Questions on Algebra: Decimal numbers, power of 10, rounding answered by real tutors!

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Question 551086: find the sum of the series
using this symbol for the following problems: ------> Ʃ
please show your work because i don't know how to do these. Also on 51 the answer is 1110 but how? so work on each of the problems would be very liked.
thank you for ur help and happy new year!
51. 20 on top of symbol, i=1 on bottom,(3+5i) on right
52. 34 on top, i=1 on bottom,(1+8i) on right
53. 15 on top, i=1 on bottom, (-10-3i) on right
54. 22 on top, i=1 on bottom, (6-3/4i) on right
55. 45 on top, i=1 on bottom, (11+4i) on right
56. 18 on top, i=1 on bottom, (8.1+4.4i) on right

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Question 552004: write each of these numbers using four decimal places: (a)25.3 (b) 0.4300000
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Question 557201: what are thee three main states of matter
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Question 566517: how can i put 6550 in scientific notation?
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Question 569417: what is 229.88 divided by 2.8
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Question 570785: the end of a ladder is sitting on the ground 6 feet from a wall and as it leans against a wall the top of the ladder hits a spot 8 feet up the wall. how long is the ladder?
Click here to see answer by mananth(12270) About Me 

Question 571505: I have a homework problem that I unfortunately do not understand how to set up to get the answer. My question is to "express the given repeating decimal as a quotient of integers. If possible reduce to lowest terms." It is the repeating decimal 0.71...
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Question 571505: I have a homework problem that I unfortunately do not understand how to set up to get the answer. My question is to "express the given repeating decimal as a quotient of integers. If possible reduce to lowest terms." It is the repeating decimal 0.71...
Click here to see answer by josmiceli(9697) About Me 

Question 572273: How would you write 10 to the -6 in decimal form? Also, another problem, 6x10 to the -3? If you can send me the answer, and how you got that, as SOON as possible, like later on today, or early-bout 7 or 8 in the morning, I would TRULY AND GLADLY appreciate it!


2/13/12

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Question 572636: 0.09% convert to decimal
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Question 581769: in your lesson "This Lesson (WHAT IS a decimal)" i believe you may have a typo at the very end. 2.2/5=2.2 but i think it should be 2.2/5=2.4 hope this helps and if i'm wrong please email me or even if i'm right that would be cool thanks
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Question 582717: Round 812.7863 to the nearest hundredth
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Question 582871: Sorry, I'm not sure I picked the right topic but I need to know how to convert 13.3 into a percent. If I am correct it is .133?? Here is the question I am trying to answer. 'What percentage of total carpet will be used in the master bedroom?" I computed that the total carpet being used throughout the house is 430 sq ft which is 47.7 sq yards. The master bedroom is 120 sq ft which is 13.3 sq yards. So, should I divide 13.3 by 47.7 or 13.3 by 100??
Click here to see answer by jim_thompson5910(28598) About Me 

Question 582873: SIMPLIFY THE EXPRESSION
5+4*(8-6)^2

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Question 585259: how do I convert these repeating decimals, 0.7, 2.37 and -4.34

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Question 586117: How do you Subtract decimals?

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Question 586117: How do you Subtract decimals?

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Question 587869: Please help me solve this problem!!
Jill took five courses this semester, each for four credit hours. She received a B (3 points) a B+ (3.5 points), an A (4 points), and a B+ (3.5 points) in four of the courses. If her GPA is 3.2, what was her grade in the fifth course?

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Question 588196: how do you divide 4.9 into 0.7?
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Question 588405: 11/25 as a decimal notation
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Question 590417: How do you get the solution 10.01 in word form to ten and one hundreths?
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Question 599517: How is it that 3/4 and .75 are not equal? On of the questions it puts .75 as .0075. It is a comparison question.
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Question 599836: How to find the answer to 8/1.1
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Question 601579: WHAT IS 0.9 ROUNDED TO THE NEAREST TENTH ?
THANK YOU !

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Question 601579: WHAT IS 0.9 ROUNDED TO THE NEAREST TENTH ?
THANK YOU !

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Question 601581: what is 48.95 rounded to the nearest tenth ?
Thanks

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Question 601581: what is 48.95 rounded to the nearest tenth ?
Thanks

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Question 601582: What is 548.48 Rounded ti the nearest hundred ?
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Question 601806: WHAT IS 548.48 ROUNDED TO NEAREST HUNDRED ?
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Question 602101: What is 174.57 rounded to the nearest hundreds place ?
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Question 602744: WHAT IS 987.4 ROUNDED TO NEAREST HUNDRED ?
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Question 602894: WHAT IS 849.47 ROUNDED TO NEAREST HUNDRED ?
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Question 589949: 3.582 rouned to the nearest tenth
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Question 603466: WHAT IS 174.57 ROUNDED TO NEAREST HUNDRED ?

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Question 603466: WHAT IS 174.57 ROUNDED TO NEAREST HUNDRED ?

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Question 603465: WHAT IS 0.549 ROUNDED TO NEAREST TENTH ?
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Question 603465: WHAT IS 0.549 ROUNDED TO NEAREST TENTH ?
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Question 603509: I am stuck on a math decimal question.
What is 174.57 rounded to nearest hundred ?

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Question 597735: 6:24=0.75:x
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Question 579473: how to write 0.076 as a mixed number
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Question 606121: What is 40/100 in decimals and percentage?

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Question 607690: What is 238.8571 rounded to the nearest tenth?
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Question 607690: What is 238.8571 rounded to the nearest tenth?
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Question 608064: round this number to the nearest hundreth 8.662
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Question 609398: What is 0.9 rounded to nearest tenth ?
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