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3 years ago

Solve this equation8x^2+2x-3=0

Mathematics

1 answer:

Darya [45]3 years ago

5 0

8x^2-4x+6x-3=0
4x(2x-1)+3(2x-1)=0
(4x+3)(2x-1)=0
x = -3/4 or x = 1/2

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3 years ago

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3 years ago

Read 2 more answers

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214.2 units²

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3 years ago

Suppose that we were going to conduct a study to determine if there is an increased risk of getting lung cancer based on whether

oee [108]

Answer:

Sample relative risk is 4.

Step-by-step explanation:

We are given the following in the question:

Group 1 of smokers: 10 out of 100 get lung cancer.

$\text{P(Lung cancer for smoker)} = \dfrac{10}{100} = \dfrac{1}{10}$

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$\text{P(Lung cancer for non-smoker)} = \dfrac{5}{200} = \dfrac{1}{40}$

Sample relative risk:

It is the ratio of probability of an outcome in an exposed group to the probability of an outcome in an unexposed group.

Sample relative risk =

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Thus, sample relative risk is 4.

4 0

2 years ago