Step-by-step explanation:
Using the given formula
I = P × R × t
I = 20 × 5/100 × 2
I = $2
Answer:
1.) 15,708cm^2/s
2) 47,124cm^2/s
3.) 109,956cm^2/s
Step-by-step explanation:
Given the following:
50cm/s is the radius of the ripple per second , that is, radius(r) of ripple after t seconds = speed * time(t)
Speed = 50cm/s
r = 50t
.area of a circle(A) = πr^2
Rate of change of area with radius :
dA/dt = π2r . dr/dt
Speed of ripple created = 50cm/s; this is the rate at which the radius changes with time (dr/dt)
dr/dt = 50cm/s
Rate at which area is increasing with time:
dA/dt = π2r . dr/dt
dA/dt = π2(50t).50
dA/dt = 5000πt
After 1 second:
dA/dt = 5000π(1)
= 15,707.963cm^2/s
After 3 second:
dA/dt = 5000π(3)
= 47,123.889cm^2/s
After 7 second:
dA/dt = 5000π(7)
= 109,955.74cm^2/s
9514 1404 393
Answer:
$3,840
Step-by-step explanation:
The interest formula can be rearranged to find the principal amount.
I = Prt
P = I/(rt) = $768/(.04·5)
P = $3,840
They originally borrowed $3,840.
Distance between the point formula is
d=
where (x1,y1) and (x2,y2) are coordinates points
here points are given (3,7) (15,16)
put those points into distance formula
d= now u can do this
