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April 17, 2014

Search: 5*10^ -4

Number of results: 70,704

Math
Write each number in expanded form using exponents. Pls check 1, 234 (1*10^3)+(3*10^2)+(2ื10^1)+4 210, 290, 450 (2*10^8)+(1*10^7)+(2*10^6)+(9*10^5)+(4*10^4)+5 7,123,456,089 (7*10^9)+(1*10^8)+(2*10^7)+(3*10^6)+(4*10^5)+(5*10^4)+(6*10^3)+(8*10^2)+(9*10^1)
Monday, September 16, 2013 at 8:23pm by Gio

algebra
(3.2 x 10^5) (2 x 10^-3) ------------------------- (2 x 10^-3) I got 1.6 x 10^5 like this, (3.2 x 10^5) (2 x 10^-3) ------------ x ----------- (2 x 10^-5) (2 x 10^-5) (3.2 x 10^5) (2 x 10^-3) ------------ x (2 x 10^-5) (3.2 x 10^5) ------------ > 3.2 10^5 (2 x 10^10...
Wednesday, November 19, 2008 at 9:29pm by Seth

math log PLEAseee helpp pretty please!!!
solve for first x 10^y=(x-2) x= 10^y +2 solve for the second x y-1=log(x+1) 10^(y-1)=x+1 or x= 10^(y-1) +1 the x=x, y=y 10^(y-1)+1=10^y +2 remember a^(b-c)= a^b/a^c so 10^y/10 + 1=10^y +2 10^y (-9/10)=1 or -9*10^y=10 log of each side -9 +y=1 y=10 so, now figure x.. x= 10^(y-1...
Thursday, January 20, 2011 at 1:00pm by bobpursley

Math
what would happen to your fractions if you changed them all to having a common denominator of 10 4/10 --- 6/10 1/10 --- 3/10 8/10 --- 10/10 or 1 7/10 or 1--- 9/10 13/10 or 1--- 5/10 did you notice that the numerator of the OUT is 2 less than the numerator of the IN ?
Monday, May 6, 2013 at 6:50pm by Reiny

Algebra
D = kg/V = 2700kg/m^3. 5.4*10^-3 / V = 2700, V = 5.4*10^-3 / 2.7*10^3 = 2*10^-6. V = 0.05 * 0.02 * T = 2*10^-6, 1*10^-3*T = 2*10^-6, T = 2*10^-6 / 1*10^-3 = 2*10^-3m = 2mm.
Sunday, February 13, 2011 at 5:20pm by Henry

algebra
D = kg/V = 2700kg/m^3. 5.4*10^-3 / V = 2700, V = 5.4*10^-3 / 2.7*10^3 = 2*10^-6. V = 0.05 * 0.02 * T = 2*10^-6, 1*10^-3*T = 2*10^-6, T = 2*10^-6 / 1*10^-3 = 2*10^-3m = 2mm.
Sunday, February 27, 2011 at 8:07pm by eb

PHYSICS ---HELP!
700,000 = 7 * 10^5 meters above so r = 7*10^5 + 6.38*10^6 = 70.8*10^5 = 7.08*10^6 m v^2/r = G m M/r^2 v^2 = G M/r v^2 = 6.67*10-11 * 6*10^24 / 7.08*10^6 v^2 = 5.65 * 10^7 = 56.5*10^6 v = 7.5*10^3 = 7500 m/s
Monday, October 11, 2010 at 6:40pm by Damon

physics
Fe= (-9.0 * 10^9) * (2.0 * 10^-6)(3.0 * 10^-6) / 0.40^2 = -54 * 10^-3 / 1.6 * 10^-1 = -0.3375 N Fe= (-9.0 * 10^9) * (-5.0 * 10^-6)(3.0 * 10^-6) / 0.80^2 = 135 * 10^-3 / 6.4 * 10^-1 = -0.2109 N a = -0.55N Fe= (9.0 * 10^9) * (2.0 * 10^-6)(5.0 * 10^-6) / 1.20^2 = 90 * 10^-3 / 1....
Monday, January 24, 2011 at 12:28am by JoshuaVitug

calculus
well, you know l = w because the base is square. v = w^2 h = 300 mL = .3 *10^-3 m^3 so h = 3 * 10^-4 /w^2 cardboard area bottom and top = 2 w^2 sides = 4 w h so A = 2 w^2 + 4 w h A = 2 w^2 + 4 w (3*10^-4)/w^2 A = 2 w^2 + 12*10^-4 /w dA/dw = 4 w -1.2*10^-3/w^2 = 0 fo min 4 w^3...
Tuesday, March 19, 2013 at 7:46am by Damon

add maths
remember how I did the last one for you? original: y = (x+10)/(x-8) inverse: x = (y+10)/(y-8) xy - 8x = y+10 xy - y = 8x + 10 y(x-1) = (8x+10)/(x-1) f^-1 (x) = (8x+10)/(x-1) so we want: (8x+10)/(x-1) = x x^2 - x = 8x + 10 x^2 - 9x - 10 = 0 (x-10)(x+1) = 0 x = 10 or x = -1 ...
Tuesday, January 21, 2014 at 8:31am by Reiny

