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horrorfan [7]
4 years ago
12

in a class, 3/4 of the class like to go to the movies, 2/3 like action movies... how many like action movies in the class

Mathematics
1 answer:
7nadin3 [17]4 years ago
8 0
50% i'm going to show you with=25%
you start a full calls

/4 going to the movies
]/3 like action movies
25%25% =50%
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Justify each step in the solution of 5x+15=0
ratelena [41]

Subtract 15 from both sides.

5x=-15

Divide by 5

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4 years ago
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Solve the system by substitution.<br> [-2.5x+y = 13.5<br> 12.25x - y=-12.25
IrinaK [193]

Answer:

x = 5/39 , y = 539/39

Step-by-step explanation:

Solve the following system:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

In the first equation, look to solve for y:

{y - 2.5 x = 13.5

12.25 x - y = -12.25

y - 2.5 x = y - (5 x)/2 and 13.5 = 27/2:

y - (5 x)/2 = 27/2

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{y = 1/2 (5 x + 27)

12.25 x - y = -12.25

Substitute y = 1/2 (5 x + 27) into the second equation:

{y = 1/2 (5 x + 27)

1/2 (-5 x - 27) + 12.25 x = -12.25

(-5 x - 27)/2 + 12.25 x = 12.25 x + (-(5 x)/2 - 27/2) = 9.75 x - 27/2:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

In the second equation, look to solve for x:

{y = 1/2 (5 x + 27)

9.75 x - 27/2 = -12.25

9.75 x - 27/2 = (39 x)/4 - 27/2 and -12.25 = -49/4:

(39 x)/4 - 27/2 = -49/4

Add 27/2 to both sides:

{y = 1/2 (5 x + 27)

(39 x)/4 = 5/4

Multiply both sides by 4/39:

{y = 1/2 (5 x + 27)

x = 5/39

Substitute x = 5/39 into the first equation:

{y = 539/39

x = 5/39

Collect results in alphabetical order:

Answer: {x = 5/39 , y = 539/39

5 0
3 years ago
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Wewaii [24]

Sarah scored 82 points on her first test of the year. On the second test,

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82

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3 years ago
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podryga [215]
Uh, I assume you're talking about Percy Jackson. The answer would be the flying shoes, which Percy cannot use because flying would mean entering Zeus's territory, and Percy and Zeus are not getting along. I hope this helps!
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arlik [135]

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