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

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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(6776)

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?
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Question 569417: what is 229.88 divided by 2.8
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Question 566517: how can i put 6550 in scientific notation?
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Question 557201: what are thee three main states of matter
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Question 552004: write each of these numbers using four decimal places: (a)25.3 (b) 0.4300000
Click here to see answer by jerryguo41(106)

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 549955: Sum of three positive integers is 2^2011 + 1, and the product of two of them is 2^2011.how many values can the third integer take?
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Question 548347: .4

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Question 548289: So I have a question i'm doing pre-algebra and i'm having a little trouble so the question is 3m over 15m to the third power and in my book it says something like take the top variable subtracted (-) by the bottom variable and usually if its like m we just make it m to the first power but in the book it shows the bottom number (15) as a one (1) well the problem in the book is 5 to the 6th power over 5 to the 8th power and it takes 6-8 and gets -2 so its 5 to the -2nd power over 5 and it changes it to 1 over 5 to the 2nd power and i'm not sure if everyone of the bottom numbers should be changed to 1 or not so yea I tried it and i'm confused and I did all of the other ones and I think I got them right but i'm just stumped by this one and I've tried and tried but i'm stuck so yea please help me. Wow that was a really long run on sentence but yea thanks.
Click here to see answer by mathie123(175)

Question 547914: One problem on my homework is "It took 86 hours for joe kittinger
To cross the Atlantic in his ballon, Rosie O'Grady, a distance of 3543 miles.
What was the average speed of the ballon ? Round to the nearest tenth ."
So i tried to divide 3543 by 86 and came up with 41.1976744 but it seems
Kind of impossible to round to the nearest tenth . Can you help please ?
Thank You !
Click here to see answer by josmiceli(6774)

Question 547864: 1. If Lynn can type a page in p minutes, what piece of the page can she do in 5 minutes?
A. 5/p
B. p - 5
C. p + 5
D. p/5
E. 1- p + 5

Click here to see answer by stanbon(48510)

Question 522997: Jake's take-home pay for his first week of fruit picking was $800.
His expenses for that week were:
Accommodation $125
Food $150
Entertainment $40
Transport $35
What fraction of Jake's pay was spent on entertainment? Simplify fully.
Click here to see answer by JBarnum(1826)

Question 530610: what is a rectangle that is twice as long and it is wide which still has a perimter and a numerically equal to its area
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Question 529729: how do you write a decimal as a power of 10?
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Question 533532: Multiply. Simplify your answer as much as possible
-9a^4c^6(6c^5-4a+5)
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Question 536885: (2^4 – 8)divided by 4
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Question 537616: can any mumber of the form aabb be a perfect square?
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Question 537867: original:50
new:70
please help me solve this equation
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Question 539406: what goes in order from least to greatest, 0.067, 0.6, 0.76, 0.07
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Question 544231: 12.3 rounded to 10
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Question 543354: how to convert a decimal
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Question 542663: What are the two ways that 0.09 equal 1?
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Question 546007: Factor 55^4 into the product of prime factors by first factoring 55 and then raising each of its factors to the fourth power.
^-means the power to the number
Click here to see answer by ankor@dixie-net.com(12684)

Question 545299: 1. Convert the binary number 111,000,111 into the base ten equivalent.
2. Convert the base ten number 111 into the binary equivalent.
3. Convert the decimal number 0.35743574357435743574357435743574 to a fraction
Click here to see answer by Edwin McCravy(6931)

Question 541791: I am working on 'notations', and understand how to work out things like '5 to the power of 4'...but now I need to work in reverse and I can't work out how to do that without just using trial and error! The first question I was lucky, as I'd already worked out '5 to the power of 4' as an earlier question so knew when asked to 'simlify 625' that it was 5 to the power of 4 (large 5 then little 4 - can't figure out how to type that on the computer!). The next question is 'simplify 729'....there are another 8 similar questions...I can't just run through each number trying to times it by itself until it hits the right answer or goes over so then move onto the next number!
My question is, what is the mathmatical/scientific/proper way to do this! If you need a specific question, simplify 729 is fine, but I need how to work it out more than I need the actual answer to that question!
I'm sorry if I've gone to the wrong section. Thank-you for your time and patience.
Lily
Click here to see answer by mananth(10539)

Question 540587: Assuming 2’s complement 8-bit representation, consider the following:
+70 = 010001102
+80 = 010100002
100101102 Is this correct? Why or why not?
Click here to see answer by Alan3354(21550)

Question 539163: 120.00 - 50.75
Click here to see answer by Mathpassionate(25)

Question 536191: convert these repeating decimals.
1. 99.999 42.242424 57.357357357
2.Divide this binary number 10,010,101 x1010
3. suppose that a rectangle has the length L and width W that happen to be whole numbers. Recall that the perimeter P of a rectangle is the sum of its sides. If you are told that P is even what can you conclude about whether L or W is even or odd?on the other hand you were told P was odd now what would you say?
Click here to see answer by fcabanski(385)

Question 531714: Estimate by rounding to the nearest number:1,576-150.

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Question 529782: 4.2-3=
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Question 527022: how do i solve , not by CALCULATOR, writen out, (4.65) to the third power. I know how to solve it to the second power , but i've never done it to the third?
please help.
Click here to see answer by Alan3354(21550)

Question 526400: Could you please help me with part b? the answer to part a is 6.48.
A) a baseball pitcher has pitched a total of 25 innings so far during the season and has allowed 18 runs. At this rate how many runs would he allow in 9 innigs? This number is called the pitcher's ERA.
B) Randy Johnson had an ERA of 2.64 in 2000. At this rate, how many runs would he be expected to allow in 100 innings pitched?
Click here to see answer by ankor@dixie-net.com(12684)

Question 524662: hello my name is Jade and I need to see a example of division problems with decimals.
Click here to see answer by solver91311(12118)

Question 523107: how do i type square on a key pad, as in E=MC square
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Question 522901: what is 27,897.465 rounded to the nearest tens place?
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Question 522079: The sum of ages of a woman and her daughter is 46 years in 4 years time, the ratios of their age will be 7:2, find the present age
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Question 520324: what is the answer to 3.77 times 10 to the 4th power?
my answer is 37,700 is this correct?

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Question 520177: express 0.07569 to 3 significant figures
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Question 519287: is .08>.067?
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Question 516246: 24/10 as a mixed number
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Question 515984: What is the percentage equivalent of 1.4 x 10 to the 16 th power.
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Question 514893: 50.2-600 how do I solve this problem I tried the subracting way I just couldn't do it can you please help me. Thank you
Click here to see answer by ankor@dixie-net.com(12684)

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