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

Question

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Respuesta :

retirEEd retirEEd · Answer 1 · 2021-03-19T18:15:24+01:00

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