Mrs. Landes has a class of piano students with twice as many girls as boys. Of the boys, 90% practice regularly. If a student is selected at random, find the probability it is a boy who practices regularly.
What will be an ideal response?
0.30
Mathematics
You might also like to view...
Solve the problem.A ball is thrown downward from a window in a tall building. The distance fallen after t seconds is 
where s is in feet. How long (to the nearest tenth) will it take the ball to fall 153 feet?
A. 3.1 sec B. 2.3 sec C. 5.3 sec D. 2.1 sec
Mathematics
Evaluate the expression.(-4)-1
A. -4
B. - 
C. 
D. 4
Mathematics
The bar-graph shows the average living expenses of an undergraduate student. Provide an appropriate response.
Use a mathematical model to predict the average living expenses of an undergraduate student in 2007
A. $8500 B. $10,250 C. $9550 D. $8150
Mathematics
If possible, evaluate the expression by hand. If not, approximate the answer to the nearest hundredth.7291/2
A. 27 B. 108 C. 13.5 D. 54
Mathematics