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Zinaida [17]
3 years ago
5

You decided to gather some information for how many days it rained over a period of time. You observed that it rained on 17 days

and it did not rain on 13 days. Write a ratio comparing the number of days it rained to the total days you were collecting data.
Mathematics
1 answer:
Alexxx [7]3 years ago
3 0

The correct answer is 17: 30

Explanation:

The purpose of a ratio is to express the relationship between two elements in terms of quantities. For example, if there are 5 oranges and 4 lemons the ratio is 5 to 4. Additionally, this relationship between the quantities of two different things can be expressed as a fraction, by using a colon (:) or by using the word "to." In the last two cases, the colon or word "to" separate the two amounts compared.

In the case presented, the total of days observed was 30 days (17 days with rain + 13 days with no rain) and the ratio of rainy days to the total of days can be expressed as 17:30, \frac{17}{30} or as 17 to 30, considering there were 17 rainy days out of a total of 30 days.

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the minimum wage is established by the federal government. in 1938 the minimum wage was $0.25 per hour and it has risen to $7.25
sasho [114]

Answer:

0.25 = a b^0

a = 0.25

So then our model is given by:

y = 0.25 b^x

Now using the second condition we know that x = 2009-1938 =71 so then we have this:

7.25 = 0.25 b^{71}

We can divide both sides by 0.25 and we got:

\frac{7.25}{0.25}=29 = b^{71}

And then solving for b we got:

b = 29^{1/71}= 1.04856934

So then our model would be given by:

y = 0.25 (1.04856934)^x

Step-by-step explanation:

For this case we know that for 1938 the minimum wag was 0.25 per hour and for 2009 the new minimum wag was 7.25 per hour.

We want to find an exponential function like this:

y = a b^x

Where y represent the value for the minimum wage and x represent the number of years since 1938.

USing the first condition given we know that for 1938 the value of x = 0 and w ehave:

0.25 = a b^0

a = 0.25

So then our model is given by:

y = 0.25 b^x

Now using the second condition we know that x = 2009-1938 =71 so then we have this:

7.25 = 0.25 b^{71}

We can divide both sides by 0.25 and we got:

\frac{7.25}{0.25}=29 = b^{71}

And then solving for b we got:

b = 29^{1/71}= 1.04856934

So then our model would be given by:

y = 0.25 (1.04856934)^x

4 0
3 years ago
-2(21/4)+-2(13/4) what is the answer
sergij07 [2.7K]

Answer:

-17

Step-by-step explanation:

-2(21/4)-2(13/4)

-(21/2)-26/4

-21/2-26/4

-42/4-26/4

-68/4

-17

4 0
3 years ago
Read 2 more answers
When a lilac bush is planted, it is 24 inches tall. Each month, it grows 6 inches taller. How tall will It get over time?
Bingel [31]

Answer:

Dependent variable: time(months) or t

Independent variable: 6

Step-by-step explanation:

h=24+6t

(h=height)

3 0
2 years ago
Read 2 more answers
An airline has 82% of its flights depart on schedule. It has 65% of its flight depart and arrive on schedule. Find the probabili
victus00 [196]

Answer:

0.79

Step-by-step explanation:

Here,  

Let X be the event that the flights depart on time

Let Y be the event that flights arrive on time

So,  

X∩Y will denote the event that the flights departing on time also arrive on time.

Let P be the probability  

P(X∩Y)=0.65

And

P(X)=0.82

We have to find P((Y│X)

We know that

P((Y│X)=P(X∩Y)/P(X) )

=0.65/0.82

=0.79

So the probability that a flight that departs on schedule also arrives on schedule is: 0.79

7 0
3 years ago
Im not sure how to do this <br>​
tigry1 [53]

Answer:1 =5

             2 = 55/3

             3= 11

Step-by-step explanation:

hope i could help lol

6 0
3 years ago
Read 2 more answers
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