Asked by SomeOneUnTraceable
1) Write the ration in simplest form 50:10
A)25:2
B)10:2
C)5:1
D)1:5
2) Solve the following proportion.
r/5=9/21
A)25:2
B)10:2
C)5:1
D)1:5
2) Solve the following proportion.
r/5=9/21
Answers
Answered by
Bosnian
1)
50:10 = 5 ∙ 10 / 10 = 5 = 5:1
2)
r / 5 = 9 / 21
r / 5 = 3 ∙ 3 / 3 ∙ 7
r / 5 = 3 / 7
cross multiply
7 ∙ r = 5 ∙ 3
7 r = 15
r = 15 / 7
50:10 = 5 ∙ 10 / 10 = 5 = 5:1
2)
r / 5 = 9 / 21
r / 5 = 3 ∙ 3 / 3 ∙ 7
r / 5 = 3 / 7
cross multiply
7 ∙ r = 5 ∙ 3
7 r = 15
r = 15 / 7
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