There are 500 passengers on a train.

7/20 of the passengers are men.

40% of the passengers are women.

the rest of the passengers are children.

work out the number of children on the train?

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The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.