Asked by Dave
8.A number raised to a negative exponent is negative.
Always, never , or sometimes.
7. Evaluate 1/2a^-4b^2 a = -2 and b = 4.
6. Simplify. Write in scientific notation. (9 x 10^-3)^2
Thanks to anyone who helps right away and need right answer from the people who have already taken this test.
Always, never , or sometimes.
7. Evaluate 1/2a^-4b^2 a = -2 and b = 4.
6. Simplify. Write in scientific notation. (9 x 10^-3)^2
Thanks to anyone who helps right away and need right answer from the people who have already taken this test.
Answers
Answered by
Reiny
8.
4^-3 = 1/4^3 = 1/64
(-2)^-3 = 1/(-2)^3 = 1/-8
7 , the way you typed it ...
(1/2)a^-4 b^2
= (1/2)(1/(-2)^4 (4)^2
= (1/2)(1/16)(16) = 1/2
6. (9 x 10^-3)^2 = 1.8 x 10^-6
4^-3 = 1/4^3 = 1/64
(-2)^-3 = 1/(-2)^3 = 1/-8
7 , the way you typed it ...
(1/2)a^-4 b^2
= (1/2)(1/(-2)^4 (4)^2
= (1/2)(1/16)(16) = 1/2
6. (9 x 10^-3)^2 = 1.8 x 10^-6
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