Isolate the variable by dividing each side by factors that don't contain the ...
y variable=139x/ 5 2/5-
x variable =5y/139+2/139
Answer:
1/2
Step-by-step explanation:
-4 - -2 = -2 -5 - -1 = -4 = -2/4 = 2/4 because both are negative and simplified it is 1/2
.6 hours. We take the time per hour of sound, which is 1,200 from scientific notation, and compare it to our given, which is 720 from scientific notation. Since we want to know how long it takes for sound to travel for 720 km, we divide 720/1,200 to give us .6.