For Exercises 33-48, solve the system if possible by using Cramer's rule. If Cramer's rule does not apply, solve the system by using another method. (See Examples 6-8) − 5 x − 8 y = 3 4 x + 7 y = 13
For Exercises 33-48, solve the system if possible by using Cramer's rule. If Cramer's rule does not apply, solve the system by using another method. (See Examples 6-8) − 5 x − 8 y = 3 4 x + 7 y = 13
Solution Summary: The author calculates the solution set of the system of linear equations -5x-8y=3 and 4x+7y =13 using Cramer's rule.
For Exercises 33-48, solve the system if possible by using Cramer's rule. If Cramer's rule does not apply, solve the system by using another method. (See Examples 6-8)
2. Suppose the population of Wakanda t years after 2000 is given by the equation
f(t) = 45000(1.006). If this trend continues, in what year will the population reach 50,000
people? Show all your work, round your answer to two decimal places, and include units. (4
points)
3. Solve the equation, give the answer exactly (no calculator approximations), and show all your
work. (4 points)
log5 2x = 3
Let I =
f(x) dx, where f is the function whose graph is shown.
4
2
y
f
X
1
2
3
4
(a) Use the graph to find L2, R2 and M2.
R₂
M2
=
=
=
(b) Are these underestimates or overestimates of I?
O 42 is an underestimate.
O 42 is an overestimate.
◇ R2 is an underestimate.
OR2 is an overestimate.
OM2 is an underestimate.
○ M2 is an overestimate.
(c) Use the graph to find T2.
T₂ =
Elementary Statistics: Picturing the World (7th Edition)
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