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belka [17]
3 years ago
5

The solutions to (r + 4) - 2 = 7 are​

Mathematics
2 answers:
tatuchka [14]3 years ago
7 0

Answer:

r = 5

Step-by-step explanation:

(9+4)-2=11, so that is incorrect, (5+4)=9, then 9-2=7, so the answer is (5+4)-2=7

I hope this helps :)

Nina [5.8K]3 years ago
3 0

Answer:

r=5

Step-by-step explanation:

r+2=7

r=5

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Read 2 more answers
A container holds 9 red markers, 13 blue markers, and 17 green markers. You will randomly select two markers without replacement
IRISSAK [1]

Answer:

a.

                         R-------8/38--------RR

R------9/39--------B-------13/38-------RB

                          G------17/38--------RG

                          R-------9/38--------BR

B--------13/39------B-------12/38-------BB

                           G-------17/38-------BG

                             R-----9/38--------GR

G---------17/39-------B------13/38-------GB

                              G------16/38-------GG

b).

  • 9 ways
  • ways you can select 1 blue are; RB,BR,BG,GB

RB=9/39 × 13/38=3/38

BR= 13/39 × 9/38 =3/38

BG= 13/39 × 17/38=17/114

GB= 17/39 × 13/38=17/114

=3/38 +3/38+17/114+ 17/114 =26/57

  • Probability of selecting 2 red markers= RR = 9/39 × 8/38 =12/247

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8 0
4 years ago
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