Answer:
$11 is her change
Step-by-step explanation:
This is a simple adding and subtracing problem.
What we first do is add up 4+2+3=9 then we subtract 9 from 20 which gives us $11
We can check our answer by add up 11 + 9 to see if it equals to 20
Answer:
T^2*g / 4pi^2 = l
Step-by-step explanation:
T = 2 * pi * sqrt( l/g)
We need to solve for l
Divide each side by 2pi
T/ (2pi) = 2 * pi/2pi * sqrt( l/g)
T/ (2pi) = sqrt( l/g)
Now square each side
(T/ (2pi))^2 = ( sqrt( l/g))^2
T^2 / 4pi^2 = l/g
Multiply each side by g
T^2 / 4pi^2 * g= l/g*g
T^2*g / 4pi^2 = l
Answer:
The number is 30
Step-by-step explanation:
Of means multiply and is means equals
30% * N = 9
Change to decimal form
.3 * N = 9
Divide each side by .3
.3/.3 *N = 9/.3
N = 30
