Question Evaluate the expression for m = -3. -415+ m |
1 answer:
You might be interested in
Answer:
B choice.
Step-by-step explanation:
The graph decreases. Therefore, the slope is in negative. We can rule out A and C choices.
It is very obvious to tell because of steepness. Low steepness = low value
High steepness = high value.
We can also find the slope by using rise/run.
The change of y over the change of x.
Given the coordinate points (0,1) and (4,0). Both points are part of the graph.
Therefore the value of m is - 1/4
Answer:
_______________________________________________
1) 72
cm² / min. ;
_______________________________________________
2) 192 cm² / min.
_______________________________________________
Explanation:
____________________________________________
Area of a circle: A = r² ;
Rate of change of Area is: da/dt = 2
r (dr/dt) ;
Given: dr/dt = 3 cm / min.
______________________________________________________
Problem 1)
____________________________________________________________
dA/dt = 2 *(12 cm)*(3 cm/ min) = 72 cm² / min. ;
____________________________________________________________
Problem 2)
____________________________________________________________
dA/dt = 2 *(32 cm)*(3 cm/ min) = 192 cm² / min.
_____________________________________________________________
_______________________________________________
1) 72
_______________________________________________
2) 192
_______________________________________________
Explanation:
____________________________________________
Area of a circle: A =
Rate of change of Area is: da/dt = 2
Given: dr/dt = 3 cm / min.
______________________________________________________
Problem 1)
____________________________________________________________
dA/dt = 2
____________________________________________________________
Problem 2)
____________________________________________________________
dA/dt = 2
_____________________________________________________________