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4 years ago

14

25. Which student spent the average amount of time on homework?

1 answer:

vlada-n [284]4 years ago

8 0

Answer:Gina

Step-by-step explanation:

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The test to detect the presence of the hepatitis B virus is 97% accurate for a person who has the disease and 99% accurate for a

Hoochie [10]

The probability tests to detect the presence of hepatitis B:
P (presence)= 0.97 (true) 0.03 (false)
P (absence)= 0.99 (true) 0.01 (false)

P(infected)=0.0055
P(not infected)= 0.9945

To have an incorrect result:
P[infected and false from P(presence)] + P[not infected and false from P(absence)]

=0.0055*0.03+0.9945*0.01= 0.01011

The answer is<span> 0.01011 </span>

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3 years ago

Please help. I've been trying to figure this out for an hour and I still don't understand how it's 72. I feel really stupid beca

rosijanka [135]

Answer:

C. $72\pi$

Step-by-step explanation:

The radius of the circle is 24 units, then the area of the whole circle is

$\pi r^2=\pi \cdot 24^2=576\pi \ un^2.$

The shaded circle is limited by 45° angle, so its area is

$\dfrac{45}{360}=\dfrac{1}{8}$

of the area of the whole circle.

The area of the shaded circle is

$\dfrac{1}{8}\cdot 576\pi =72\pi \ un^2.$

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4 years ago

Modeling real-world problems with one-step equations

Stels [109]

Answer:

Think of an equation that works, then come up with a real-world situation you might need it

Step-by-step explanation:

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3 years ago

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What is the distance between the points (-9,5) and (8,5)<br>

TiliK225 [7]

Answer:

17 units

Step-by-step explanation:

Use distance formula, $d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$ , to find the distance between (-9, 5) and (8, 5):

Let,

$(x_1, y_1) = (-9, 5)$

$(x_2, y_2) = (8, 5)$

Plug in the values into the distance formula:

$d = \sqrt{(8 - (-9))^2 + (5 - 5)^2}$

$d = \sqrt{(17)^2 + (0)^2}$

$d = \sqrt{(289 + 0)}$

$d = \sqrt{289}$

$d = 17$

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3 years ago

I need help please?!!!!

Oksanka [162]

Answer:

69 420

Step-by-step explanation:

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3 years ago

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