Mathematics, 30.03.2021 02:20, jakebice5991
A train is 1000 metres long. It is travelling at a constant speed, and approaches a
tunnel that is 3000 metres long. From the time that the last car on the train has
completely entered the tunnel until the time when the front of the train emerges
from the other end, 30 seconds pass. Determine the speed of the train, in kilometres per hour.
Answers: 2
Mathematics, 21.06.2019 15:30, ayoismeisalex
Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81
Answers: 3
Mathematics, 21.06.2019 22:40, bullockarwen
Which of the following circles have their centers on the x-axis? check all that apply.
Answers: 1
Mathematics, 21.06.2019 23:30, bhopainting
Simplify (8x2 β 1 + 2x3) β (7x3 β 3x2 + 1). β5x3 + 11x2 β 2 5x3 β 11x2 + 2 x3 + 2x2 + x3 x3 β 2x2 β x3
Answers: 1
A train is 1000 metres long. It is travelling at a constant speed, and approaches a
tunnel that is...