algebra
remember we can add or subtract only "like" terms so we have to form common denominators for each type (1/5)x^2 + (1/10)x^2 which is (3/10)x^2 ...... 1/5 + 1/10 =2/10+1/10 then (-1/5)x - (1/2)x = (-2/10)x - (5/10)x = (-7/10)x and finally -3/4 + 1/2 = -3/4 + 2/4 = -1/4 (1/5x^2-...
Sunday, July 17, 2011 at 4:43pm by Reiny

i don't understand this math
1. Which of the following is greater than 4.3 x 10^9 a. 2.1 x 10^9 b. 3.2 x 10^9 c. 5.3 x 10^9 d. 7.4 x 10^8 2. Which of the following is less than 6.5 x 10^-5 a. 1.4 x 10^-3 b. 2.5 x 10^-4 c. 7.8 x 10^-5 d. 4.6 x 10^-6 3. According to the 2010 census, the population of ...
Wednesday, September 12, 2012 at 5:35pm by Nyla

math
1. Which of the following is greater than 4.3 x 10^9 a. 2.1 x 10^9 b. 3.2 x 10^9 c. 5.3 x 10^9 d. 7.4 x 10^8 2. Which of the following is less than 6.5 x 10^-5 a. 1.4 x 10^-3 b. 2.5 x 10^-4 c. 7.8 x 10^-5 d. 4.6 x 10^-6 3. According to the 2010 census, the population of ...
Wednesday, September 12, 2012 at 3:37pm by Nyla

Algebra
1. Which of the following is greater than 4.3 x 10^9 a. 2.1 x 10^9 b. 3.2 x 10^9 c. 5.3 x 10^9 d. 7.4 x 10^8 2. Which of the following is less than 6.5 x 10^-5 a. 1.4 x 10^-3 b. 2.5 x 10^-4 c. 7.8 x 10^-5 d. 4.6 x 10^-6 3. According to the 2010 census, the population of ...
Wednesday, September 12, 2012 at 4:07pm by Chase

math
or, if you know the laws of exponents, 10^m / 10^n = 10^(m-n) if m=n, say 3, 10^3/10^3 = 10^(3-3) = 10^0 but 10^3/10^3 = 1 10^(m-m) = 10^0 = 10^m/10^m = 1
Wednesday, January 9, 2013 at 5:24pm by Steve

math help
1. Which of the following is greater than 4.3 x 10^9 a. 2.1 x 10^9 b. 3.2 x 10^9 c. 5.3 x 10^9 d. 7.4 x 10^8 2. Which of the following is less than 6.5 x 10^-5 a. 1.4 x 10^-3 b. 2.5 x 10^-4 c. 7.8 x 10^-5 d. 4.6 x 10^-6 3. According to the 2010 census, the population of ...
Wednesday, September 12, 2012 at 3:50pm by :)

math help
1. Which of the following is greater than 4.3 x 10^9 a. 2.1 x 10^9 b. 3.2 x 10^9 c. 5.3 x 10^9 d. 7.4 x 10^8 2. Which of the following is less than 6.5 x 10^-5 a. 1.4 x 10^-3 b. 2.5 x 10^-4 c. 7.8 x 10^-5 d. 4.6 x 10^-6 3. According to the 2010 census, the population of ...
Wednesday, September 12, 2012 at 4:25pm by :)

math
I assume 0 through 9 are allowed and repeats are possible. For example 000-0000 is allowed. How many prefixes? 10*10*10 = 1,000 how many digits 10*10*10*10 = 10,000 so 10^3 * 10^4 = 10^7 = 10 million I guess that is why they needed area codes.
Thursday, May 13, 2010 at 8:11pm by Damon

math
list the values in ascending order: x x x x x median: 10 (middle value is 10) x x 10 x x smallest: 10 (first value is 10) 10 x 10 x x mode=10: (no new values possible between smallest and median, which are the same) 10 10 10 x x range: 15 10 10 10 x 25 mean: 14 (means sum = 70...
Wednesday, February 15, 2012 at 8:57pm by Steve

Math - Pre algebra
Help!!! 1. which of the following is greater than 4.3 x 10>9? a 2.1 x 10>9 b 3.2 x 10>9 c 5.3x 10>9 d 7.4 x 10>8 2. which of the following is less than 6.5 x 10>-5? a 1.4 x 10>-3 b 2.5 x 10-4 c 7.8 x 10-5 d 4.6 x 10>-6 according to the 2010 census the ...
Thursday, November 15, 2012 at 7:43pm by E.M

Math!
ok, here are the rest. Looks like some review is in order. when you multiply, you add powers. when you divide, you subtract powers. so (5 x 10^–2) ๗ (2 x 10^3) = 5๗2 x 10^-2 ๗ 10^3 = 2.5 x 10^-5 (2.56 x 10^6) x (3.56 x 10^2) = 2.56x3.56 x 10^6x10^2 = 9.1136x10^8 population ...
Friday, September 27, 2013 at 12:37pm by Steve

