Since one mile is 5280 feet,
64 miles is 337920 feet.
337920 Feet per hour.
Hope this helped!
The answer to "12x-(4y+7z) for x=9 y= 4 and z = 2" is 78.
Answer: <em>(1,5,7,10,11,15)</em>
To get the union of two sets of numbers, all you do is combine the numbers from least to greatest. If a number repeats in the 2 sets, you only put it once.
Ok soo
-5x+x/2=9
- 4x/2=9
-(2^2-1 *x)=9
2x/2=- 9/2
x=- 9/2
x= -4 1/2
