1. Think of a system of inequalities At 6 o'clock in the morning, a man on his way from City A to City B passed through City C. The parcel will arrive in City C at 10 a. m. and must catch the train from City B at 5 p. m. If the distance between cities A and C is 400 km and the distance between cities C and B is 480 km, how fast will it travel?

< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)

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what are the answer choices given for this problem?

14 x 10 5

step-by-step explanation:

10 5 = 100,000

14x10,000 = 140,000