Physics
1. μ represents Greek "mu" or 10^-6 or micro so 50 *10^-6 or 5.0*10^-5 meters 2. same deal 1 μ second is 10^-6 second 3. n, nano, means 10^-9 so 10 nm = 10^-9 = 1.0 * 10^-8 m 10^-8 m/10^-3 m/mm = 10^-5 mm 10^-8 m / 10^-6 m/μm = 10^-2 μm
Wednesday, January 28, 2009 at 9:03am by Damon

Statistics
In order to get a mean of 4/6, you would need to pick four 1's and two 0's. The probability of picking a 1 (with replacement) is 6/10 each time and probability of picking a 0 (with replacement) is 4/10. So, (6/10)*(6/10)*(6/10)*(6/10)*(4/10)*(4/10) However, you can pick the ...
Tuesday, December 14, 2010 at 3:28am by TutorCat

7th grade math - can't figure this out!
Ummmh, doesn't 10^5 mean 10 x 10 x 10 x 10 x 10 ?? So if we multiply by another 10 , how many 10's will we have now ?
Wednesday, October 3, 2012 at 8:11pm by Reiny

math
For n=1, 3^(n-1)/10 = 1/10 For n=2, 3^1/10 = 3/10 For n=3, 3^2/10 = 9/10 For n=4, 3^3/10 = 27/10 The ratio of successive terms is 3. I don't know why you wrote "bracket" at the end of your question.
Thursday, November 5, 2009 at 11:10pm by drwls

Math
pretty slim data how about 2 10 10 10 10 10 ... or 2 10 10 2 or 2 10 10 300
Tuesday, January 1, 2013 at 5:24pm by Steve

MATH
Do a little investigation and you'll see the pattern 10^0 = 1 10^-1 = 1/10 = 0.1 10^-2 = 1/100 = 0.01 ... a billion is a thousand million = 10^3 * 10^6 = 10^9 I think you meant 10^5 -- that would be a 1 with 5 zeros = 10000
Monday, October 17, 2011 at 8:54pm by Steve

math
6 1/2 - 4 7/10 When we subtract fractions, we must use a common denominator. 6 1/2 = 6 5/10 6 5/10 - 4 7/10 Now we need to borrow (or regroup). 6 5/10 = 5 15/10 5 15/10 - 4 7/10 = 1 8/10 = 1 4/5
Monday, May 7, 2012 at 12:50pm by Ms. Sue

Math
1. (6.0 x 10^5) x (3.0 x 10^4) = a. 18 x 10^20 b. 18 x 10^9 c. 1.8 x 10^20 d. 1.8 x 10^9 2. (5 x 10^-2) ๗ (2 x 10^3) = a. 2.5 x 10^-5 b. 2.5 x 10^-1 c. 25 x 10^1 d. 25 x 10^2 3. (2.56 x 10^6) x (3.56 x 10^2) = a. 9.1136 x 10^12 b. 91.136 x 10^8 c. 9.1136 x 10^8 d. 91.136 x 10^...
Thursday, September 13, 2012 at 3:46pm by Chase

chem
Or another way is 3 x 10^3 + 4.0 x 10^4 = 3 x 10^3 + 40 x 10^3 = 43 x 10^3 = 4.3 x 10^4 Or a third way is 0.3 x 10^4 + 4.0 x 10^4 = 4.3 x 10^4 For purposes of using some method to perform significant figures checks, I think the latter is the best.
Monday, February 11, 2008 at 9:39pm by DrBob222

physics
m = 9.11 * 10^-31 vi = 3 * 10^5 vf = 8 * 10^5 vf = vi + a t d = Vi t + .5 a t^2 10^-1 = 3*10^5 t + .5 a t^2 or 1 = 3*10^6 t + 5 a t^2 but t = (8-3)10^5 /a so 1 = 3*10^6 (5*10^5/a ) +5 (25*10^10/a) a = 15*10^11 + 12.5*10^11 a = 27.5 * 10^11 kg F = ma = 9*10^-31*27.5*10^11 = 247...
Monday, October 17, 2011 at 10:47am by Damon

physics
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is 0.5*10^-3 m^3, V1 = 1.0*10^-3 m^3 and V2 = 4.0*10^-3 m^3. The vertical axis is P(N/m^2); A is (1.0*10^-3,2.6*10^6), B is (4.0*10^-3,2.0*10^6), C is...
Thursday, July 25, 2013 at 9:43pm by Justin

physics
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is 0.5*10^-3 m^3, V1 = 1.0*10^-3 m^3 and V2 = 4.0*10^-3 m^3. The vertical axis is P(N/m^2); A is (1.0*10^-3,2.6*10^6), B is (4.0*10^-3,2.0*10^6), C is...
Friday, July 26, 2013 at 2:05pm by Justin

physics
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is 0.5*10^-3 m^3, V1 = 1.0*10^-3 m^3 and V2 = 4.0*10^-3 m^3. The vertical axis is P(N/m^2); A is (1.0*10^-3,2.6*10^6), B is (4.0*10^-3,2.0*10^6), C is...
Sunday, July 28, 2013 at 1:31am by Justin

physics
Calculate the net work output of a heat engine following path ABCDA in Figure 14.30, where horizontal axis is V and each unit is 0.5*10^-3 m^3, V1 = 1.0*10^-3 m^3 and V2 = 4.0*10^-3 m^3. The vertical axis is P(N/m^2); A is (1.0*10^-3,2.6*10^6), B is (4.0*10^-3,2.0*10^6), C is...
Sunday, July 28, 2013 at 5:34pm by Justin

