# I solved (3x10^6)(2x10^5). My teacher said we were supposed to add the exponents. Do we still foil when we use exponents? Thanks, Kerry.

18,276 results
1. ## Math

Radio signals travel at a rate of 3x10^8 meters per second.how many seconds would it take for a radio signal to travel from a satellite to the surface of earth if the satellite is orbiting at a height of 3.6x10^7 meters? A. 8.3 seconds B. 1.2x10^-1 seconds

2. ## Math

Which of the following statements is not true regarding operations with exponents? A.)To divide powers with the same base, subtract the exponents. B.)To subtract powers with the same base, divide the exponents. C.)To multiply powers with the same base, add

3. ## Chemistry

A solution of aniline(C6H5NH2, Kb=4.2x10^-10) has a pH of 8.69 at 25 Celsius. What was the initial concentration of aniline? I have so far don't know if it's right: *. [H3O]=10^-8.69=2x10^-9 * 4.2x10^-10=(2x10^-9)^2 / x X=1.2x10^-8 (correct???)

4. ## algebra

1. Which of the following is equivalent to x5y2/xy2 when x ≠ 0 and y ≠ 0? A. x6y5 B. x5y C. x4y D. x4 ********* 2. Which expression is NOT 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) 3. A fraction reduces to

5. ## Chemistry

If the solubility of Ag2CO3 is 1.3x10^-4 mol/L, what is its Ksp? (the answer is said to be 8.8x10^-12) Ag2CO3(s) -----> 2 Ag+ (ag) + CO3 2- Ksp= [Ag+]^2 [CO3^2-] = [1.3x10^-4]^2[1.3x10^-4] =2.197x10^-12 thats what I did, but I found that if you first

6. ## Math

Please help asap!! what is the order of the numbers from least to greatest A=6.2x10-5 b =12.3x10-7 c=5.2x10^3 d=3.7x10-5 the answer choices is a d

7. ## Chemistry

At 25°C, the methylaminium ion, CH3NH3+, has a Ka of 2.0 x 10–11. Which of the following is the pH of a 0.15 mol L–1 solution of methylamine? i tried out two methods because im not getting the right answer: H20 + Ch3Nh2 -> CH3NH3+ + OH- I made a table

8. ## algebra

Check my answer? What is the order of the numbers from least to greatest? A= 6.2x10^5, B= 1.1x10^-3, C= 4.3x10^-3, D= 5.2x10^-5 I think it's D,B,C,A (5.2x10^-5, 1.1x10^-3, 4.3x10^-3, 6.2x10^5)

9. ## chemistry

I am supposed to add NH4 and C2H3O2 together and write the new ion. Would it be NH7C2O2? do I add the hydrogens together and were would it go in the order then?

10. ## maths

Q:if x= 2x10^5 and y=3x10^-3 correct to one significant figure,find the greatest and least possible value of: i)x/y

11. ## Algebra

What do you do when you divide two numbers written in exponential notation? A. Add the exponents of the 10 together B. Multiply the exponents of the 10 together C. Subtract one exponent of the 10 from the other D. Divide one exponent of the 10 by the other

12. ## Math

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

13. ## chemistry

How can the overall order of a reaction be determined? A. Add the exponents in an equilibrium constant expression. B. Add the coefficients in the balanced equation. C. Count the number of different reactants. D. Examine experimental data for the reaction

14. ## multiplying and diving scientific notation

1)(2.3x10^2)(4.5x10^-7)= 1.035x10^-6 2) 4.8x10^2/1.2x10^5= 4.8x10^-3

15. ## algebra

Simplify. Do not use negative exponents in the answer. 12x-2y4 -3xy-7 There should be a line between like a fraction but it did not copy or paste. This is the answer I got 12 x^-2 y^4 = 12y^4/x^2 -3xy^-7 = -3x/y^7 it was wrong. 12x^-2y^4 / -3xy^-7 = 12/-3

16. ## "Given Molality, calculate..."

