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2 years ago

Solve for x. Round to the nearest tenth. Help

Mathematics

2 answers:

LekaFEV [45]2 years ago

8 0

Answer:

Step-by-step explanation:

cosθ = adjacent / hypotenuse

cos(26) = 18 / x

x= 18 / cos(26)

x= 27.82418 ≈ 20 (to nearest tenth)

Mrac [35]2 years ago

3 0

Answer:

x ≈ 20

Step-by-step explanation:

Using the cosine ratio in the right triangle

cos26° = $\frac{adjacent}{hypotenuse}$ = $\frac{18}{x}$ ( multiply both sides by x )

x × cos26° = 18 ( divide both sides by cos26° )

x = $\frac{18}{cos26}$ ≈ 20.0 ( to the nearest tenth )

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Lemur [1.5K]

Step 1. Identify the variable.
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3 years ago

The following lists the joint probabilities associated with smoking and lung disease among 60-to-65 year-old men. Has Lung Disea

Anna71 [15]

Answer:

4.11% probability that he has lung disease given that he does not smoke

Step-by-step explanation:

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Does not smoke

Event B: Lung disease

Lung Disease/Nonsmoker 0.03

This means that $P(A \cap B) = 0.03$

Lung Disease/Nonsmoker 0.03

No Lung Disease/Nonsmoker 0.7

This means that $P(A) = 0.03 + 0.7 = 0.73$

What is the probability of the following event: He has lung disease given that he does not smoke?

$P(B|A) = \frac{0.03}{0.73} = 0.0411$

4.11% probability that he has lung disease given that he does not smoke

5 0

3 years ago

Help please!!!<br> Can someone explain how to solve this please?

Greeley [361]

Answer:

12 the answer

Step-by-step explanation:

3 0

3 years ago

What the answer to this

neonofarm [45]

Answer:

Step-by-step explanation:

(I solved in the picture, firstly look at there)

after completing the square and factoring :

${x}^{2} + 4x + 4 = 8 + 4$

${x}^{2} + 4x + 4 = 12$

${(x - 2)}^{2} = 12$

Hope this helps ^-^

6 0

3 years ago

A line is defined by the equation y=2/3x-6. The line passes through a point whose y-coordinate is 0. What is the x- coordinate o

NISA [10]

Answer: Its 9

Thats the answer

5 0

3 years ago