Answer:
20 minutes
Step-by-step explanation:
Manila walked home in 30 minutes. She walks 4 miles an hour. Since 30 minutes is half an hour then its half the distance of the rate. 4/2 = 2 miles. This means home is 2 miles away.
Since her sister runs 6 miles an hour, the time it took her will be for only 2 miles. So 6 miles divided into 3 is 2. An hour divided by 3 = 20 minutes. This means her sister travels home 2 miles in 20 minutes.
50 - 40x ≥ 200
-40x ≥ -300
x ≤ 7.5
40$ can be withdrawn from the account 7 weeks if she wants to maintain a balance at least 200<span />
Answer:
Step-by-step explanation:
7+5b²-2a²+7b²+66-20a-3
first collect like terms
5b²+7b²-2a²-20a+7-3
12b²-2a²-20a+4
hope it's helpful
THANK YOU.
