Answer:
40.14
Step-by-step explanation:
Answer:
(b)
Step-by-step explanation:
Under a reflection in the y-axis
a point (x, y ) → (- x, y ), hence
P(4, 1 ) → P'(- 4, 1 )
Q(2, - 8 ) → Q'(- 2, - 8 )
R(- 8, 1 ) → R'(8, 1 )
The surface area of a sphere is A = 4 π R² .
Sadly, the question doesn't give you 'R', so you have to
back it out of the circumference.
Circumference = π (diameter)
Divide each side by π : Diameter = circumference / π
Radius = 1/2 diameter: Radius = circumference / (2 π)
Area = 4 π R² =
4 π (circumference/2π)² =
4 π (circumference)² / 4 π²
Divide top and bottom by 4π : Area = (Circumference)² / π
Circumference = 37.68 units
Area = (37.68)² square units /π =
<em>451.93 square units</em>
9514 1404 393
Answer:
$222,822.57
Step-by-step explanation:
The account balance is given by ...
A = P·e^(rt)
where P is the principal invested at interest rate r for t years.
A = $25,000×e^(0.0875·25) ≈ $222,822.57
Answer:
10x=52
Step-by-step explanation:
4x+x+4x+x=52
10x=52