Answer:
x = 27.86 thats the answer
Answer:
see attached image for the graph
Step-by-step explanation:
To graph the linear equation :
we need just two points pairs, but we better use three to make sure they are aligned. We can find convenient pairs by choosing values of the x-variable that are multiples of 4 in order to cancel the denominator of the slope : So let's use:
1) x=0 then giving the pair: (0,2)
2) x=4 then giving the pair: (4,5)
3) x=-4 then giving the pair: (-4,-1)
Now we plot then on the grid (see attached image) and join them with a straight line.
Answer:
800
Step-by-step explanation:
Hope this helps
Answer:
16
Step-by-step explanation:
=-2(7-15)
USING 'BODMAS' RULE
= -2(-8)
= -2*-8
= 16
when either
or
. The intervals you need to check are then
,
, and
.
This means you can ignore the option with intervals containing
; this number is irrelevant. So (B) would not be correct.
will be increasing on the interval to the left or right of each critical value if the sign of the derivative in that interval is positive, or decreasing if the sign is negative.
For example, from the interval
we could pick
. Then
, so
is increasing on this interval. Luckily this is all you need to check, because (C) is the only option involving this conclusion.