The sum of the speeds of two trains is 727.4 miles per hour. If the speed of the first train is 8.6 mph faster than the second train, find the speeds of each.

Two angles of a triangle measure 64 and 48. which of the following is the measure of the largest exterior angle of the triangle

Jerry can detail a car by himself in 50 minutes. sally does the same job in 1 hour. how long will it take them to detail a car working together?

1 and 1/9 plus 3 and 5/8

Y for a daily lottery, a person selects a three-digit number. if the person plays for $1, she can win $500. find the expectation. in the same daily lottery, if a person boxes a number, she will win $80.

What is 6811.09 round to ten

In Mrs. Smith's enrichment class, 25% of the students are boys. There are 7 boys in the class. How many total students are in Mrs. Smith's enrichment class?

If a octagon is 25 centimeters long then the perimeter of the octagon is how many meters

In parallelogram ARMY, angle A equals (3x+10) ° and angle Y equals (2x+15.5) ° what is X?

A box contains 2 white, 3 red, and 4 black marbles. you choose two marbles and each are chosen at random. find the probability that both marbles are black

More precise 2.8 mm or 3.79 mm