Chemistry
No, 10/0 is an indeterminate value. You can prove that to yourself. 10/0 = 0 but 0*0 = 0 which isn't 10. 10/0 = 1 but 1*0 = 0 which isn't 10. 10/0 = 5 but 5*0 = 0 which isn't 10. 10/0 = 1,000 but 1000*0 = 0 which isn't 10. etc. The bottom line to the answer of 10/0 = any ...
Wednesday, February 9, 2011 at 12:04am by DrBob222

math
To solve your problem you need to multiply. 10/7 is not 1 3/10. 10/7 = 1 3/7 9/10 of 10/7 = 9/10 * 10/7 9/10 * 10/7 = 90/70 = 1 20/70 = 1 2/7
Tuesday, January 22, 2008 at 7:05pm by Ms. Sue

math
There could be two fact families. 10 = 7 + ? 10 = ? + 7 10 - ? = 7 10 - 7 = ? 10 = 8 + ? 10 = ? + 8 10 - ? = 8 10 - 8 = ? I hope this helps.
Tuesday, January 19, 2010 at 9:25pm by PsyDAG

precalc
Use Sigma Notation to write the sum [10-(1/10)^2]+[10-(2/10)^2]+[10-(3/10)^2]+[10-(4/10)^2]
Sunday, December 4, 2011 at 7:25pm by Alex

Algebra
(5.5)(8) x 10^-10 = 44 x 10^-10 = 4.4 x 10^-9 how did you get +10 ???? scientific notation consists of a number with a single digit, followed by a decimal x 10^(some exponent)
Wednesday, February 6, 2013 at 7:32pm by Reiny

Math
11 5/10 9 1/10 + 7 2/5 you have to find the common denominators of 1/10 and 2/5 which is 10 so you leave 1/10 the same and multiply 2/5 with 2 each to get 4/10 then you add 1/10 + 4/10 which is equal to 5/10. now that you got that just add the 9+7 you get 11 so your answer is ...
Saturday, October 8, 2011 at 12:07pm by samantha

Chemistry
I have the following equation: 0.5 ug/L x 1g/10^-6ug x 1 mol/27 g I can't divide by 10^-6...how do I rearrange the equation? What is the problem with dividing by 10^-6? Anyway, you can multiply by 10^6 instead. I end up with an error message when I divide 1/10^-6... so, you ...
Tuesday, January 23, 2007 at 4:32pm by Steve

precalculus
try x = 2 16+8+16 +20 - 60 = 0 sure enough x = 2 works so divide by (x-2) x^3 + 3 x^2 + 10 x + 30 write as x^3+10 x +3(x^2 +10) x(x^2+10) + 3(x^2+10) (x+3)(x^2+10) so x = -3 is a root left with x^2 = -10 x = +/- i sqrt(10) so 2, -3, i sqrt 10 , -i sqrt 10
Saturday, November 12, 2011 at 9:32pm by Damon

Physics
Your method looks OK to me. Let the charges be q and 2q. 1.2*10^-9 N = k *2 q^2/ r^2 k = 9.0*10^9 N m^2/C^2 r = 4.0*10^-2 m q^2 = (1/2)(0.04)^2 * 1.2*10^-9/9.0*10^9 = 1.06*10^-22 C^2 q = 1.03*10^-11 C The other particle has twice that charge.
Tuesday, April 14, 2009 at 11:07pm by drwls

math/chem
1) 35.72 x 0.00590 2) 0.4832/5.12 3) (6.09 x 10^-1)(9.08 x 10^5) 4) (7.79 x 10^4)(4.56 x 10^3)/ (2.93 x10^3)(3.2 x 10^2) 5) 2.3 x 10^2 + 7.16 x 10^5
Saturday, September 12, 2009 at 5:29pm by jay

algebra 1
x + 7/10 = -1/5 We need to get the known quantities on one side and the unknowns on the other side. First subtract 7/10 from both sides of the equation. x + 7/10 - 7/10 = -1/5 - 7/10 x = -2/10 - 7/10 x = -9/10
Tuesday, December 7, 2010 at 4:56pm by Ms. Sue

math
Solve the following and express the answer in scientific notation: 10^3 x 10^4 x 10^-2 A. 10^5 B. 10^6 C. 10^7 d. 10^8 I say A
Wednesday, November 7, 2012 at 4:27pm by shana

