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

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Algebra: Decimal numbers, power of 10, rounding

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Question 181287: could someone please show me how to solve these 2 problems :
The problem states,Solve for the unknown (X) in the following proportions:
1) 2/10 = 16/x x =
2) 7/30 = x/90 x =

Thank you so much in advance
Click here to see answer by Mathtut(3670)

Question 180915: This is acually scientific notation:
200x10^-3
Simplify 10^-3

Click here to see answer by carter6949(26)

Question 160497: multiply (984.5)(1000)
Click here to see answer by carter6949(26)

Question 134482: Please explain why it is that -3^4=-81(a negitive number),
yet, -(3)^4=81, a positive number.
Is it because 2 negitives= a positive?
Click here to see answer by carter6949(26)

Question 130193: Demical Notation of 600%
Click here to see answer by carter6949(26)

Question 123101: directions: express each fraction as a decimal in simplest form. i expressed 4/5 into the decimal 0.8. am i correct?
Click here to see answer by carter6949(26)

Question 108627This question is from textbook prentice hall practice workbook
: 8.5 times 10times the power of 3=
8.5x10^3This question is from textbook prentice hall practice workbook

Click here to see answer by carter6949(26)

Question 100481: complete the following statement using the system < or >
5/16 < or > 0.313
Click here to see answer by carter6949(26)

Question 96660: 1.write the following meassurements in scientfic
a. 800 000 000m
b. 0.0015kg
c. 600 200L
d. 0.00095m
e 8 002 000km
f.0.000 000 000 06kg
Click here to see answer by carter6949(26)

Question 51807: how do you solve these 2 problems.
9-6^2/4+12*4/2^4-3
789.3+4.287+13+2.9

Click here to see answer by carter6949(26)

Question 183811: Explain why shifting the decimal point in a number is equivalent to multiplying or dividing a number by a power of ten.
Click here to see answer by stanbon(26259)

Question 183917: 500^3=s^3
The volume of a cube is given by V=s^3 where the length of a side , Find the length of a side of a cube if the volume is 500cm^3. Round answer to three decimal places
Click here to see answer by edjones(3291)

Question 184502: 2√27x^5y
Click here to see answer by jim_thompson5910(13787)

Question 185472: The decimal number 75 is equivalent to what base four number?
Click here to see answer by jim_thompson5910(13787)

Question 186939This question is from textbook Pre-Algebra
: What is the value of 9 in 365,791?This question is from textbook Pre-Algebra

Click here to see answer by sowmya(32)

Question 187129: ex:2.5 multiply by 10exponant neg 5
Click here to see answer by jim_thompson5910(13787)

Question 100484: which is the best price per unit?
0.065, 0.0546, 0.0688, 0.0679
Click here to see answer by Alan3354(6059)

Question 187193: in six hours A Walks 10 kilometers more than B does in 5 hours; and in 8 hours B walks seven kilometers more than A does in 5 hours. what are the speed of each person?
Click here to see answer by vleith(1977)

Question 187677: I need help.
Calculate.
(5 * 10^4)^2
Write answer in scientific notation.
Click here to see answer by stanbon(26259)

Question 187677: I need help.
Calculate.
(5 * 10^4)^2
Write answer in scientific notation.
Click here to see answer by jim_thompson5910(13787)

Question 187765This question is from textbook Saxon

: Solve:
2.2x - 0.1x + 0.02x= -2 - 0.12
what is x?This question is from textbook Saxon

Click here to see answer by checkley77(7035)

Question 188502: 3.2 divided by $22.24 = ?
Click here to see answer by Mathtut(3670)

Question 135722: Explain why 2√2 is in simplest form and √8 is not in simplest form.
Click here to see answer by carter6949(26)

Question 191258: Write the number without exponents.
2.78x10^10
Click here to see answer by jim_thompson5910(13787)

Question 192519: How do you round a deccimal to the nearest tenth, if it has no hundreth place?
Ex: 0.9 and 0.8 Need help with these two problems only please
Click here to see answer by Mathtut(3670)

