTION: (<br> -2

IRINA_888 [86]

Answer:

Solution is (2, -1)

Step-by-step explanation:

The lines cross at the point where x = 2 and y = -1.

3 0

3 years ago

What is the answer someone help please

Maru [420]

166.25 thats the answer

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3 years ago

Find the value of k if the distance between (2,k) and (6,7) is 4√2 unit

andreyandreev [35.5K]

Answer:

k = 3

Step-by-step explanation:

We have the distance formula: $d = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}$ . We can plug in $4\sqrt{2}$ = d, x2 = 6, x1=2, y2 = 7, y1 = k.

Then, we can solve the question using some algebra to find that k = 3.

Edit: Here is a step by step:

$4\sqrt{2} = \sqrt{(6-2)^2 + (7-k)^2}\\$

$(4\sqrt{2})^2 = (6-2)^2 + (7-k)^2$

$32 = (4)^2 + (7-k)^2$

$32 = 16 + (7-k)^2$

$32 - 16 = (7-k)^2$

$16 = (7-k)^2$

$\sqrt{16} = (7-k)$

$4 = 7-k$

$k = 3$

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3 years ago

Compare and contrast the absolute value of a real number to that of a complex number.

sveticcg [70]

The absolute value of a real number is a positive value of the number. Which means that the absolute value is the distance from zero of the number line. However, that of the complex numbers is the distance from the origin to the point in a complex plane.

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3 years ago

Read 2 more answers

Decrease 248 by 30%

Snowcat [4.5K]

Okay this equation really says is what is 30% of 248.

So, lets convert 30% to a fraction, 3/10 which is easier to work with.

All you have to do now is get out a calculator and do 248 *3/10 (or .3) and get 74.4

So subtract 74.4 and get

173.6

8 0

3 years ago