Default Title

Question (31)

QN0015537

The simplified form of l + b + l + b is:

(A) 2lb
(B) 2l + 2b
(C) l² + b²
(D) 4lb

Correct Answer: B

Explanation:

Combine like terms.

Link:

Report Error

Question (32)

QN0015538

If l = 12 and b = 8, the perimeter of the rectangle is:

(A) 20
(B) 40
(C) 96
(D) 192

Correct Answer: B

Explanation:

2 × 12 + 2 × 8 = 40.

Link:

Report Error

Question (33)

QN0015539

Which pair consists of like terms?

(A) 18c and 11d
(B) 5x and 5y
(C) 12n and –4n
(D) 7a and 7b

Correct Answer: C

Explanation:

Like terms have the same variable.

Link:

Report Error

Question (34)

QN0015540

Simplify: 5c + 3c + 10c

(A) 18
(B) 18c
(C) 15c
(D) 8c

Correct Answer: B

Explanation:

(5 + 3 + 10)c = 18c.

Link:

Report Error

Question (35)

QN0015541

Simplify: 12n – 4n

(A) 48n
(B) 8
(C) 8n
(D) 16n

Correct Answer: C

Explanation:

(12 – 4)n = 8n.

Link:

Report Error

Question (36)

QN0015542

A pattern repeats as A, B, C, A, B, C, ... The position of the nth occurrence of C is:

(A) 3n – 2
(B) 3n – 1
(C) 3n
(D) n + 3

Correct Answer: C

Explanation:

C appears at multiples of 3.

Link:

Report Error

Question (37)

QN0015543

In the same repeating pattern, the position of the nth occurrence of B is:

(A) 3n – 1
(B) 3n
(C) 3n + 1
(D) 3n – 2

Correct Answer: A

Explanation:

B appears one position before C.

Link:

Report Error

Question (38)

QN0015544

In the same pattern, the position of the nth occurrence of A is:

(A) 3n
(B) 3n – 1
(C) 3n + 1
(D) 3n – 2

Correct Answer: D

Explanation:

A appears two positions before C.

Link:

Report Error

Question (39)

QN0015545

Design A, B, C repeat in order. Which design appears at position 122?

(A) A
(B) B
(C) C
(D) Cannot be determined

Correct Answer: A

Explanation:

122 ÷ 3 leaves remainder 2, so Design A appears.

Link:

Report Error

Question (40)

QN0015546

Which statement best explains why letter-numbers are useful in mathematics?

(A) They replace arithmetic completely.
(B) They allow general relationships and patterns to be written concisely.
(C) They are used only for geometry.
(D) They make calculations unnecessary.

Correct Answer: B

Explanation:

Letter-numbers help express general patterns and relationships.

Link:

Report Error

Question (31)

The simplified form of l + b + l + b is:

Explanation:

Link:

Question (32)

If l = 12 and b = 8, the perimeter of the rectangle is:

Explanation:

Link:

Question (33)

Which pair consists of like terms?

Explanation:

Link:

Question (34)

Simplify: 5c + 3c + 10c

Explanation:

Link:

Question (35)

Simplify: 12n – 4n

Explanation:

Link:

Question (36)

A pattern repeats as A, B, C, A, B, C, ... The position of the nth occurrence of C is:

Explanation:

Link:

Question (37)

In the same repeating pattern, the position of the nth occurrence of B is:

Explanation:

Link:

Question (38)

In the same pattern, the position of the nth occurrence of A is:

Explanation:

Link:

Question (39)

Design A, B, C repeat in order. Which design appears at position 122?

Explanation:

Link:

Question (40)

Which statement best explains why letter-numbers are useful in mathematics?

Explanation:

Link:

Excel With Tutors

ExcelWithTutors

For Student

For Tutors

Learn

OUR POLICY