multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom equation from the top equation
multiply the top equation by 3, multiply the bottom equation by -2, then add the equations
The mean is 10 because you will add all the numbers and then divide the answer by 4
Answer:
2 +i
Step-by-step explanation:
-3+6i-(-5-3i)-8i
Distribute the minus sign
-3 +6i +5 +3i -8i
Combine like terms
-3+5 +6i +3i -8i
2 +i
She ran the last 100 meters in 2:15 -1:25 = 0:50, so her average speed was
... (100 m)/(50 s) = 2.0 m/s
