Questions on Algebra: Exponents and operations on exponents answered by real tutors!

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 Algebra: Exponents and operations on exponents Solvers Lessons Answers archive Quiz In Depth

 Question 245909: Factor the polynomial: 12x^2-5x-3 I have tried trial and error and have set up every solution I can think of but none of them are factoring right. Click here to see answer by solver91311(17059)

 Question 246291: need guidance on adding exponents the problem is 40a^8 + 16a^7 + 25a^9 thank you Click here to see answer by Theo(3504)

 Question 229869: How do I write 0.04 in exponential form? Click here to see answer by richwmiller(9144)

 Question 246704: for all x > or equal to y > or equal to, the sqaure root of 250x9y4 The computer program i am using for compass practice says to find the square root of x9 which is x4 times the square root of x. they then say that it is equal to 5x4 times y4 times the square root of 10x. why is this so? I don't understand why they are equal.... Click here to see answer by jim_thompson5910(28696)

 Question 248007: Working on this problem and don't know how to approach it - Use the given conditions and the table below to find C, a, and f(x) = Ca^x Given: f(1) = 18 and f(2) = 9 x | -1 | 0 | 1 | 2 ---+----+----+----+---- y | | | | Plugging in the givens I get this - x | -1 | 0 | 1 | 2 ---+----+----+----+---- y | | | 18 | 9 but don't know where to go from there. Thanks for your help - Ryan Click here to see answer by jim_thompson5910(28696)

 Question 248379: can 8 to the 4th power times 8 to the 7th power be simplified? Click here to see answer by edjones(7569)
 Question 248379: can 8 to the 4th power times 8 to the 7th power be simplified? Click here to see answer by richwmiller(9144)

 Question 248453: I just learned this today and not sure how to do this. Please help. I have a quiz tomorrow on it. It is factoring. Thank you!! 4m^2+20m+24 Click here to see answer by richwmiller(9144)

 Question 248456: I just learned this today and not sure how to do this. Please help. I have a quiz tomorrow on it. It is factoring. Thank you!! 56-15z+z^2 Click here to see answer by jim_thompson5910(28696)
 Question 248456: I just learned this today and not sure how to do this. Please help. I have a quiz tomorrow on it. It is factoring. Thank you!! 56-15z+z^2 Click here to see answer by checkley77(12569)
 Question 248456: I just learned this today and not sure how to do this. Please help. I have a quiz tomorrow on it. It is factoring. Thank you!! 56-15z+z^2 Click here to see answer by jsmallt9(3296)

 Question 248492: homework assignment has: (fraction) 5/6^2 (5/6 to 2nd power exponent); i got 5/36 - did i do this correctly? thanxxx! Click here to see answer by tutorcecilia(2152)
 Question 248492: homework assignment has: (fraction) 5/6^2 (5/6 to 2nd power exponent); i got 5/36 - did i do this correctly? thanxxx! Click here to see answer by College Student(505)
 Question 248492: homework assignment has: (fraction) 5/6^2 (5/6 to 2nd power exponent); i got 5/36 - did i do this correctly? thanxxx! Click here to see answer by jsmallt9(3296)

 Question 248660: What is the solution for 8w/exponent or power of 2x+1=4w/exponent or power of 1-x? I've tried dividing the whole numbers by 4 first and I get -1/3, multiplying both sides of the exponents out first and then solving it and I get -3/5, and subtracting the exponents first which gave me 1/6, none of which get me the correct answer of -1/8. Yesterday I somehow got -1/4 for the answer but I forget how. I'm studying for the ACT. Click here to see answer by jsmallt9(3296)

 Question 249009: I need help with this one please: A print is 10 cm longer than it is wide. It is mounted in a frame 1.5cm wide. The area of the frame is 399cm^2. Find the dimensions of the print. thank you!! Click here to see answer by dabanfield(803)

 Question 249008: I need help solving please: When the length of a square is increased by 6 and the width is decreased by 4, the area remains unchanged. Find the dimensions of the square. Thank you!! Click here to see answer by dabanfield(803)
 Question 249008: I need help solving please: When the length of a square is increased by 6 and the width is decreased by 4, the area remains unchanged. Find the dimensions of the square. Thank you!! Click here to see answer by Earlsdon(6294)

 Question 249003: I need help on this word problem. A rectangle is 3cm longer and 2cm narrower than a square with the same area. Find the dimensions of each figure. Thank you! Click here to see answer by dabanfield(803)

 Question 249007: Please help me solve this equation: A rectangular swimming pool is 4m longer than it is wide. It is surrounded by a cement walk 1m wide. The area of the walk is 32m^2. Find the dimensions of the pool. Thank you! Click here to see answer by checkley77(12569)

 Question 248996: I need help on the following word problem: A rectangle is 4m longer than it is wide. If the length and width are both increased by 5m, the area is increased by 155m^2. find the original dimensions. Thank you so much. Click here to see answer by checkley77(12569)

 Question 249192: Hello, Can someone help me with these, I have some of the graphs but I not able to post them to this screen, and the last two problem I stuck on them since yesterday. Please help me 1. Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Use the resulting pairs to plot the graph. State the equation of the line asymptotic to the graph. . I have a graph but I not sure that it is right and it will not post to this screen. 2. evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph. Again I have the graph but I not sure if it is right and I can not post it to this screen 3. solve; the number of dislocated impulses per cubic inch in a transformer increases when lightning strikes by D=1900(2)^x, where x is the time in milliseconds fo the lightning strike. Find the number of dislocated impulses at x=0 and x=4 4. how long will it take for the population of a certain country to triple if its annual growth rate is 2.8%?(round to the nearest year). Use the exponential growth model P(t)=P0e^kt Thank you, Tammy Click here to see answer by jim_thompson5910(28696)

 Question 249404: what is the awnser to 7p to the 6th power Click here to see answer by College Student(505)

 Question 249576: I think I'm just confusing myself. What would (6y)^7 * (6y)^6 equal? Click here to see answer by chosenpoint(26)

 Question 251679: Do you have worksheets from laws of indices? Click here to see answer by richwmiller(9144)

 Question 251809: what is 2x to the 4th y to the -4 z to the -3 over 3x to the 2nd y to the -3 z to the 4th ? Click here to see answer by stanbon(57940)
 Question 251809: what is 2x to the 4th y to the -4 z to the -3 over 3x to the 2nd y to the -3 z to the 4th ? Click here to see answer by dabanfield(803)

 Question 252069: can you please give me a detailed example of real world complex power problem with the answer. i really need another example to help prepare me for my test. thank you so much for your help! Click here to see answer by stanbon(57940)

 Question 252127: Solve this system for (x, y) : 2^x.4^y = 16 and 4^3x-2.(1/2)^y = 128 Click here to see answer by vksarvepalli(154)

 Question 252151: The assignment is as follows: Look at the expressions below. Write a narrative description of what you would do to simplify each one. 1. (16)^(1/2) 2. √100 I struggle with these kind of assignments. I’m not sure how to interpret the assignment. My first thought is the answer is simply “I would calculate the square root of each number”. That is what I “would” do to simplify each one. Does anyone have any thoughts on what the instructor is looking for? Thanks! Click here to see answer by jim_thompson5910(28696)

 Question 252367: Suppose that x and y are real numbers such that 4^x / 2^x+y = 8 and 9^x+y / 3^5y = 243 Which of the following is equal to xy? (a) -1 b 12/5 c 4 d 6 e 12 Click here to see answer by palanisamy(496)