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 771: 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)
Show Answer
The correct answer is D .
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Question 772: The amount A to which a principal P amounts at r% compound interest for n years is given by the formula A = P(1 + (r ÷ 100))n. Find A, if P = 126, r = 4 and n = 2.
Options:
A) ₦132.50K
B) ₦136.30K
C) ₦125.40K
D) ₦257.42K
Show Answer
The correct answer is B .
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Question 773: If angle is 135o, evaluate cos
Options:
A)
B)
C)
D)
Show Answer
The correct answer is B .
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Question 774: If sin x = cos 50o, then x equals
Options:
A) 40o
B) 45o
C) 50o
D) 90o
E) 130o
Show Answer
The correct answer is A .
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Question 775: If ,evaluate
Options:
A) 5/8
B) 5/2
C) 5/4
D) 5/16
Show Answer
The correct answer is B .
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Question 776:
A cylindrical tank has a capacity of 3080m. What is the depth of the tank if the diameter of its base is 14m?
Options:
A) 25m
B) 23m
C) 22m
D) 20m
Show Answer
The correct answer is D .
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Question 777: A binary operation * is defined on the set of positive integers is such x*y = 2x-3y+2 for all positive integers x and y. The binary operation is
Options:
A) commutative and close on the set of positive integers
B) neither commutative nor closed on the set of ppositive integers
C) commutative but not closed on the set of positive integers
D) not cummutative but closed on the set of positive integers
Show Answer
The correct answer is B .
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Question 778: An arc of a circle of length 22 cm subtends an angle of 3x at the center of the circle. Find the value of x if the diameter of the circle is 14 cm
Options:
A) 60
B) 120
C) 180
D) 30
Show Answer
The correct answer is A .
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Question 779:
I. Rectangular bars of equal width
II. The height of each rectangular bar is proportional to the frequency of the corresponding class interval.
III. Rectangular bars have common sides with no gaps in between
A histogram is described completely by
Options:
A) I, II and III
B) I and II
C) II and III
D) I and III
Show Answer
The correct answer is A .
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Question 780: Find the non-zero positive value of x which satisfies the equation = 0
Options:
A) 2
B) 4
C) √3
D) √2
E) 1
Show Answer
The correct answer is A .