![lillovecandy](/avatars/37916.jpg)
lillovecandy
02.07.2019 •
Mathematics
Which expression does not have the value 1/81 a. 3-2 • 3-2 b. 3-4 c. (3-2)2 d. -32 • -32
Solved
Show answers
More tips
- S Style and Beauty How to braid friendship bracelets?...
- S Style and Beauty Learn how to tie a keffiyeh on your head like a pro...
- F Food and Cooking Delight for Gourmets: How to Prepare Liver Pate...
- C Computers and Internet How to Learn to Type Fast?...
- H Health and Medicine Angina: Causes, Symptoms, and Treatment...
- D Dating, Love, Relationships How to Overcome Jealousy: Tips and Tricks...
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Start Your Own Business: Tips and Recommendations...
- F Food and Cooking How to Make Delicious Cabbage Pies: The Best Recipes!...
- F Food and Cooking Discover Delicious Recipes You Can Make with Ground Meat...
Answers on questions: Mathematics
- M Mathematics 4n^2 -15n+9 factor completely...
- M Mathematics What is the reciprocal of 7/g...
- M Mathematics Solve: 2a-3b=52a−3b=5 a+b=10...
- M Mathematics Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he do?...
- M Mathematics Which number is equivalent to (1/3)^-4 A.12 B.81 C.1/12 D.1/81...
- M Mathematics Albie s total income is $695.25 in a week where his sales are $2870. If he earns acommission of 7.5% of his sales, what ishis retainer? can you tell me how to work it out aswell please...
- M Mathematics Write an algebraic equation for the word phrase: 8 more than the product of 6 and n is 20. Question 2 options: 6(8 + n) = 20 8(6 + n) = 20 8 + 6 + n = 20 8 + 6n = 20...
- M Mathematics What is the answer 9x plus 2 (2x+3)...
- M Mathematics Instructions Use the following scenario to answer the following questions. Real World Context Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect an additional...
- M Mathematics Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after 1 1/2 years if the interest is (i) compounded...
Ответ:
I see.
The correct way to write these is
A: 3^-2 * 3^ - 2 = 1/9 * 1/9 = 1/81 and this one is fine.
B: 3^-4 = (1/3)^ 4 = 1/3 * 1/3 * 1/3 * 1/3 = 1/81 and this one works.
C: (3^-2)^2 = (1/9)^2 = 1/81 and this one also works.
D: No matter how you interpret this, it is not going to equal 1/81. I think it might be written as -(3)^2 * - (3)^2 = - 9 * - 9 = 81 which is not correct.
D
Ответ: