Use a proportion to solve the problem.The ratio of the lengths of strings that play the notes D and A is 3 to 2. If a string 42 centimeters long plays a D, what is the length of the string that plays an A?
A. 44 centimeters
B. 45 centimeters
C. 63 centimeters
D. 28 centimeters
Answer: D
Mathematics
You might also like to view...
Find the equation of the normal line to the indicated curve at the given point.y = 
at 
A. 125x + 60y + 36 = 0 B. 25x + 60y + 36 = 0 C. 25x - 60y + 36 = 0 D. 125x - 60y + 36 = 0
Mathematics
In testing the difference between two population means using two independent samples, we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference
Mathematics
Find the distance (correct to two decimal places) between the given parallel planes. Select the correct answer.
 multiple choice.png)
Mathematics
Find the exact value of the expression if ? = 30°. Do not use a calculator.g(?) = cos ?Find g(2?).
A. 
B. 
C. 
D. 1
Mathematics