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miss Akunina [59]
4 years ago
14

In September 8 out of 10 days were rainy. how many total days in September were rainy

Mathematics
2 answers:
Mademuasel [1]4 years ago
8 0

Answer:

wouldnt it be 18

Step-by-step explanation:

because 8+10=18 .-.

ryzh [129]4 years ago
7 0

Answer:

24 days were rainy

Step-by-step explanation:

8 out of 10 days were rainy....meaning 2 out of 10 days were not rainy

so the ratio of rainy days to not rainy days is : 8:2....added = 10

so 8/10 of all the days are rainy and 2/10 of all the days are not rainy.

there are 30 days in september...

8/10 of 30 are rainy.......8/10 * 30 = 240/10 = 24 rainy days <===

2/10 of 30 are not rainy....2/10 * 30 = 60/10 = 6 non rainy days

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3 years ago
The formula is:<br> Y= mx+b
Aliun [14]
<h2>                             Question 1</h2>

Answer:

The graph is showing the story.

Step-by-step explanation:

Victoria is on the 13th page of the book, she reads 3 pages after every next hour.

After 1st hour she has read = 13 + 3 = 16

As she reads 3 pages after every next hour.

so

After 2nd hour she has read = 16 + 3 = 19

After 3rd hour she has read = 19 + 3 = 22

After 4th hour she has read = 22 + 3 = 25

After 5th hour she has read = 25 + 3 = 28

So the graph is showing this phenomena.

<h2>                          Question 2</h2>

Answer:

The equation that would generate this graph and table would be:

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Step-by-step explanation:

Given the slope-intercept form of the equation of the line

y=\:mx+b

Taking any two points

(1, 16)

(2, 19)

\mathrm{Slope\:between\:two\:points}:\quad \mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}

\left(x_1,\:y_1\right)=\left(1,\:16\right),\:\left(x_2,\:y_2\right)=\left(2,\:19\right)

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Plugging any point, let say (1, 16), and m = 3 in the slope-intercept form to find the value of b (y-intercept).

y=\:mx+b

16=\:3\left(1\right)+b

\mathrm{Switch\:sides}

3\left(1\right)+b=16

\mathrm{Remove\:parentheses}:\quad \left(a\right)=a

3\cdot \:1+b=16

\mathrm{Multiply\:the\:numbers:}\:3\cdot \:1=3

3+b=16

\mathrm{Subtract\:}3\mathrm{\:from\:both\:sides}

3+b-3=16-3

b=13

Thus the equation that would generate this graph and table is:

y=\:mx+b

  • m = 3
  • b = 13

y=\:3x+13

Therefore, the equation that would generate this graph and table would be:

  • y=\:3x+13
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