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lara31 [8.8K]
3 years ago
13

If the test for a disease is accurate 55% of the time how often will it come back negative if a patient has the disease?

Mathematics
2 answers:
bulgar [2K]3 years ago
6 0

The answer is "A. 45% of the time".

Effectus [21]3 years ago
3 0
The answer is A. 45% of the time.
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Y varies directly with x. When x is 4 y is 8. Find y when x = 10.
grandymaker [24]

Step-by-step explanation:

y = 4 when x = 8 So, 4 = 8k

k = 1/2

y = (1/2)x

Therefore, when x = 10, y = (1/2)(10) = 5

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2 years ago
Suppose that start-up companies in the area of biotechnology have probability 0.2 of becoming profitable, and that those in the
schepotkina [342]

Answer:

a) 0.03

b) 0.68

c) 0.32

Step-by-step explanation:

We are given the following in the question:

B: companies in the area of biotechnology

I: companies in the area of information technology

P(B) = 0.2

P(I) = 0.15

The two events are given to be independent.

a) P(both companies become profitable)

P(B\cap I) = P(B)\times P(I)\\= 0.2\times 0.15 = 0.03

0.03 is the probability that both companies become profitable

b) P(neither company becomes profitable)

P(B'\cap I')\\=P(B')\times P(I')\\=(1-P(B))(1-P(I))\\=(1-0.2)(1-0.15)\\=0.68

0.68 is the probability that neither company becomes profitable.

c) P(at least one of the two companies become profitable)

P(B\cup I) = P(B) + P(I) - P(B\cap I)\\= 0.2 + 0.15 - 0.03\\=0.32

0.32 is the probability that at least one of the two companies become profitable

4 0
3 years ago
4x + 8y = 20<br> -4x + 2y = -30 solve using elimination
Ahat [919]
(7,-1)
comment if u want me to explain the answer
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Which is the value of this expression when j=-2
Nuetrik [128]

Answer:

Step-by-step explanation:

(jk^-2/j^-1k^-3)^3

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-------------               ^3

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switch negative exponenst to other side

(-2)(-2)(-1)^3

__________

(-1)^2

4(-1)

-----

1

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Which multiplication problem is equivalent to 338÷34?
gtnhenbr [62]

Answer:

What are the options?

Step-by-step explanation:

7 0
3 years ago
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