The answer to a is 12 and the and the answer to c is367
Answer:
Let the speed of the train be x km/h.
Case 1:
Distance = 288 km
Speed = x km/h
Time = Distance/Speed
= 288/x h
Case 2:
Distance = 288 km
Speed = (x+4) km/h
Time = 288/x + 4 h
Since 288/x > 288/x + 4
288/x - 288/x+4 = 1
288[1/x - 1/x+4 ] = 1
[ x + 4 - x / x(x + 4) ] = 1/288
[4 / x^2 + 4x ] = 1/288
x^2 + 4x = 1152
x^2 + 4x - 1152 = 0
x^2 + 36x - 32x - 1152 = 0
x(x + 36) - 32(x + 36) = 0
(x + 36)(x - 32) = 0
x + 36 = 0 , x - 32 = 0
x = -36 , x = 32
x = -36 , rejected since speed cannot be negative.
Therefore , speed of the train = 32 km/h
X= total number of animals
Total times percent of puppies equals number of puppies. Use numbers you know to find x.
x * 32%= 40 puppies
x * 0.32= 40 puppies
0.32x= 40
x= 125 total animals
Total - #puppies = # cats
125 - 40 = 85 cats
Answer- 40 puppies and 85 cats
What I’m support to fine it in the graph or find the slop, solve for x or y???? Put the whole question so I can help you
B is less than or equal to -11
