Answer:
80 wheels
Step-by-step explanation:
20 x 2 = 40, 40 bycicle wheels.
10 x 4 = 40. 40 car wheels.
40+40 = 80
80 wheels total
Answer:
B. y = e^(-2/x).
Step-by-step explanation:
dy/dx = 2y / x^2
Separate the variables:
x^2 dy = 2y dx
1/2 * dy/y = dx/x^2
1/2 ln y = = -1/x + C
ln y = -2/x + C
y = Ae^(-2/x) is the general solution ( where A is a constant).
Plug in the given conditions:
e = A e^(-2/-2)
e = A * e
A = 1
So the specific solution is y = e^(-2/x).
Answer:
B. 
Step-by-step explanation:
The given circle is centered at
and has radius 3 units.
The equation is given by

where (a,b) is the center and r is the radius.
We substitute the values to obtain;


Answer:
The answer is 1,1
Step-by-step explanation:
Hope this helps
Answer:
-9
Step-by-step explanation:
-3 times -3 = -9.