"Given: An aqueous solution of C6H12O6 with a density of 1.18 g/ml" I) Calculate Molarity 1) It firsts asks me to, "State the moles of solute" 2) Calculate the mass of the solute in grams - I think I can do this if I know how to get #1 3) Later it also

17. ## Algebra

3x^8 – 7x^8 A.-4x^16 B.–21x^8 C.–4x^8 D.10x^8 I think this is C...just making sure you don't add the exponents...?

18. ## Math

a tree is 3,212 years old. How can you express this age in scientific notation with the lowest level of precision? 3x10^3 3.2x10^3 3.21x10^3 3.212x10^3***

19. ## math

multiply and write the answers without exponents. (3x10^2)x(2x10^4)

20. ## physics

hi! i am having so much trouble understanding 2 problems from our module, and i would just like some guidance from anyone here! any help is appreciated! thank you in advance and sorry for the trouble. first is: A particle of charge 3x10^-9 C is located at

21. ## Math

Write the following number in standard form (4X10 4th power)+(3X10 3rd power)+(2X10 2nd power)+(5X1)=

22. ## Chemistry

In an experiment, 0.0300 moles each of SO3(g), S02(g), and O2(g) were placed in a 10.0L flask at a certain temperature. When the reaction came to equilibrium, the cocentration of SO2(g) in the flask was 3.50x10^-5 molar. What is Kc for the reaction?

23. ## Chemistry

What is the pH of a 1.24 mol/L solution of HCN(aq) if its Ka = 6.2 x 10^-10? I am not sure how to this question... I did 6.2x10^-10/ 1.24?? I am not sure if it is right OR are we suppose to find the Kb value which i already did Kb= kw/ka =

24. ## math

Shania is having trouble understanding her algebra assignment. To help her understand, she asks Mark why is x^2*y^3 not equal to (x,y)^5 Which of the following responses would be best for Mark to give? A. “You should multiply the exponents rather than

25. ## Math

^=exponents /= divide So I am not sure how to do this. It is an example in my book but I still don't get it. Can you work through ti so I can do my real work. (-1^2+-1^-2)^-1 (-1^2+-1^-2)^-1 = First, do work within the parentheses. -1*-1 = 1 and -1-2 =

26. ## chem

The Ksp of PbI2 is 8.7x10^-9. Find the solubility of lead(II) iodide on mol/L. a. 1.3x10^-3 b. 9.3x10^-9 c. 6.6x10^-5 d. 1.6x10^-3

27. ## math

multiply and write answer without exponents (3x10^6)(2x10^4) Is the answer 60,000,000 ?

28. ## chem lab

ok i have to plot a graph for my kinetics our teacher said in the end it'd the end the graph would give me numbers like this, y = 1.3x10^2x-11.2 r^2 = 1 but when i plot it, i get weird numbers. am i supposed to plot exponents as i wrote them below? also

29. ## Math

Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures? Thank You!

Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures?

31. ## math - standard form

please could you check the first 2 then explain the method on the other 2 1)5.2x10^6 + 3x10^5 5200000+300000=5500000 5.5x10^6 2)4.2x10^5 + 1.28x10^6 420000+1280000=1700000 1.7x10^6 method please 3)6.5x10^-3 - 3.5x10^-9 0.065-0.000000035=0.064999965 how do

32. ## math

I have a few questions and if you could please get back to me asap that would be greatly appreciated! 1. fill in the blanks for the rules for working with exponents: a. if multiplying terms with the same base, you _____ their b. if dividing terms with the

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

34. ## Algebra

can you show me the steps for this problem (2x)to the 4th power (3xcubed)squared I'd like to help you, but I'm not sure what this problem is supposed to be. You can use the symbol ^ when using exponents. For example, 2x to the 4th power can be typed 2x^4.

