CHAPTERS 1–9 Cumulative Review Exercises 595Solve each problem.
9.Find the measures of the marked angles. 10.The perimeter of a basketball court is
288 ft. The width of the court is 44 ft
less than the length. What are the dimen-
sions of the court?
(20x – 20)° (12x + 8)°L – 44L11.Solve the formula for L.
Solve each inequality, and graph the solution set.
Graph each equation.
16.Find the slope of the line through and.
17.Write an equation of a line with slope 2 and y-intercept. Give the equation in the
form.
Solve each system of equations.
Ax+By=C1 0, 3 21 - 1, 4 2 1 5, 2 22 x+ 3 y= 6 y= 3- 8 m 616 - 9 p+ 218 - p 2 - 6 Ú 4 p- 50
P= 2 L+ 2 W
- 6 x+ 10 y= 16
3 x- 5 y= 8- 3 x+ 2 y= 13
2 x+ y=- 420.In September 2009, the cost of three
AT&T Trimline®corded phones and two
jWIN corded speakerphones was $84.95.
Two of the AT&T phones and three of
the jWIN phones cost $89.95. Find the
price for a single phone of each model.
(Source:www.radioshack.com)
21.Graph the solution set of the system of
inequalities.x-y 722 x+y... 4Simplify each expression. Write answers with positive exponents.
Perform each indicated operation.
(a)The number of possible hands in contract bridge is about 6,350,000,000. Write this
number in scientific notation.
(b)The body of a 150-lb person contains about lb of copper. Write this
number without using exponents.
Factor.
- 16 x^4 - 1 31. 25 m^2 - 20 m+ 4
16 x^3 - 48 x^2 y 2 a^2 - 5 a- 32.3* 10 -^43 x^3 + 10 x^2 - 7 x+ 4
x+ 415 x^5 - 9 x^4 + 8 x^22 - 19 x^2 + 8 x^4 - 3 x^5212 x- 521 x^3 + 3 x^2 - 2 x- 42ab-^3 c^4
b^5 c^3b- 2
132 #x-^42 -^1