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Question 170841: One common use of positive and negative exponents is in writing numbers as scientific notation. for example 0.000052 can be writtrn as 5.2*10^-5. A) Use scientific notation and the law of exponents to evaluate (0.000054)(0.00000033)(0.013). Leave your answer in scientific notation. B) If a space probe travels at 12 kilometers per second for 10 years, how far will it travel? Write your answer in scientific notation. ( Assume 1 year =365)
Scientific Notation: A number is expressed in scientific notation when it is in the form a*10^n, where a is greater than or equal to 1 but less than 10 and n is an integer.
I got the first part, I think.
5.4*10^-5
3.3*10^-7
1.3*10^-2= 23.17*10^-14
The second part I have no clue.
Click here to see answer by jim_thompson5910(35256)

Question 171854: Need help in subracting and adding decimals
1) 3.18 - 5.72 - 6.4 = ?
2) -8.9 + 7.36 - 14.2 = ?
3) What is 4.793 less than -6.82 ?
4) -125.41 + 361.55 =?
I have answers but I just want to check with your answers.
Thank you

Click here to see answer by Alan3354(69443)

Question 171859: Thank you for getting back to me so soon.
I have two more that I would like to check my answers.
81.72 + 36.067 + -48.93 = my answer is 68.857 is this correct?
-3.69 - (-1.527) = -2.163,is this correct as well?
Click here to see answer by jim_thompson5910(35256)

Question 171889: Multiplying decimals
1) (0.72)(3.7)= 2.6640
2) (1.9)(-3.7) = -7.03
3) -10(0.59) = -5.9
4) Find 0.82 times 10 square = 82.0
5) How much greater is 5 than 1.63?=3.37
Please check my answers.
thank you.
Click here to see answer by jim_thompson5910(35256)

Question 174417: ben is making for next arts and crafts sale.Each toy costs ben $1.80 to make.If he sells the toys for $3.00 each,how many he have to sell to make a profit of exactly $36.00?
Click here to see answer by jim_thompson5910(35256)

Question 174895: Write 2.44 as a fraction or mixed number in lowest terms.
Click here to see answer by Mathtut(3670)

Question 175782: Write the following in standard (decimal) notation: thanks!

a) 2.45 X 103
b) 3.342 X 10-4
c) 5.3 X 106
Click here to see answer by josmiceli(19441)

Question 176711: I have two problems about scientific notation; they are from a textbook. A) other than the sun closest to Earth is Alpha Centauri. Its distance from Earth is about 2.4 x 10^13 mi. One light year = the distance the light travels in one year = 5.88 x 10^12 mi. How many light years is it from Earth to Alpha Centauri? B)write 200 billionths in scientific notation. I have no clue. thanks.
Click here to see answer by stanbon(75887)

Question 177253: which is bigger .080 or .082 ?
Click here to see answer by jim_thompson5910(35256)

Question 177687: Convert to decimal notation.
8.74*10^7
Please help me
Thank you
Click here to see answer by user_dude2008(1862)

Question 178676: round off 6963 to 2 significant figures
Click here to see answer by Alan3354(69443)

Question 180142: I have been asked to answer this question in algebra this week and I am at a total loss as to what the advantage is. Any help would be appreciated
Describe one advantage of expressing a number in scientific notation over decimal notation
Click here to see answer by Mathtut(3670)

Question 180303: I want to know how to get the square root of 15 into decimal form. I need to know how you came about the answer. I saw online an answer to the square root of 7 in decimal form. It says it is 2.645. But I don't know how they got that. I really appreciate the help if any. Thank you tutors ^_^
Click here to see answer by Mathtut(3670)

Question 165815: Use digits and a comparison symbol to how that the decimal number five equals the fraction on half.
Click here to see answer by lissie26(1)

Question 180962: 3.98*10^-8 M
Click here to see answer by edjones(8007)

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 Alan3354(69443)

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)
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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%
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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 108627: 8.5 times 10times the power of 3=
8.5x10^3
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(75887)

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(8007)

Question 184502: 2√27x^5y
Click here to see answer by jim_thompson5910(35256)

Question 185472: The decimal number 75 is equivalent to what base four number?
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Question 186939: What is the value of 9 in 365,791?
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(35256)

Question 100484: which is the best price per unit?
0.065, 0.0546, 0.0688, 0.0679
Click here to see answer by Alan3354(69443)

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(2983)

Question 187677: I need help.
Calculate.
(5 * 10^4)^2
Write answer in scientific notation.
Click here to see answer by stanbon(75887)

Question 187677: I need help.
Calculate.
(5 * 10^4)^2
Write answer in scientific notation.
Click here to see answer by jim_thompson5910(35256)

Question 187765: Solve:
2.2x - 0.1x + 0.02x= -2 - 0.12
what is x?
Click here to see answer by checkley77(12844)

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(35256)

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(69443)

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)

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