if A= 5/6 ,B= 2/3,C = 9/6 then find the value of B(A+C)+C(A+B) b) a cyclist covers a distance of 15km in 2hours calculate his spe

Question

if A= 5/6 ,B= 2/3,C = 9/6 then find the value of B(A+C)+C(A+B)

b) a cyclist covers a distance of 15km in 2hours calculate his speed​

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Đan Thu 1 week 2021-07-23T00:15:52+00:00 1 Answers 2 views 0

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    2021-07-23T00:17:42+00:00

    Answer:

    Step-by-step explanation:

             A = 5/6 ,      B = 2/3,         C = 9/6

    B (A + C) + C (A + B)           I expanded the terms

    AB + BC + AC +BC            collect the two BC terms

    AB + 2BC + AC

          A = 5/6 ,      B = 2/3,         C = 9/6

    AB + 2BC + AC     substiutite the values in for the variables into the eq

    (5/6)(2/3) + 2(2/3)(9/6) + (5/6)(9/6)

      (10/18)  +  2 (18/18)  +  45/36

      (10/18)  +  2 (1)  +  45/36

      20/36  + 72/36 + 45/36                   2 = 72/36

        (20  + 72 + 45) / 36

             137/36                    This answer seems odd but I think it is correct

             or  3 29/36

    b)  divide  15 km by 2 hours    to get the speed in   _________ km/hr

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