Answer:
The length of the thread which is left on the reel is 790 cm. Used = 210 cm.
Step-by-step explanation:
To convert decimal over to percent, we move the decimal place two places to the right. So 0.5 becomes 50%.
Answer:
the graph on the right-top
Step-by-step explanation:
Transferring an "x" to the right side in
, we get 
The system of inequalities is

We have y=2x+2 - ascending function with a=2, b=2
b=2 shows that ascending function intersects Y-axis is in y=2 - that situation is only on the right-top and left-down. So, we refuse left-top and right-down.
y=-x-3 - descending function with a=-1, b=-3
y<2x+2 is an area below the ascending function and we see that on the left-
is an area above the descending function
On the left-down we have an area above both functions, so we refuse this picture
Right-top is correct
Answer:
The vertex of the function
is 
Step-by-step explanation:
I've graphed this on desmos for a visual
V=πr^2h/3=π·3^2·11.5/3≈108.38495 or 108.40 rounded