math
there are 40 pupils in a class. each girl is given 5 books and each boy is given 4 books.the girls have 65 more books than the boys. how many more girls than boys are there in the class?
physics 11
a 4.00kg object traveling westward at 25.0m/s hits a 15.0kg object at rest. the 4.00kg object bounces eastward at 8.00m/s. what is the speed and direction of the 15.0kg object?
English Language Arts
Give examples of three transitional expression.
Math
What even number has a 7 in the hundreds place, and odd number in the thousands place ?
Math
1. The length of a rectangle is 5 mm longer than its width. Its perimeter is more than 30 mm. Let w equal the width of the rectangle. a. Write an expression for the length in terms of the width. b. Use expressions for the length and width to write an inequality for the perimet...
geometry
A moving point is always equidistant from (-3,2) and the line 2x-y+2=0. What is the equation of its locus? I need help for this problem because I am not very sure of my answer. Thanks in advance.
Physics
An airplane is flying in a horizontal circle at a speed of 106 m/s. The 81.0 kg pilot does not want the centripetal acceleration to exceed 6.16 times free-fall acceleration. Find the minimum radius of the plane’s path. The acceleration due to gravity is 9.81 m/s2. Answer ...
math
whatis the unit price of 40 ounces for $12
physics
how long will it take a 1750-watts motor to a lift a 285-kg piano to a sixth storey window 1.6 meters above
math
28 miles downstream in 2 hours 12 miles upstream in 3 hours what would the be speed in still water
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