35. ## chemistry

Calculate the molar solubility of MX2, if the Ksp=3.3x10^-8 i already asked this but im confused about one of the steps. Ksp = (x)(2x)^2 = 4x^3 = 3.3X10^-8 x = solubility = 0.00202M. but i don't understand do i substitute the x in 4x^3 3.3X10^-8 and then

36. ## Chemistry

Determine the molar solubility of Y for XY2 if Ksp is 2.2x10^-4. The 2 in Xy2 is a subscript. I found the Ksp equation which is ksp=[x^2+][Y^-]^2 Then I did the ICE table and got x and 2x for the equilibrium concentrations. Then I did: 2.2x10^-4=(x)(2x)^2

The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four

38. ## Chemistry

I am to do an equilibrium constant lab and I am supposed to only find the Kc value. i have to find the equilibrium constant for NaHCO3 (s) NaOH (s) + CO2 (g) at 800K. The partial pressure in the bulb reads 420 kPa on the manometer, 1 gram of NaHCO3 was

39. ## Social Studies 9

I have to write a pamphlet for my teacher, the pamphlet is on Charles the First, in the view of Walter Prynne. How am i supposed to do this? My teacher never explained how. she just said to do it and gave us a sheet that said basically what she had said,

40. ## Alzebra

What operations can you associate with coefficients? What operations can you associate with exponents? you can add, subtract, multiply, and divide coefficents, and exponents.

41. ## chemistry

1. (3.0x10^4) divided by (6.2x10^1) = 5x10^2? 2. (4.7x10^-3) divided by (9x10^-4) = 5x10^-6 3. (3.0x10^4) times (6.2x10^1) =1.9x10^6 4. (4.7x10^-3) divided by (9x10^-4) =5x10^-6 5. (5.1x10^2) divided by (3x10^4)

42. ## Math

3) Explain how the laws of exponents work with rational exponents and give at least one example of an expression containing rational exponents... Please help.. I can't find the answer to this anywhere..

43. ## algebra

The drilling of a jackhammer was measured at 131dB. The sound of whispering was measured at 28dB. (Note that log2=0.301). The ratio of the intensity of the drilling to that of the whispering would be approximately: (A) 2X10^10 (B) 3X10^103 (C) 3X10^10 (D)

1.Which of the following is greater than 4.3x10^9 A)2.1x10^9 B)3.2x10^9 C)5.3x10^9 D)7.4x10^8*** 2.Which of the following are less than 6.5x10^-5? A)1.4x10^-3 B)2.5x10^-4 C)7.8x10^-5 D)4.6x10^-6*** 3.Which number is greater than 5.5x10^-7 A)1.8x10^-12

45. ## Crystal

So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This

46. ## Physics

So this is the problem: A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at 6.3x10^4 m/s and is 4.2x10^10m away from the sun. When it is at the farthest distance, 7.5x10^12m away, how fast is it going? This

47. ## mat 117/ algebra

My question is about scientific notations. Here is the problem. What I need clarification on is the power signs. When to add, subtract or multiply? (2.4 x 10^-5)(4 x 10^-4) is the anwer 9.6 x 10^-9 or 9.6 x 10^20 The answer is NOT 9.6 x 10^20. Rember your

48. ## math

(2x10^5)(3x10^6)

49. ## Significant Figures

Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures?

50. ## Physics

Add (9.3x10^3) + (9.3x10^4) + (0.011x10^6) using correct significant figures?

51. ## Math

what is the answer to 3x10=(2x10)+(1x__)

52. ## math

when simipliified (2x10^3)(3x10^4)is equivalent 6x10^7

53. ## Chemistry

The speed of light is = 3x10^8 m/s. How long w ill it take to reach Pluto, 278,000,000,000 km away? This is how I solved it: 3x10^8m/s x 1km/1000m x 1/2.78x10^11 km I keep getting the wrong answer. I am not sure if this is how you set this conversion??

54. ## Math

Multiply (1-5x³)² I am not sure If I add or multiply the exponents would this be solved as 1-5x^6?

55. ## math

kelly solved the following problem on her recent math test 121/11+4*8=120 the answer was marked wrong by your teacher and kelly is asking you to explain why she missed the promblem.whicthsolutions would you tell her A.divide 121 by 11,multipy 4 by 8 then

56. ## Physics

A capacitor has a charge of 5 µC when charged by a potential difference of 1.5 V. What is the capacitance of the capacitor? 3.3x10^-6 F 3.3x10^6 F 7.5x10^-6 F 0.3x10^6 F I would think the answer is 3.3X10^F, or choice B

57. ## Math anxiety!!!

Multiply and simplify by factoring. Assume that all expressions under radicals represent nonnegative numbers. ∛(y^13 ) ∛(¡¼16y¡½^14 ) Am I supposed to add the exponents and multiply the little 3's?