Chemistry
A 0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 ด 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 ด 10^-2 b. 5.0 ด 10^-3 c. 2.5 ด 10^-4 d. 2.5 ด 10^-5 e. 2.5 ด 10^-6 2. (Points: 1) What is the carbonate-ion, CO3^-2, ...
Thursday, May 13, 2010 at 7:34am by write2khin

Chemistry
0.10 M solution of a weak monoprotic acid has a hydronium-ion concentration of 5.0 * 10^-4 M. What is the equilibrium constant, Ka, for this acid? a. 5.0 *10^-2 b. 5.0 * 10^-3 c. 2.5 * 10^-4 d. 2.5 * 10^-5 e. 2.5 * 10^-6 2. (Points: 1) What is the carbonate-ion, CO3^-2, ...
Thursday, May 13, 2010 at 5:26pm by wite2khin

chemistry
Use algebra to solve the quadratic equation 1.7*10^-5 *(c - 0.02) = 4*10^-4 c^2 which can be rewritten 4*10^-4 c^2- 1.7*10^-5 c +3.4*10^-7 = 0 c^2 -4.25*10-2 c + 8.5*10^-4 = 0 It appears there is no real-number solution to this equation, because B^2 - 4AC is negative. (A, B ...
Saturday, February 14, 2009 at 3:35pm by drwls

Math help please
7. In the expression –7x – 5x2 + 5, what is the coefficient of x? 7 5 –5 –7 8. Write the expression using a single exponent. 2^2 • 2^8 4^10 2^10 4^16 2^16 9. Write the expression using scientific notation. (2.5 • 104)(4 • 103) 10 • 10^7 10 • 10^8 1 • 10^8 10• 10^12 My answers...
Monday, May 6, 2013 at 7:46pm by Delilah

6grade math
1mm (1 milimeter)=(1/1000m)=10^-3m 1์=1mikron=1/1000mm=10^(-3)mm=10^(-6)m 1m์=1milimikron=(1/1000)์=10^(-3)์= 10^(-9)m 2.5m=2.5/10^(-9)=2.5*10^9= 2500000000 m์
Tuesday, March 29, 2011 at 8:35pm by Anonymous

For Mattie - Math
2 X 10 square + 3 X 10 to the first + 5 X 10 to the zero +7 X 10 to the negative one in "math" = 2(10^2) + 3(10) + 5(10^0) + 7(10^-1) = 200 + 30 + 5 + 7/10 =235.7 looks like we have the number 235.7 decomposed into its different position values.
Friday, December 7, 2012 at 7:18am by Reiny

chemistry
A particular solution has a [H3O+] 2.44 x 10^-4. Therefore, the [OH-]= 4.10 x 10^3 4.10 x 10^-11 2.44 x 10^-4 1.71 x 10^-8 9.09 x 10^-16
Monday, December 5, 2011 at 2:45pm by Anonymous

4th grade math
2 1/5 = 2 2/10 2 3/5 = 2 6/10 2 2/10 + 3 2/10 + 2 6/10 = 7 10/10 = 8 = 80/10
Tuesday, March 18, 2014 at 5:22pm by Ms. Sue

precal
10^x/10 = (0.01)^1/3 I see base 10 all over the place 10^(x-1) = ((1/10)^2)^(1/3) 10^x-1 = 10^(-2/3) so x-1 = -2/3 x = 1/3
Saturday, August 28, 2010 at 8:02pm by Reiny

5 grade math
3/10 + 5/10 = 8/10 can you do the rest? 1/2 of 10 is 5, so 5/10..... it comes to 8/10 then 8 4 - = - 10 5
Friday, February 3, 2012 at 6:53pm by 12-year-old-poet

Math
1.23*10^-10/1.4*10^-8 = 0.879*10^-2 = 8.79*10^-3. When dividing, subtract the exponents: -10 - (-8) = -10 + 8 = -2.
Thursday, October 17, 2013 at 7:07pm by Henry

Physics
1 m^3 = (10^2)^3 = 10^6 cm^3 so 100cm^3 = 10^-4 m^3 so deltaV/Vo = 10^-4/1 = 10^-4 so 10^-4 = Beta (delta T) delta T =10^-4/(7.2*10^-5) = 10/7.2
Sunday, December 12, 2010 at 7:19pm by Damon

Math
Let's use the "brute force" method. Start at the top with the most valuable combination and start adding. 25 + 25 + 25 = 75 25 + 25 + 10 = 65 25 + 25 + 5 = 55 25 + 25 + 1 = 51 25 + 10 + 10 = 45 25 + 10 + 5 = 40 25 + 10 + 1 = 36 10 + 10 + 10 = 30 10 + 10 + 5 = 25 10 + 10 + 1 = ...
Sunday, January 9, 2011 at 11:07am by drwls

math214
Following are the men’s gold-medal times for the 100 m run in the Olympic games from 1896 to 2003, rounded tothe nearest tenth. Construct an ordered stem and leaf plot for the data. Year Time (sec), (rounded) 1896 12.0 1900 11.0 1904 11.0 1908 10.8 1912 10.8 1920 10.8 1924 10....
Sunday, September 25, 2011 at 11:16pm by darcel78

chem
where did you get m? [(NH3)(H3O^+)/(NH4^+)] = Kw/kb (y*y/0.123-y)= 1 x 10^-14/1.8 x 10^-5 I don't know your book value for Kb for NH3 but I'm using 1.8 x 10^-5. Then operate on the right side only to get 1 x 10^-14/1.8 x 10^-5 = 5.56 x 10^-10, then [y^2/(0.123-y)] = 5.56 x 10...
Monday, February 16, 2009 at 8:42pm by DrBob222

