The majority of American adults use their smartphones to go online. The bar graph shows the percentage of American using phones to go online from 2009 through 2013. Source: Pew Internet and American Life Project The data in the graph can be modeled by the formula S = 32 + 8.7 x − 0.3 x 2 , where S represents the percentage of American adults using smartphones to go online x years after 2009. Use this formula to solve Exercises 93 –94 . According to the formula, what percentage of American adults used smartphones to go online in 2013? Does this underestimate or overestimate the actual percent shown by the bar graph? By how much? The formula C = 5 9 ( F − 32 )
The majority of American adults use their smartphones to go online. The bar graph shows the percentage of American using phones to go online from 2009 through 2013. Source: Pew Internet and American Life Project The data in the graph can be modeled by the formula S = 32 + 8.7 x − 0.3 x 2 , where S represents the percentage of American adults using smartphones to go online x years after 2009. Use this formula to solve Exercises 93 –94 . According to the formula, what percentage of American adults used smartphones to go online in 2013? Does this underestimate or overestimate the actual percent shown by the bar graph? By how much? The formula C = 5 9 ( F − 32 )
Solution Summary: The author calculates the percentage of American adults who used smart phones to go online in 2012 according to the formula.
The majority of American adults use their smartphones to go online. The bar graph shows the percentage of American using phones to go online from 2009 through 2013.
Source: Pew Internet and American Life Project
The data in the graph can be modeled by the formula
S
=
32
+
8.7
x
−
0.3
x
2
,
where S represents the percentage of American adults using smartphones to go online x years after 2009. Use this formula to solveExercises 93 –94.
According to the formula, what percentage of American adults used smartphones to go online in 2013? Does this underestimate or overestimate the actual percent shown by the bar graph? By how much?
eric
pez
Xte
in
z=
Therefore, we have
(x, y, z)=(3.0000,
83.6.1 Exercise
Gauss-Seidel iteration with
Start with (x, y, z) = (0, 0, 0). Use the convergent Jacobi i
Tol=10 to solve the following systems:
1.
5x-y+z = 10
2x-8y-z=11
-x+y+4z=3
iteration (x
Assi 2
Assi 3.
4.
x-5y-z=-8
4x-y- z=13
2x - y-6z=-2
4x y + z = 7
4x-8y + z = -21
-2x+ y +5z = 15
4x + y - z=13
2x - y-6z=-2
x-5y- z=-8
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2025.01.31 22:35
f
Use Pascal's triangle to expand the binomial
(6m+2)^2
Listen
A falling object travels a distance given by the formula d = 6t + 9t2 where d is in feet
and t is the time in seconds. How many seconds will it take for the object to travel
112 feet? Round answer to 2 decimal places. (Write the number, not the units).
Your Answer:
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