58. ## algebra

I'm really confused on how to do a few questions. i am supposed to write the expression using exponents. 1. (2a)(2a)(2a)+(x+y)(x+y) i am supposed to evaluate this one 1. 4(2+2)^3/(3+1)^2 thanks so much

59. ## Math

When you are adding variable with exponents, do you add the exponents too? What would ab2 + 2ab2 =

60. ## algebra

Simplify using only positive exponents. (2r^-1s^2t^0)^-2 ---------------- 2rs Thanks in advance! Working this out: (2^-2 r^2 s^-4)/ (2 r s) = r^2/8rs^5 Note: Anything to the 0 power is equal to 1. I hope this will help. Sorry but can you help me please I

The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four

62. ## algebra

Can some kind soul please assist me with this question? :) Simplify the expression. Use only positive exponents: (4p^2q)(p^2q^3) Bless you! 4 p^4 q^4 Exponents add when multiplying Even when there's two sets of parenthesese?

63. ## Math Uugghhh

Okay the problem says I have to multiply (-2t)^2(3t^7)^2 SO what am I supposed to do, add the exponents then multiply -2t by 3t? Geez this is so confusing. If I square everything inside the first parentheses by 2 I get (4t^2) the second parentheses would

The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four

65. ## Physics

The engine of a train has a mass of 5x10^4 kg. it can accelerate six railway cars having a total mass of 3x10^5 kg by 0.4 m/s^2 (the 6 railway cars have a combined mass of 3x10^5). what acceleration can the same engine using the same force give to four

66. ## Physics

At liftoff, a rocket has a mass of 2x10^6 kg. It expels hot gas which provides an upthrust of 3x10^7. Find the initial accelerating of the rocket.

67. ## algebra

When you add two numbers with exponets, say 2x^3+5x^6, do you multiply the exponents or add them? thank you-Alissa.

68. ## Physics 11

I need help on this question 79 g of water at 95 degree Celsius were added to tap water at 22 degree Celsius, and the Temperature of the mixture after all thermal energy transfer ended at 36 degree Celsius. What was the mass of the tap water? (teacher's

69. ## Math, plz help!

1. We multiplied: x to the exponent of 3 muliplied by x to the exponent of 4. a) Suppose the exponents 3 and 4 were different. Would the adding method still work? Explain. b) Suppose the base x was different. Would we get similar results? Explain. 2. We

70. ## Another problem to check..please check my work...

(-2x^2y)^3*(5xy^3)^2=(-2x^2y)^3 = -8 x^6 y^3 *Is this correct.? (-2x^2y)^3 * (5xy^3)^2 = (-8x^6y^3) * (25x^2y^6) = -200x^8y^9 When you have the same base, you add exponents when multiplying. For example, x^2 * x^3 = x^5. When you have the same base, you

71. ## math

To add numbers using scientific notation, multiply the coefficients and then add the exponents. true or false true

72. ## math

would 64974000345 be written 6.4*10^10 or 6.4974*10^10 2) how would you write 7.991*10-10 in scientific notation? 3) does 9.0 have 2 (sf) and 100.0000 have (7sf)?I'm confused about the trailing zeros when it comes to decimal points.These are trailing

73. ## math

Could someone please how this problem should be solved? Simplify and write the answer in exponential notation using positive exponents. 2 to the 4th x 2 -2nd power

74. ## English

1. He is a social science teacher. 2. He is teacher. 3. She is a home economics teacher. 4. She is a HE teacher. 5. She is a technical arts and homemaking teacher. 6. She is a TAH teacher. 7. She is a healthe education teacher. 8. She is a HE teacher. 9.

75. ## Chemistry

Find the frequency if given energy 6.3x10^-19 Do I use the formula E=hf? 6.3x10^-19=6.626x10^-34(f) Then do I divide E and H?

76. ## math

Find x 1) 6log(down)10 x=1.6 2) e^-4x=1.943 3) 1.3x10^-4 x=4.7/x -6.3x10^-3 4) 6lnx=1.6 5) x^2¡Ñ23y^2 = 1.78x10^32¡Ñz please help I really can't solve this problem.

