Miagrandaidn
Answered

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PLEASE HELP, I really need this and my brain is having a massive math block, and i don't remember how to do this!!!

PLEASE HELP I Really Need This And My Brain Is Having A Massive Math Block And I Dont Remember How To Do This class=

Sagot :

Redgedidn

Answer: b = 9

Step-by-step explanation:

Set up proportions.

20 : 12

15 : b

Cross multiply the proportions.

20b : 180

Simplyfi the ratio.

20b/20

180/20

The answer is b = 9.

hope this helps :)

JustCaylaidn

Answer:

Step-by-step explanation:

15    b

20  12

15 times 12 is 180

20 times b is 20b

20b=180

÷20  ÷20

b=9

9/12=15/20

3/4=3/4

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