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[主观题]

If the average of four numbers is 4, and if the number 6 is added to these four numbers, w

hat is the average of all five numbers?

A.3

B.17/4

C.22/5

D.9/2

E.5

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更多“If the average of four numbers is 4, and if the number 6 is added to these four numbers, w”相关的问题

第1题

When graphed in the standard (x,y) coordinate plane, the lines x= –3 and y=x–3 intersect a

t what point?

A.(0,0)

B.(0,-3)

C.(-3,0)

D.(-3,-3)

E.(-3,-6)

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第2题

For real numbers a and b, when is the equation ∣a+b∣=∣a–b∣true?A.AlwaysB.Only when a=bC.On

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

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第3题

A flight instructor charges $50 per lesson, plus an additional fee for the use of his plan

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

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第4题

What is the area of the stained-glass panel, to the nearest 0.1 square foot?A.3.1B.4.0C.6.

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

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第5题

(a + 2b + 3c)- (4a + 6b -5c) is equivalent to:A.-4a - 8b - 2cB.-4a - 4b + 8cC.-3a + 8b - 2

(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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第6题

If 9(x- 9) = -11, then x = ?A.-92/9B.-20/9C.-11/9D.-2/9E.70/9

If 9(x - 9) = -11, then x = ?

A.-92/9

B.-20/9

C.-11/9

D.-2/9

E.70/9

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第7题

Joelle earns her regular pay of $7.50 per hour for up to 40 hours of work in a week. For e

ach hour over 40 hours of work in a week, Joelle is paid 1 times her regular pay. How much does Joelle earn for a week in which she works 42 hours?

A.$126.00

B.$315.00

C.$322.50

D.$378.00

E.$472.50

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第8题

Meg pounded a stake into the ground. When she attached a leash to both the stake and her d

og’s collar,the dog could reach 9feet from the stake in any direc-tion. Using 3.14 for π, what is the approximate area ofthe lawn, in square feet, the dog could reach from thestake?

A.28

B.57

C.113

D.254

E.283

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第9题

What is the least common denominator for adding the fractions 4/15,1/12, and 3/8?A.40B.120

What is the least common denominator for adding the fractions 4/15,1/12, and 3/8?

A.40

B.120

C.180

D.480

E.1440

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第10题

To keep up with rising expenses, a motel managerneeds to raise the $40.00 room rate by 22%

. What willbe the new rate?

A.$40.22

B.$42.20

C.$48.00

D.$48.80

E.$62.00

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