Question 193444: I need to perform the indicated operations 0.59 + (-3.4)
Click here to see answer by Alan3354(6059)

Question 194915: i would appreciate this problem being worked out 0.106 x power of 10 to a minus 5 i cant get a small minus 5 up beside the 10 ...thanks
Click here to see answer by Mathtut(3670)

Question 194911: I need help with this please.
0.4+0.44+0.444
Click here to see answer by Mathtut(3670)

Question 194992: how can i put 97,700,000,000,000,000,000,000,000 in word format
Click here to see answer by Alan3354(6059)

Question 121825This question is from textbook New Progress in Mathematics
: Pg 148 scientific notation
Problem reads... A laser light printer prints one character in 2.5X10 to the negative 5 seconds. A certain document takes 10 minutes to print. How many characters are contained in the document.This question is from textbook New Progress in Mathematics

Click here to see answer by Alan3354(6059)

Question 195472: Ben is making wooden toys for the next arts and crafts sale. Each toy costs Ben $1.80 to make. If he sells the toys for $3.00 each, how many will he have to sell to make a profit of extactly $36.00?
Click here to see answer by solver91311(5072)

Question 195497: When reading money amounts, do you read the decimal point as "and"?
Example: Five dollars "and" thirty-five cents, or five dollars, thirty-five cents.
Click here to see answer by Alan3354(6059)

Question 198466This question is from textbook beginning algebra

: Let me set up the question:
As of February 2001, Gap Inc. operated a total of 3676 stores worldwide. The following chart shows the store breakdown by brand.
Gap (Domestic) - 2076
Gap (International) - 529
Banana Republic - 404
Old Navy - 666
Total - 3678
Question #95 - What fraction of Gap brand stores were Old Navy stores? Simplify this fraction.
Answer: the answer I got on the calc. wa .181076672; when my calc. translated this into a fraction I got. 111/613
I cannot figure out how (with pencil & paper) to get this same fraction. my answer is always - 2829323/15625000.
Can you please explain what I'm missing in working this problem.
eddieThis question is from textbook beginning algebra

Click here to see answer by arallie(162)

Question 198973: translate to an equation then solve. what number is 42% of 72
Click here to see answer by bsmath(18)

Question 199399: i need help expressing 5E-5 in decimal form when given as an answer on a calculator
Click here to see answer by solver91311(5072)

Question 199761: i need help with decimals everything with them so please if u cluld get back to me
Click here to see answer by nerdybill(2446)

Question 199876: When rounding to the nearest 3 places do would you round up the 4th number example the square roof of 162 is 12.7279. Rounded to 3 places would it be 12.728 or 12.727
Thank you.
Click here to see answer by rfer(2688)

Question 199931This question is from textbook
: why 2√2 is in simplest form but √8 is not in simplest form.
This question is from textbook

Click here to see answer by Alan3354(6059)

Question 200061: add and subtract the following fractions.
2/3+5/7
3/4+7/12
4/9-1/8
Click here to see answer by jerrybassmasta(14)

Question 200395This question is from textbook Mathematics For Technical trades
: The speed of light in a vacumn is 186,282.397 miles per second.What is this rounded to the nearset thousand miles per second? And what is this rounded to the nearest ten thousand miles per hour? JANETThis question is from textbook Mathematics For Technical trades

Click here to see answer by checkley77(7035)

Question 202161: My problem involves the base ten numeration system.
I need to write 101(0two) (zero and two written like an exponent)in base ten.
Click here to see answer by vleith(1977)

Question 202217: How do I solve 3%of$36.00?
Click here to see answer by RAY100(1637)

Question 203417: Find the least common multiple of 14, 21, and 35.
A. 70
B. 10,290
C. 42
D. 210
Click here to see answer by jsmallt9(590)

Question 203421: If 1 gallon of water weighs 8.34 pounds, how much does 3.75 gal weigh ?
Click here to see answer by rfer(2688)

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