Constructing a Box Rework Problem 105 if the box needs to hold 16 cubic feet. 105, Constructing a Box, An open box is to be constructed from a square sheet of sheet metal with dimensions x feet by x feet by removing a square of side 1 feet from each corner and turning up the edges. The volume V of the box is V ( x ) = ( x − 2 ) 2 . Find the dimensions of the sheet metal needed to make a box that will hold 4 cubic feet by solving the equation V ( x ) = 4 .
Constructing a Box Rework Problem 105 if the box needs to hold 16 cubic feet. 105, Constructing a Box, An open box is to be constructed from a square sheet of sheet metal with dimensions x feet by x feet by removing a square of side 1 feet from each corner and turning up the edges. The volume V of the box is V ( x ) = ( x − 2 ) 2 . Find the dimensions of the sheet metal needed to make a box that will hold 4 cubic feet by solving the equation V ( x ) = 4 .
Solution Summary: The author explains how to calculate the dimensions of the sheet metal needed to make a box if box needs to hold 16 cubic feet.
Constructing a Box Rework Problem 105 if the box needs to hold 16 cubic feet.
105, Constructing a Box, An open box is to be constructed from a square sheet of sheet metal with dimensions x feet by x feet by removing a square of side 1 feet from each corner and turning up the edges. The volume
V
of the box is
V
(
x
)
=
(
x
−
2
)
2
. Find the dimensions of the sheet metal needed to make a box that will hold 4 cubic feet by solving the equation
V
(
x
)
=
4
.
Can you answer this question and give step by step and why and how to get it. Can you write it (numerical method)
Can you answer this question and give step by step and why and how to get it. Can you write it (numerical method)
There are three options for investing $1150. The first earns 10% compounded annually, the second earns 10% compounded quarterly, and the third earns 10% compounded continuously. Find equations that model each investment growth and
use a graphing utility to graph each model in the same viewing window over a 20-year period. Use the graph to determine which investment yields the highest return after 20 years. What are the differences in earnings among the three
investment?
STEP 1: The formula for compound interest is
A =
nt
= P(1 + − − ) n²,
where n is the number of compoundings per year, t is the number of years, r is the interest rate, P is the principal, and A is the amount (balance) after t years. For continuous compounding, the formula reduces to
A = Pert
Find r and n for each model, and use these values to write A in terms of t for each case.
Annual Model
r=0.10
A = Y(t) = 1150 (1.10)*
n = 1
Quarterly Model
r = 0.10
n = 4
A = Q(t) = 1150(1.025) 4t
Continuous Model
r=0.10
A = C(t) =…
Chapter 2 Solutions
Pearson eText for Precalculus: Concepts Through Functions, A Right Triangle Approach to Trigonometry -- Instant Access (Pearson+)
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