Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.
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Question 1421: If y = (1 + x)2, find
Options:
A) x - 1
B) 2 + 2x
C) 1 + 2x
D) 2x - 1
Show Answer
The correct answer is B .
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Question 1422: The number of telephone calls N between two cities A and B varies directly as the population PA, PB respectively and inversely as the square of the distance D between A and B. Which of the following equations represents this relation?
Options:
A) N =
B) N =
C) N =
D) N =
Show Answer
The correct answer is B .
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Question 1423: Simplify and express in standard form
Options:
A) 8.8 x 10-1
B) 8.8 x 10-2
C) 8.8 x 10-3
D) 8.8 x 103
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The correct answer is C .
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Question 1424: If y = x sinx, find dy/dx when x = π/2.
Options:
A) -π/2
B) -1
C) 1
D) π/2
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The correct answer is C .
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Question 1425: Factorize completely 9y2 - 16X2
Options:
A) (3y - 2x)(3y + 4x)
B) (3y + 4x)(3y + 4x)
C) (3y + 2x)(3y - 4x)
D) (3y - 4x)(3y + 4x)
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The correct answer is D .
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Question 1426: In the diagram above, PQ//Rs. The size of the angle marked x is
Options:
A) 100
B) 80
C) 50
D) 30
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The correct answer is B .
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Question 1427:

In the diagram, STUV is a straight line. < TSY = < UXY = 40o and < VUW = 110o. Calculate < TYW
Options:
A) 150o
B) 140o
C) 130o
D) 120o
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The correct answer is A .
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Question 1428: Find the inverse
Options:
A)
B)
C)
D)
Show Answer
The correct answer is B .
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Question 1429:

In the diagram PQ is parallel to RS. What is the value of
Options:
A) 180
B) 90
C) 360
D) 200
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The correct answer is C .
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Question 1430: Evaluate , correct to 1 decimal place
Options:
A) 0.6
B) 6.2
C) 6.3
D) 0.5
Show Answer
The correct answer is A .