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unknownyobutt21
21.10.2019 •
Mathematics
What is the simplified form of 3a^4b^-2c^3?
a. (81a^4c^3)/(b^2)
b. (81a^4)/(b^2c^3)
c. (3a^4)/(b^2c^3)
d. (3a^4c^3)/(b^2) d what is -a^-2 if a = -5?
a. -25
b. 25
c. -1/25
d. 1/25 d what is (-m)^-3n if m = 2 and n = -24?
a. 3
b. -3
c. 4
d. -4 a
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Ответ:
= ( 3 a^4 * 4 c^3 ) / ( b^2 )
d.
2. If a = - 5,
- a^(-2) = - ( - 5 )^(-2) = - ( 1/ 5^2 ) = - 1/25
c.
3. If m = 2 and n = - 24:
( - 2 )^(-3) * ( - 24 ) = 1 / (- 2 )^3 * ( - 24 ) = - 1 / 8 * ( - 24 ) = 24 / 8 = 3
a. 3
Ответ:
1. The correct option is d.
2. The correct option is c.
3. The correct option is a.
Step-by-step explanation:
1.
The given expression is
Using property of exponent the given expression can be written as
Therefore, the correct option is d.
2.
The given expression is
Using property of exponent the given expression can be written as
Put a=-5
Therefore option c is correct.
3.
The given expression is
Using property of exponent the given expression can be written as
Put m=2 and n=-24.
Therefore option a is correct.
Ответ:
Choice B is right for edge