The factors should add to the b value and multiply to the c value.
Final answer: (x-9)(x-7)
Check:
-9*-7=63
-9-7=-16
Answer:
Step-by-step explanation:
You just need the distance formula here. It's very simple to follow:
which, for us, looks like this:
and
and
and
so
d = 15
For problems such as this, it can be handy to remember that
.. 1/(1/a +1/b) = ab/(a +b)
The time required to do a job is the inverse of the rate at which the job is done. Rates are added when people work together (in math problems, not in real life).
(2:44)*(3:14)/(2:44 +3:14) = 1:28:52.3
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2:44 = 41/15 hours = 82/30 hours
3:14 = 97/30 hours
Using the formula above, we have a "working together" time of
.. (82/30)*(97/30)/(82/30 +97/30) = 82*97/(30*179) = 3977/2685 . . . hours
.. = 1 hour 28 156/179 minutes
.. = 1 hour 28 minutes 52 52/179 seconds
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Learn to use the fraction functions on your calculator. They can be very helpful.
2x^3(x+7)(x-7)
Thats the answer for your question!
