A train traveling 90mph takes 4 seconds to completely enter a tunnel and 40 additional seconds to pass through the tunnel.

How long is the train?

How long is the tunnel?

1. 12 = x + 3 2. b+0.6 = - 1 3. a + (-4) = - 13 4. x+27 = - 12 5. a + (-1.2) = - 5.5

The mean of 100 numerical observation is 51.18 what is the value of the sum of all 100 numbers

Write a negation statement. No shopping cart has three wheels

During the new year celebration there are orange, green, purple, and blue fire works. in how many different orders can the different colors of fireworks appear?

Assign two variables for each problem, and write the equations. Do not solve. A pair of boots and a pair of tennis shoes cost $196.12. The difference in their cost is $44.38. Determine the cost of each type of footwear.

Were only 64 seats. The remaining 6 students had to travel in a separate van. The equation 2b + 6 = 70 represents the given scenario.

The lengths of plate glass parts are measured to the nearest tenth of a millimeter. the lengths are uniformly distributed with values at every tenth of a millimeter starting at 590.2, and continuing through 590.8.

How do you subtract o. 8 from 1.5

Four times a number decreased by 25 is the same as 9 times the number. Find the number.

Adam, Brian, and Casey are all brothers. Brian is three years less than twice Casey's age. Adam is 9 years older than Casey. The sum of their ages is 46. How old is each of the brothers