Page 349 - Algebra 1

*23.
(Inv 5)
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Write the inverse of the statement: “If a polygon is has four sides, then it is a quadrilateral.” Then determine whether the new statement is true or false. If false, give a counterexample.
_-4
Error Analysis Two students simplify the expression -r3s-4 + 2s . Which student is
correct? Explain the error. r -3
Student A
_-4 -r3s-4 + 2s
r-3 cannot simplify
Student B
_-4 -r3s-4 + 2s
r-3 _3 3
-r _2r = s4 + s4
_r3 = s4
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(51)
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Geometry Two sides of a triangle measure 4x + 8 and x2 + 2x. Find the
ratio of the first side to the second side. Simplify, if possible.
x2 + 2x
_ 4x+8
Multiple Choice On the first day of the school play, Carlos sold four tickets. On the second day, he sold seven tickets. Which equation of a line represents the line that passes through the two points that represent the data in this problem?
A y=3x+1 B y=_1x+1 C y=-3x+1 D y=3x-1 3
Write Find the slope of the line that passes through (-1, 2) and (3, 2). Explain.
Rachel and a Michelle are crocheting a baby blanket that will be 72 inches long. Rachel crochets the first 24 inches and then gives the blanket to Michelle to finish. Michelle expects to crochet at a rate of 8 inches per day. How many days will it take Michelle to finish the blanket?
a. Write an equation giving the length y of the blanket (in inches) when crocheting for x days.
b. Graph the equation using a graphing calculator.
c. How long it will take Michelle to finish the blanket?
Transportation John is 500 miles from home. He is traveling toward home at a constant rate of 65 miles per hour. The distance d (in miles) away from home after t (in hours) is given by the equation d = 500 - 65t.
a. Use a graphing calculator to make a table of values with the values of t from 0 to 5 in increments of 1.
b. How far away from home John is after 4 hours?
_6a
3a - 1
How many feet of trim will be painted if the trim goes around three sides of the
A rectangular window has a length of window (both lengths and one width)?
meters and a width of
4 meters. 3a - 1
334
Saxon Algebra 1