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Citrus2011 [14]
3 years ago
13

How many solutions does this system of equations have?

Mathematics
2 answers:
Vsevolod [243]3 years ago
6 0

Answer:

B.) two

Step-by-step explanation:

These equations have two solutions, one for solving for each variable. There is a solution for solving for x, and one for y. For both of these equations,

x = 5 -4y and y = 5/4 - x/4

Rudiy273 years ago
3 0

Answer:

B. two

Step-by-step explanation:

  • 3x = -12y + 15
  • x + 4y = 5

Use the elimination method to solve the system of equations. Move the terms like so. As you can see I kept the first equation the same but multiplied the second equation by -3.

  • 3x = -12y + 15
  • -3x = -12y - 15

Now add. 3x and -3x cancel; so does 15 and -15.

0 = -24y

Divide by -24. 0 div'd by -24 is equal to 0.

y = 0

Substitute y into the second equation.

x + 4(0) = 5

x + 0 = 5

x = 5

You've got x = 5 and y = 0; these are two solutions to the system of equations.

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blagie [28]

Answer:

Step-by-step explanation:

step a system of two equations         c = child ticket     a = adult ticket

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I will multiply eq 1 times TWO and subtract eq 2 from eq 1a)

         eq 1a)  4c + 2a = 16.4

          eq 2)  3c + 2a = 14.1

subtract  (4c - 3c) + (2a -2a)  = 16.4 - 14.1  

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Now find the adult ticket price,  plug 2.3 for c into eq 1)

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                 4.6  + a   =  8.2         substract 4.6 from both sides

                             a =  8.2 - 4.6

                               =   3.6 euros    for one adult ticket

double check using eq 2)    we know c and a values

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    eq 2)  3(2.3) + 2(3.6) = 14.1

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3 years ago
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He has a 26% of getting a strike, which means he has a 74% chance of not getting a strike ( 100% - 26% = 74%).

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Add the probability of making the first one ( 0.77) by the probability of making the second one multiplied by the probability of missing the second one ( 0.77x 0.23)

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Given:
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