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anonymous
 one year ago
can you check my answers please
anonymous
 one year ago
can you check my answers please

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.01. Simplify. 5–1(3–2) (1 point) A)45 B)1/45 C)15^–3 D)15^2  2. Simplify. mn^4/p^0q^2 (1 point) A)mq^2/n^4 B)mp/n^4 C)mn^4q^2p^0 D)q^2/mn^4  3. Write in scientific notation. 0.0042 (1 point) A)42 × 10^2 B)4.2 × 10^4 C)4.2 × 10^3  D).42 × 10^4 4. Write in standard notation. 6.12 × 10^3 (1 point) A)6,120  B)612 C)61,200 D)61.2 5. Simplify. Write in scientific notation. 0.5(8 × 10^5) (1 point) A)8 × 5^5 B)4 × 5^5 C)8 × 10^5 D)4 × 10^5  6. Simplify. Write in scientific notation. (9 × 10^3)^2 (1 point) A)8.1 × 10^5 B)81 × 10^4 C)81 × 10^3 D)8.1 × 10^6  7. Evaluate 1/2a^4b^2 for a = –2 and b = 4. (1 point) A)2  B)1/2 C)3 D)4 8. Is the following statement always, never, or sometimes true? A number raised to a negative exponent is negative. (1 point) A)always B)never C)sometimes  9. Simplify (4xy^2)^3(xy)^5 (1 point) A)64x^8y^11 B)64x^15y^30 C)12x^2y^11 D)12x^8y^11  10. Simplify (2t^3)^3(0.4r)^2 (1 point) A)3.2r^2 B)1.28r^2/t^6  C)1.28r^2/t^9 D)0.8r^2/t^6
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