Math
Using 10^n = x (mod 9). Given that d=2935107 =2*10^6 + 9*10^5 + 3*10^4 + 5*10^3 + 1*10^2 + 0*10^1 + 7^10^0 Then d = kx (mod 9). What is the smallest positive value of k?
Friday, October 26, 2012 at 11:54am by Anonymous

Math
Find an equation of the line that bisects the obtuse angles formed by the lines with equations 3x-y=1 and x+y=-2. a. (3√2 +√10)x-(√10 + √2)y-2√10+√2=0 b. (3√2 - √10)x+(√10 - √2)y+2√10+√2=0 c. (3√2...
Tuesday, June 2, 2009 at 3:48pm by Sophie

Math
7^-2 = 1/7^2 = 1/49 6^-2 = 1/6^2 = 1/36 4^0 = 1 (as does any number n^0) 6^-2 • 4^0 = 1/36 * 1 = 1/36 5^2 • 5^-1 • 5^3 = 5^(2-1+3) = 5^4 (4ื10^3)ื(6ื10^6) = 4ื6ื10^(3+6) = 24ื10^9 = 2.4ื10^10 1/10 • 4/10 = 1•4/(10•10) = 4/100 = 1/25
Tuesday, September 18, 2012 at 3:15pm by Steve

math
5.432 x 10^2 6.700008 x 10^3 The number you have in front must be between 1 and below 10. You multiply that by ten to a certain power. Ex: 10^0 = 1, 10^1 = 10. 5.0 x 10^1 = 50. Remember to retain all significant figures.
Tuesday, September 9, 2008 at 4:27pm by Angela

algerbra
We have this: 10^7 * 10^3 ------------- = 10^4 * 10^-9 We can multiply the numerators and denominators as step one, if you'd like. 10^7 * 10^3 = 10^10 = our numerator. 10^4 * 10^-9 = 10^-5 = our denominator. We now have this fraction: 10^10/10^-5 Since we have the SAME BASE of...
Wednesday, February 20, 2008 at 1:27pm by Guido

Calculus
c = 9*10^-6 x^3/3 - 9*10^-3 x^2/2 + 8 x + constant which is 120 so c = 3 *10^-6 x^3 -4.5*10^-3 x^2 + 8 x + 120 if x = 5*10^2 go ahead, plug that in then for break even 25 x = = 3 *10^-6 x^3 -4.5*10^-3 x^2 + 8 x + 120 or 0 = 3*10^-6 x^3 -4.5*10^-3 x - 17 x +120
Thursday, April 25, 2013 at 12:30pm by Damon

Calculus
c = 9*10^-6 x^3/3 - 9*10^-3 x^2/2 + 8 x + constant which is 120 so c = 3 *10^-6 x^3 -4.5*10^-3 x^2 + 8 x + 120 if x = 5*10^2 go ahead, plug that in then for break even 25 x = = 3 *10^-6 x^3 -4.5*10^-3 x^2 + 8 x + 120 or 0 = 3*10^-6 x^3 -4.5*10^-3 x - 17 x +120
Thursday, April 25, 2013 at 12:30pm by Damon

math
.02 * 200 * 10^3 = 4 * 10^3 .01 * 200 * 10^3 = 2 * 10^3 .005*(540-400)*10^3 = 0.7*10^3 so (4+2+.7)*10^3 = 6.7*10^3 = 6700
Sunday, February 2, 2014 at 12:25am by Damon

plz help ms sue
1. What is the product of (5.1 x 10^3) x (3.2 x 10^3)? a. 16.32 x 10^6 b. 1.632 x 10^7 c. 16.32 x 10^9 d. 1.632 x 101^0 2. What is the product of (7.28 x 10^-2) x (9.1 x 10^-2)? a. 6.6248 x 10^-3 b. 66.248 x 10^-4 c. 6.6248 x 10^4 d. 66.248 x 10^-3 3. What is the quotient of (...
Thursday, September 13, 2012 at 4:38pm by drake

Math
There are 10 non-permanent and 5 permanent members for a total of 15. This means that there must be at least n votes from the 10 non-permanent members, where n≥6. So the number of ways the votes can go are: C(10,6)+C(10,7)+C(10,8)+C(10,9)+C(10,10) =386 where C(10,6)=10!/(6...
Friday, September 23, 2011 at 12:28pm by MathMate

