Could 7.7\text{ cm}, 4.0\text{ cm},7.7 cm,4.0 cm,7, point, 7, space, c, m, comma, 4, point, 0, space, c, m, comma and 1.7\text{ cm}1.7 cm1, point, 7, space, c, m be the side lengths of a triangle?

No, they could not be the sides of a triangle.the triangle inequality theorem states that the sum of the smallest two sides of any triangle must be larger than the largest side.  the smallest two sides here are 1.7 and 4; 1.7+4 = 5.7.  this is not long enough; it must be longer than 7.7.

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.