<span>To solve this problem, we can use this formula d = rd (distance = rates x time)
She runs at a speed of 9 mph and walks at a speed of 3 mph.
Her distance running is
d = 9tr
where tr is the time she spends running
Her distance walking is
d = 3tw
where tw is the time she spends walking
The distances are the same so
9tr = 3tw
We also know that the total time is 5 hours
tr + tw = 5
tr = 5-tw
Substitute this value of tr in the first equation
9tr = 3tw
9(5-tw) = 3tw
45-9tw = 3tw
45 = 12tw
3.75= tw
Denise will spend 3.75 hours (3 hours, 45 minutes) walking back and 1.25 hours (1 hour, 15 minutes) running.</span>
Answer:
2,2 dimethyl propane
Step-by-step explanation:
To name such an organic compound, first identify the longest carbon chain in the provided table, the fourth compound, its longest carbon chain has three carbon atoms thus, the prefix prop-
Then we find the other substituents attached to the carbon chain. In the given compound it has two methyl (CH₃) groups attached to the second carbon atom.
thus 2,2 since there are two attached.
Answer:
Ce clasă ești dacă nu te superi că te întreb vreau doar sa văd daca te pot ajuta
Answer:
Step-by-step explanation:
(Subtract from both sides of the equation to isolate )
(Simplify)
(Symmetric Property of Equality)
(Divide both sides of the equation by to get rid of 's coefficient; remember that , so has a coefficient of )
(Simplify)
Hope this helps!