math

identify the value of x that makes each pair of the ratios equivalent x:4 and 45:20

A.8
B.9
C.10

plz plz plz plz help me!!!!!!!! PLZ!!!!!

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  1. plz plz plz plz help me!!! i would really appreciate it :)

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  2. Cross multiply and solve for x.

    http://www.purplemath.com/modules/ratio4.htm

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    Ms. Sue
  3. im sorry ms.sue but ur link didn't help me at all :( can u al least give me a hint of what the answer is plz

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  4. Cross multiply.
    4 * 45 = 20x

    Can you take it from there?

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    Ms. Sue
  5. math solve your own problems.

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