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aev [14]
3 years ago
8

Find the value of y.

Mathematics
1 answer:
Ksivusya [100]3 years ago
7 0

Answer:

y = 2

Step-by-step explanation:

20y - 21 = 10y - 1

20y = 10y + 20

10y = 20

y = 2

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-2 (4a + 4b) + 5a > -35

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Which graph shows all the values that satisfy Two-ninths x + 3 greater-than 4 and five-ninths
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Step-by-step explanation:

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The length of the rectangle is 19 less than 3 times the width. If the width of the rectangle is 9 cm, what would the length of t
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A survey of 800 students yielded the following information: 519 were seniors, 430 were commuters, and 300 of the seniors were co
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Answer:

The number is  (S \ u \  C  ) = 649

Step-by-step explanation:

From the question we are told that  

      The sample size is  n =  800

       The number of seniors is  S  =  519

         The number of  commuters is  C =  430

         The number of of seniors that are commuters is  (S\  n \ C )=  300

Generally the number of 800 surveyed students who were seniors or were commuters is  mathematically evaluated as

     (S \ u \  C  ) =  S + C  -  ( S \  n  \  C )

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=>   (S \ u \  C  ) = 649

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