Answer:
7 and 12
Step-by-step explanation:
The decimal 0.75 is equivalent to 3/4
Answer:

Step-by-step explanation:
Let
x-----> the speed of sound in miles per hour
y----> the speed in Match 3
we know that
-----> equation A
Substitute the value of x in the equation A


Answer: The number is 58.5
Explanation: 2/3=29 therefore 1/3=14.5. 14.5x3=43.5 which is the number after being decreased by 15, so after you add 15 back to it you get 58.5