In the standard (x,y) coordinate plane, what is the slope of a line that is perpendicular to 2x- 3y = 9 ?
A.-3
B.-3/2
C.-2/3
D.2/3
E.3/2
第1题
e is 28 inches.What is the width of the rectangle, in inches?
A.5
B.7
C.10
D.12
E.14
第2题
eet in diameter. The finished tablecloth needs to hang down5inches over the edge of the table all the way around.To finish the edge of the tablecloth, Kirk will foldunder and sew down 1inch of the material all aroundthe edge. Kirk is going to use a single piece of rectan-gular fabric that is 60 inches wide. What is the shortestlength of fabric, in inches, Kirk could use to make thetablecloth without putting any separate pieces of fabrictogether?
A.15
B.24
C.30
D.42
E.48
第3题
Solve the following equation for A : 2A/3 = 8 + 4A
A.-2.4
B.2.4
C.1.3
D.-1.3
E.0
第4题
on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?
A.$280.90
B.$287
C.$292.50
D.$306
E.$333.89
第5题
hat is the average of all five numbers?
A.3
B.17/4
C.22/5
D.9/2
E.5
第6题
t what point?
A.(0,0)
B.(0,-3)
C.(-3,0)
D.(-3,-3)
E.(-3,-6)
第7题
For real numbers a and b, when is the equation ∣a+b∣=∣a–b∣true?
A.Always
B.Only when a=b
C.Only when a=0 and b=0
D.Only when a=0 or b=0
E.Never
第8题
e. The charge forthe use of the plane varies directly with the square root of the time the plane is used. If a lesson plus 16 minutes of plane usage costs $90, what is the total amount charged for a lesson having 36 minutes of plane usage?
A.$185
B.$150
C.$135
D.$110
E.$60
第9题
What is the area of the stained-glass panel, to the nearest 0.1 square foot?
A.3.1
B.4.0
C.6.2
D.8.0
E.12.6
第10题
(a + 2b + 3c) - (4a + 6b -5c) is equivalent to:
A.-4a - 8b - 2c
B.-4a - 4b + 8c
C.-3a + 8b - 2c
D.-3a - 4b - 2c
E.-3a - 4b + 8c
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