Calculus
Did you make a sketch of y = (2x-10)^(1/2) ? Let Q be any point on the curve then Q can be labelled (x, (2x-10^1/2 ) Join OQ slope of oQ = (2x-10)^1/2 / x let the angle made by OQ with the x-axis be ุ then tanุ = y/x = (2x-10)^1/2 / x sec^2 ุ dุ/dx = (x(1/2)(2x-10)^(-1/2)(2...
Tuesday, November 15, 2011 at 5:06pm by Reiny

Math
(0.140-2y)^2 * (3.2*10^-10) = 4 y^5 (0.0196 -0.280y + 4y^2)*(3.2*10^-10) = 4 y^5 6.282*10^-12 -8.96*10^-11 y +1.28*10^-9 y^2 = 4 y^5 This is a messy fifth order polynomial that is best solved by iteration. As a first approximation, I would assume 4 y^5 = 6.282*10^-12, since ...
Friday, February 6, 2009 at 11:45pm by drwls

Help!! Physics
c = speed of light = 3 * 10^8 m/s 199 = c T T =199/3*10^8 f = 1/T = 300* 10^6/199 = 1.51 * 10^6 Hz omega = 2 pi f = 9.47 * 10^6 omega^2 = 1/(LC) = 89.7*10^12 so C (785 * 10^-6) = (1/89.7) 10^-12 C = (1/70414) 10^-6 = 1.42 * 10^-5*10^-6 = 1.42 * 10-11
Saturday, March 29, 2014 at 10:49am by Damon

Math,algebra
Can someone explain to me how to solve the following. Directions:Multiply and write the answer in simplest form. 4/10 divided by 10/4? 4/10 / 10/4 change to mulitpcation by flipping the last fraction: 4/10 * 4/10 = 8/20 8/20 = 4/10 = 2/5 luke, I'm sorry i had a typo it was 4/...
Saturday, December 16, 2006 at 5:35pm by jasmine20

physics 1
F = G Mm/R^2 = m v^2/R v^2 R = G M = 6.67*10^-11 * 5.98*10^24 v^2 R = 39.9 * 10^13 v T = circumference = 2 pi R so R = v T/(2 pi) R = v [1.77*10^4/(2 pi)] R = 2.82*10^3 v so v^3 (2.82*10^3) = 39.9 * 10^13 v^3 = 14.1 * 10^10 = 141 * 10^9 v = 5.2 * 10^3 v = 5,200 m/s
Wednesday, March 5, 2014 at 8:35am by Damon

phyiscs
an means n a's multiplied together. For example: 56 = 5*5*5*5*5*5=15625 so 1.5*1013 means 1.5*10*10*10*10*10*10*10*10*10*10*10*10*10 =1.5*10000000000000 =15000000000000 =15,000,000,000,000
Friday, October 29, 2010 at 8:35am by MathMate

probability
Binomial distribution with p = .5 p(10 right) = c(10,10) .5^10 (.5)^0 =.5^10 = .000976 p( 9 right) = c(10,9) .5^9 (.5)^1 = .00976 p(8 right) = c(10,8) (.5)^8 (.5)^2 = 45*.5^10 = .04394 sum = .0547
Wednesday, March 6, 2013 at 2:34am by Damon

Math
4.3*10^3 * 2*10^-8= 4.3*2*10^3*10^-8= 8.6*10^[3+(-8)]= 8.6*10^(3-8)= 8.6*10^-5= 8.6/10^5= 8.6/100,000= 0.000086
Monday, April 4, 2011 at 9:26pm by Bosnian

Algebra
What is the order of 5 X 10^-8, 7 X 10^-9, 3 X 10^-9, 8 X 10^4 from least to greatest? Is it 3 X 10^-9, 7 X 10^-9, 5 X 10^-8, 8 X 10^4?
Thursday, February 6, 2014 at 12:56pm by Anonymous

electric field intensity
Mass of sphere = 2*10^-3 kg Weight of sohere = 9.8*2 *10^-3 = 1.96 *10^-2 N Force to hold at 10deg = 1.96*10^-2 * tan 10 = 3.45 *10^-3 N = E * q so E = 3.45 *10^-3 / 5 *10^-8
Saturday, January 17, 2009 at 8:26pm by Damon

Finite Math
so you want 8 heads, 9 heads or 10 heads prob = C(10,8) (1/2)^10 + C(10,9) (1/2)^10 + C(10,10) (1/2)^10 = (1/2)^10 (45 + 9 + 1) = 55 (1/2)^10 = 55/1024 or appr .0537
Monday, March 19, 2012 at 10:56am by Reiny

chemistry
Thomas, with the equation I gave you before you really don't need an ICE chart. I think I had Kb = (Kw/Ka) = (HC2H3O2)(OH^-)/(0.05) 1 x 10^014/1.8 x 10^-5) = 5.55 x 10^-10 so 5.55 x 10^-10 = (X^2)/0.05 Then X^2 = 5.55 x 10^-10 x 0.05 X = sqrt(5.55 x 10^-10 x 0.05) This is the ...
Monday, July 12, 2010 at 7:38pm by DrBob222

