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frosja888 [35]
3 years ago
7

PLSS HELP ME WITH THIS

Mathematics
1 answer:
kolbaska11 [484]3 years ago
8 0

Answer:

127

Step-by-step explanation:

400+1495=1895

1895/15=126.333333333

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4y-x=5+2y; 3x+7y=24 solve systen by using substitution
jek_recluse [69]
4y - x = 5 + 2y ..... (1)
3x + 7y = 24    ..... (2)

by grouping like terms in (1)
4y - x = 5 + 2y
4y - 2y - x = 5
<span>-x + 2y = 5 </span>        ..... (1a)

by multiplying (1a) through by -3
(-3)(-x) + 2(-3)y = 5(-3)
3x  -  6y = -15  ..... (1b)

by subtracting 1a from 2
3x -3x + 7y - (-6y) = 24 - (-15)
                      13y = 39
           ⇒            y = 3

by substituting y=3 into (2)
    3x + 7(3) = 24 
              3x = 24 - 21
              3x = 3
        ⇒     x = 1


∴ solution to the system is x=1 when y = 3
6 0
3 years ago
[MA5T10 Dj Name the property being illustrated.
OLga [1]

Answer:

c

Step-by-step explanation:

cause if you do both it will be the same answer with is also called commutatative

3 0
3 years ago
Write an equation in point slope form of a line that passes through the given point and has the given slope.
maxonik [38]

the equation of a line in point-slope form is

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here m = - 2 and (a, b) = (2, 6), hence

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