Answer:
<h3>c =2</h3>
Step-by-step explanation:
For the polynomial to be divisible by x-4, hence x = 4
Given
p(x) = cx^3-15x -68
p(4) = c4^3-15(4)-68
p(4) = 64c-128
If p(4) = 0
0= 64c - 128
64c = 128
c = 128/64
c = 2
hence the value of c is 2
Been a while but I'm gonna try..! Okay!
For the Focus use the vertex to find it. (9/2 , 0)
For the directrix I believe it is. x = -9/2
Answer:
The no. of subscribers of the magazine after 5 years is = 55713
Step-by-step explanation:
Given data
Total subscribers (N) = 72000
Drop in subscriptions in each year (R) = 5%
No. of subscribers of the magazine in 5 years is given by
= 55713
Thus the no. of subscribers of the magazine after 5 years is = 55713
Answer:
Step-by-step explanation:
The total amount Rita spent is ...
(18.54x +23) +(25) = 18.54x +48 . . . total spent
__
When x=2, that is approximately ...
(18.5)(2) + 48 = 37 +48 = (40 -3) +(50 -2) = (40 +50) -(3 +2) = 90 -5 = 85
Rita spent about $85 if she bought 2 items.
_____
<em>Additional comment</em>
Estimation is often done using 1 significant figure. In this case, that would mean rounding the equation to 20x+50, so it would give a value of 90 when x=2.
An additional task when estimating is to estimate the error in the estimate. Here, using 20x+50 has an error of approximately 1.5x+2 (too high), so the error for 2 items will be about (1.5(2)+2) = 5. That is, the estimate of 90 is approximately 5 too high. Even this estimate has a remaining small error of 0.04x (too low).
Answer:the answer is 3 and -1
Step-by-step explanation:
X=3
And
X=-1
