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Wittaler [7]
3 years ago
15

What is 420 in 7hours​

Mathematics
1 answer:
son4ous [18]3 years ago
4 0

Answer:

60

Step-by-step explanation:

420 divided by 7

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Find the slope of the line (0,7), (4,4)
MaRussiya [10]

Answer:

m = - 3/4

Step-by-step explanation:

m = (7-4)/(0-4)

= 3/- 4

= - 3/4

3 0
2 years ago
PRE-CAL/CAL MASTER NEEDED
Tanzania [10]
For every x you see in the f function you will replace with the h function 
  

3 0
3 years ago
According to the American Lung Association, 7% of the population has lung disease. Of those having lung disease, 90% are smokers
postnew [5]

Answer:

Probability that a smoker has lung disease = 0.2132

Step-by-step explanation:

Let L = event that % of population having lung disease, P(L) = 0.07

So,% of population not having lung disease, P(L') = 1 - P(L) = 1 - 0.07 = 0.93

S = event that person is smoker

% of population that are smokers given they are having lung disease, P(S/L) = 0.90

% of population that are smokers given they are not having lung disease, P(S/L') = 0.25

We know that, conditional probability formula is given by;

                        P(S/L) = \frac{P(S\bigcap L)}{P(L)}  

                        P(S\bigcap L) = P(S/L) * P(L)

                                      = 0.90 * 0.07 = 0.063

So,  P(S\bigcap L) = 0.063 .

Now, probability that a smoker has lung disease is given by = P(L/S)

      P(L/S) = \frac{P(S\bigcap L)}{P(S)}

P(S) = P(S/L) * P(L) + P(S/L') * P(L')

       = 0.90 * 0.07 + 0.25 * 0.93 = 0.2955

Therefore, P(L/S) = \frac{0.063}{0.2955} = 0.2132

Hence, probability that a smoker has lung disease is 0.2132 .

7 0
3 years ago
A group of workers can plant 49 acres in 7 days. What is there rate in acres per day?
Galina-37 [17]

Answer:

Step-by-step explanation:

343

8 0
2 years ago
Read 2 more answers
If the graphs of the linear equations in a system are parallel, what does that mean about the possible solution(s) of the system
olya-2409 [2.1K]

Answer:

b) If the graphs of the linear equations in a system are parallel, there is no solution to the given system of equation.

Step-by-step explanation:

Parallel Lines:

Two straight lines l and m are said to be parallel if they do not intersect at any point, if infinitely extended in either direction.

Now, if the graphs of the linear equations in a system are parallel

⇒ By the definition, both the graphs have NO INTERSECTING POINT.

⇒There is not even one common point available to the given system of  

   equation.

Hence, There is no solution to the given system of equation.

7 0
3 years ago
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