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 721:
In the diagram, POS and ROT are straight lines, OPQR is a parallelogram. |OS| = |OT| and ∠OST = 50o. Calculate ∠OPQ.
Options:
A) 160o
B) 140o
C) 120o
D) 100o
Show Answer
The correct answer is D .
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Question 722: 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 .
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Question 723:
.
Find the standard deviation of the above distribution.
Options:
A) √5
B) √6
C) √7
D) √2
Show Answer
The correct answer is B .
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Question 724: The sum of the interior angles of a polygon is a given as 1080o. Find the number of the sides of the polygon.
Options:
A) 5
B) 7
C) 6
D) 8
Show Answer
The correct answer is D .
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Question 725:
PQRS is a rhombus. If PR2 + QS2 = KPQ2, determine k
Options:
A) 1
B) 2
C) 3
D) 4
Show Answer
The correct answer is D .
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Question 726: Find the sum to infinity of the following series. 0.5 + 0.05 + 0.005 + 0.0005 + .....
Options:
A)
B)
C)
D)
Show Answer
The correct answer is D .
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Question 727: Factorize completely x2+2xy + y2+3x + 3y - 18
Options:
A) (x+y+6)(x+y-3)
B) (x-y-6)(x-y+3)
C) (x-y+6)(x-y-3)
D) (x+y-6)(x+y+3)
Show Answer
The correct answer is A .
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Question 728: = k x 10n where 1 k < 10 and n is a whole number. The values K and n are
Options:
A) 7.381 qnd -11
B) 2.34 and 10
C) 3.871 and 2
D) 7.831 and -11
Show Answer
The correct answer is A .
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Question 729: If y = x2 - (1/x). find dy/dx
Options:
A) 2x - (1/x2)
B) 2x + x2
C) 2x - x2
D) 2x + (1/x2)
Show Answer
The correct answer is D .
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Question 730: Calculate the mid point of the line segment y - 4x + 3 = 0, which lies between the x-axis and y-axis.
Options:
A)
B)
C)
D)
Show Answer
The correct answer is A .