77.) x= {-5, 6}
78.) x= {-4, 9}
79.) x= {5/3, 2}
80.) x= {1/9, 3}
81.) x= {-6, 18}
82.) x= {-3√3 +4, 3√3 +4}
83.) x= {-7, -3}
84.) x= {-√85 +9 /2, √85 -9 /2}
Answer:
Easy Peasy!
Step-by-step explanation:
First we have to set up our equation:
(Let x= Temp. after 5 days)
Sorry, have to define variables. If I didn't do it in Middle School Tests, I get an automatic 0 for that question.

So, let's solve!
(If you didn't know what I did there, I just multiplied the rate of the decreasing and increasing temperature by the number of days it was in effect)

So, the temperature during the fifth day is 58.2 degrees.
Hope this helps!
P.S. Stay Safe!
General formula to be used:

F = future worth; P = present worth, i = annual interest, n = years
1.)
F = <span>
$5931.06</span>
2.)
i = 2.43%3.)

n = 3.7 =
4 years4.)
F = $329.395.)
P = $1.45 *I doubt the 1212 years. I think that is a typo error. Nevertheless, just substitute the correct number of years to determine P :)
Answer:
This depends on how many blue and red marbles there are in total.