77. ## Biology

You are supposed to add 0.1 mol of a substance with molecular weight = 354.9 to 1 liter of water. How much should you add? Choose one.

I'm so lost on this math Hw it's over factoring variables and I don't get it. Like my teach said that we are supposed to have the number and letter in front of everything. For example: -14x^2-7x+21 For factoring I got 7x(-2x-1+3) Because my teacher told me

79. ## Math

Name the property that justifies each step. [(2x100)+(3x10)]+[(1x100)+(5x10)] = (2x100)=[(3x10)+(1x100)]+(5x10) I think this is Commutative = (2x100)+[(1x100)+(3x10)]+(5x10) I think this is Distributive property =[(2x100)+(1x100)]+[(3x10)+(5x10)] I think

80. ## Algebra2

i was wondering if someone could check the answer i got for this math problem 7+2(5-2*9) = 243 I got -19 I think you're supposed to do the parentheses first...but within that, you're supposed to do the multiplication and THEN the subtraction, and then mult

81. ## algebra

y(-9) (times) y(-5) Simplify exponents add. y^(-5-9) is ... Thank you

82. ## English

In English class, I have to write a 2 voice poem. My teacher said that I am supposed to make it 10 lines longs on each side. Does that mean that it is supposed to go back and forth 10 times or each side has to have 10 lines? (What I mean by that is that

83. ## Algebra

I have two terms. 3.675v^1 + 0.096v^2 do I add these exponents?

84. ## Math(Please Check My Work.)

3a^3b^2(-a^3b-a^2b^2)=-3a^9b^3-3a^6b^4 *is this correct.?- Remember to add exponents when multiplying with the same base. (3a^3b^2)(-a^3b - a^2b^2) = -3a^6b^3 - 3a^5b^4 I hope this will help.

85. ## Math

(w^-2j^-4) ^-3 (f^7 f^3) simply using positive exponents I think I double of the the threes and add. Little confused

86. ## math

I solved (3x10^6)(2x10^5). My teacher said we were supposed to add the exponents. Do we still foil when we use exponents? Thanks, Kerry.

87. ## math

Which of the following is greater than 4.3x10^9 A. 2.1x10^9 B. 3.2x10^9 C. 5.3x10^9*** D. 7.4x10^8 Which of the following is less than 6.5x10^-5 A. 1.4x10^-3*** B. 2.5x10^-4 C. 7.8x10^-5 D. 4.6x10^-6 According to the 2010 census the population of Nebraska

88. ## Math

Which of the following is greater than 4.3 x 10^9. A.2.1X10^9*** B.3.2x10^9 C.5.3x10^9 D.7.4x10^8

89. ## maths

Q:if x= 2x10^5 and y=3x10^-3 correct to one significant figure,find the greatest and least possible value of: i)x/y

90. ## math

x^7/x^-4 my book says the answer is x11, but how? aren't you supposed to subtract the exponents when dividing?

91. ## math

simplify: x^(3/2)(x + x^(5/2) - x^2) add exponents when multiplying. For instance, the first term above x^3/2 * x=x^3/2 * x^2/2=x^5/2 add exponents when multiplying. For instance, the first term above x^3/2 * x=x^3/2 * x^2/2=x^5/2 ok, so would the answer

f^2*f^3 Do I add the exponents or multiply? Thank you. would it be f^5 or f^6?

93. ## Math

For this problem (2)^0 (-2)^0 would I add the exponents? I f so what do I do with 2 and -2?

94. ## Math

What is the product of 5x^2 and 3x^5? exponents add, so 15x7

95. ## Math

For this problem (2)^0 (-2)^0 do I add the exponents? If so then what Would I do with 2 and negative 2

96. ## Pre Calc

To find the number of factors of a number, you get the prime factors and add one to each exponent, then multiply all the exponents. I know how to get that, but I am wondering why you add one. Mathmatical explanation? Can anyone help?

97. ## physics

when lightning strikes you can see it at a speed of 3x10^8m/s. But you hear thunder at about 340m/s in 70 degrees air temperature. a) If you are a mile away from lightning, how long of a delay is there? b) if the delay between the lightning and thunder