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._____________________________________________________________
Answer:
The answer is 7
Step-by-step explanation:
2 negative numbers would equal a positive number.
so,Bascially it's like your just taking 8 away from 1.
Answer:
B
Step-by-step explanation:
A 23.5*5=117.5> 95
c 95*1=95
so it is B
Answer:
Step-by-step explanation:
Any multiple of the given equation is also a dependent linear equation
From the equation
-5x+7y=2
Multiplying all through by any number, say 2
2(-5x)+2(7y)=2(2)
-10x+14y=4 is a dependent linear equation for -5x+7y=2
If you don't fancy using a multiple, you can write the gradient equation y=mx+c
-5x+7y=2
7y=5x+2
Dividing all through by 7 gives the equation as
y=5x/7 + 2/7
Answer:qt62
Step-by-step explanation:
kd