Hello, we need to solve this system, c being a real number.
y=y, right? So, it comes.
We can compute the discriminant.
If the discriminant is 0, there is 1 solution.
It means for 
And the solution is
If the discriminant is > 0, there are 2 real solutions.
It means 4(4-c) > 0 <=> 4-c > 0 <=> 
And the solution are
If the discriminant is < 0, there are no real solutions.
It means 4(4-c) < 0 <=> 4-c < 0 <=> 
There are no real solutions and the complex solutions are
Thank you.
I think the best answer would probably be 1
Answer:
a)78
b)82.95
Step-by-step explanation:
To get the amount something is marked up you just need to multiply it by
1+0.(the%)
so in this case you multiply 60 by 1.30 to get 78
To get a discount you just have to do the same but without the +1
so 88*0.15
should get you the discount amount (13.2)
which you subtract from the original number (88-13.2 = 74.8)
now to get sales tax you would multiply the 79 by 0.05 which is 3.95
and add that to the total of 78.75 since sales tax applies AFTER coupons
Answer:
first of all, the graphs are so poorly plotted,even kn computer...
anyways,
since the blue one ending at x=5 on the x axis,
while actual log ends at x=0 this means
X=x-5
and since, log1=0 but it's 5 in blue graph,
the graph is moved up by 5
hence,
y=5+log(x-5)
Answer:
<h2>y - 5 = -1/4(x - 4)</h2>
Step-by-step explanation:
The point-slope form of an equation of a line:
We have m = -1/4 and the point (4, 5). Substitute:
