Q.29.) Subtract 6xy from -12xy? *
A.) 6xy
B.) 18xy
C.) -18xy
D.) None of these
Q.30.) Add 3mn, -5mn, 8mn, -4mn? *
A.) -2mn
B.) 2mn
C.) 20mn
D.) -20mn
Q.31.) Simplify in exponential form (25)⁴ ÷ 5³ ? *
A.) 5²
B.) 5³
C.) 5⁴
D.) 5⁵
Answers
Answered by
1
Answer:
i) c
ii) b
iii) d
Step-by-step explanation:
i) -12xy-6xy = -18 xy
ii) 3mn+8mn-5mn-4mn=2mn
iii) (25)⁴ ÷ 5³ =( 5²)⁴÷5³=5^5
Answered by
3
Answer:
Q29. C) -18xy
Q30. B) 2mn
Q31. D) 5⁵
Step-by-step explanation:
Q29. Subtract 6xy from -12xy?
Answer:
-12xy - 6xy
= -18xy
ΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞ
Q30. Add 3mn, -5mn, 8mn, -4mn?
Answer:
3mn + (-5mn) + 8mn + (-4mn)
= 3mn - 5mn + 8mn - 4mn
= 2mn
ΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞΞ
Q31. Simplify in exponential form (25)⁴ ÷ 5³?
Answer:
(25)⁴ ÷ 5³
= (5²)⁴ ÷ 5³
= 5⁸ ÷ 5³
= 5⁽⁸⁻³⁾
= 5⁵
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