Politics. The percentage s of seats in the House of Representatives won by Democrats and the percentage v of votes cast for Democrats (when expressed as decimal fractions) are related by the equation 5 v − 2 s = 1.4 0 < s < 1 , 0.28 < v < 0.68 (A) Express v as a function of s , and find the percentage of votes required for the Democrats to win 51 % of the seats. (B) Express s as a function of v and find the percentage of seats won if Democrats receive 51 % of the votes.
Politics. The percentage s of seats in the House of Representatives won by Democrats and the percentage v of votes cast for Democrats (when expressed as decimal fractions) are related by the equation 5 v − 2 s = 1.4 0 < s < 1 , 0.28 < v < 0.68 (A) Express v as a function of s , and find the percentage of votes required for the Democrats to win 51 % of the seats. (B) Express s as a function of v and find the percentage of seats won if Democrats receive 51 % of the votes.
Solution Summary: The author calculates the percentage of votes required for the Democrats to win 51% of the seats.
Politics. The percentage
s
of seats in the House of Representatives won by Democrats and the percentage
v
of votes cast for Democrats (when expressed as decimal fractions) are related by the equation
5
v
−
2
s
=
1.4
0
<
s
<
1
,
0.28
<
v
<
0.68
(A) Express
v
as a function of
s
, and find the percentage of votes required for the Democrats to win
51
%
of the seats.
(B) Express
s
as a function of
v
and find the percentage of seats won if Democrats receive
51
%
of the votes.
1 2
21. For the matrix A
=
3 4
find AT (the transpose of A).
22. Determine whether the vector
@
1
3
2
is perpendicular to
-6
3
2
23. If v1
=
(2)
3
and v2 =
compute V1 V2 (dot product).
.
7. Find the eigenvalues of the matrix
(69)
8. Determine whether the vector
(£)
23
is in the span of the vectors
-0-0
and
2
2
1. Solve for x:
2. Simplify:
2x+5=15.
(x+3)² − (x − 2)².
-
b
3. If a = 3 and 6 = 4, find (a + b)² − (a² + b²).
4. Solve for x in 3x² - 12 = 0.
-
Chapter 2 Solutions
Finite Mathematics for Business, Economics, Life Sciences, and Social Sciences (13th Edition)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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