Answer:
I hope you have a wonderful day!
Step-by-step explanation:
I hope this makes your day :))
Answer:
( ~ Sure, But i'm slow <3 ~ )
Is it....
x = 6
Step-by-step explanation:
(( Sorry if i got it wrong- im Dumb. <3 ))
(( But here's a nice picture for u. ^^ ))
first one
Step-by-step explanation:
Answer:
77.14 minutes.
Step-by-step explanation:
Jack's time = 3 hours
Jill's time = 2.25 hours = 2 1/4 = 9/4 hours
Combined time = x
Rates :
Jack = 1/3 ; jill = 1 / 2.25 = 1 / 9/4 = 4 /9
Combined rate = 1/x
Setting up the equation :
1/3 + 4/9 = 1/x
Lcm of 3 and 9 = 9
(3 + 4) / 9 = 1/x
7/9 = 1/x
Cross multiply :
7x = 9
x = 9/7 hours
x = (9/7)* 60
x = 77.14 minutes
Combined time = 77.14 minutes.