Physical Education
rate (m^3/s) = speed (m/s) * area (m^2) = 0.35 * 2.0*10^-4 = 0.70 * 10^-4 = 7.0 * 10^-5 = .0000070 m^3/s 7.0*10^-5 = v * .28 v = 25 * 10^-5 = 2.5 * 10^-4 m/s
Monday, May 13, 2013 at 9:56am by Steve

fractions
The perimeter of a rectangle uses this forumla: P = 2L + 2W P = 2(7/10) + 2(1/10) P = 14/10 + 2/10 P = 16/10 = 1 6/10 = 1 3/5 inches
Friday, July 24, 2009 at 1:13pm by Ms. Sue

Intermediate Algebra
count the leading zeroes, and add 1: 2.4*10^-4 look: 2.4 = 2.4*10^0 .24 = 2.4*10^-1 .024 = 2.4*10^-2 .0024 = 2.4*10^-3 .00024 = 2.4*10^-4
Friday, March 30, 2012 at 12:06pm by Steve

math
c = about 3*10^8 meters/second 10 km = 10^4 meters delay time = distance/speed = 10^4/(3*10^8) = (1/3)*10^-4 = 0.000033 seconds = 0.333*10^-4 = 3.33 *10^-5 seconds
Friday, May 28, 2010 at 4:18pm by Damon

math
6 3/10 - 2 1/2 The common denominator is 10. 6 3/10 - 2 5/10 5 13/10 - 2 5/10 = 3 8/10 = 3 4/5
Wednesday, December 2, 2009 at 7:29pm by Ms. Sue

Physics
Area = 1.131*10^-4 m^2 d = 1.8*10^-4 m epsilon = 8.85*10^-12 C = 2.06*10^-11 F q = CV = 1.2*10^-10 coulombs I agree with your answer
Wednesday, February 6, 2008 at 11:30am by drwls

Algebra
Which expression isn't equal to 125? A. 5((5^3)/(2/5))^2 B. ((5^3) / (5^4))^-3 C. (5^-2)/(5^-5) D. 5((5^5)/(5^3)) A What is the correct simplification of (5.4 X 10^12)/(1.2 X 10^3) written in scientific notation? A. 4.5 X 10^7 B. 4.5 X 10^9 C. 45 X 10^6 D. 6.48 X 10^7 B
Monday, January 27, 2014 at 10:06pm by Anonymous

Math 30
You are one term ahead of yourself C(10,0) = 1 C(10,1) = 10 C(10,2) = 45 so you want C(10,3) and C(10,4) which are 120 and 210
Monday, March 22, 2010 at 7:07pm by Reiny

math
Solve the following and express the answer in scientific notation: (5.3 x 10^4) + (2.2 x 10^3) A. 5.5 x 10^4 B. 7.5 x 10^3 C. 7.5 x 10^7 D. 11.7 x 10^7 I say A
Wednesday, November 7, 2012 at 4:07pm by shana

arithmetic
each groups consist of 10 block so 10+10+10+10+10=50 10+10+10+10+10=50 =100 and anyone groups equal to 10 so therefore 100 = 10 small block =1
Wednesday, August 22, 2012 at 11:05pm by jean

math
Solve the following and express the answer in scientific notation: (5.4 x 10^4) x (4.5 x 10^8) A. 2.4 x 10^10 B. 24 x 10^11 C. 24 x 10^12 D. 2.4 x 10^3 I say D
Wednesday, November 7, 2012 at 6:16pm by Drew

math
1. What is the product of (5.1 x 10^3) x (3.2 x 10^3)? a. 16.32 x 10^6 b. 1.632 x 10^7 c. 16.32 x 10^9 d. 1.632 x 101^0 2. What is the product of (7.28 x 10^-2) x (9.1 x 10^-2)? a. 6.6248 x 10^-3 b. 66.248 x 10^-4 c. 6.6248 x 10^4 d. 66.248 x 10^-3 3. What is the quotient of (...
Thursday, September 13, 2012 at 4:25pm by drake

Math
A --- 40.1 x 10^-6 = 4.01 x 10^-5 B ---------------- 4.1 x 10^-7 C ------ .411 x 10^-6 = 4.11 x 10^-7 D .04001 x 10^-5 = 4.001 x 10^-7 The largest number is the one with the largest exponent since -5 > either -6 or -7 your choice of A is correct
Monday, March 28, 2011 at 5:14pm by Reiny

MATH; PLEASE HELP
Power Standard Form 10^1 10 10^2 100 10^3 1000 10^4 10000 10^5 100000 Write a rule for the number pattern.
Wednesday, February 27, 2013 at 12:47pm by Deanne

maths
Clearly 10^n = n^10 when n=10 Since exponentials grow faster than polynomials for large enough n, It looks like 10^n <= n^10 for n=2..10, or 9 values
Thursday, May 16, 2013 at 9:22am by Steve

math
Solve the following and express the answer in scientific notation: 10^3 x 10^4. A. 10-^1 B. 10^1 c. 10^6 D. 10^7 I say D
Wednesday, November 7, 2012 at 6:08pm by shana

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