Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)
Question 991373: Please help, i do not understand this
Multiply and simplify completely, including the elimination of all negative exponents:
(3x^5)/(4y^10) (4^4y^7)/(3^3X^9)
Enter your answers for the numerator and denominator separately in the boxes below.
Click here to see answer by Alan3354(69443)   |
Question 997345: I can not work this problem.
4 3/4 (3/4 is the exponent)
I understand how to work one like this.
4 1/2 (1/2 is the exponent)=2
Or
8 1/3 (1/3 is the exponent)=2
I would appreciate your help. Thanks so much.
Click here to see answer by Boreal(15235)  |
Question 998745: If Miguel Cabrera has 24 at bats in the World Series (not this year) and gets 9 hits, in what percent of his at bats did he get a hit? ( the decimal form would be his batting average)
I did this,
9/24 = .375 and moved the decimal 2 spaces to the right to get 37%
is this correct?
Click here to see answer by jim_thompson5910(35256) |
Question 998804: So I have a basic question about slope intercept. This is an equation in my book that I'm not following (I understand how to go about solving the question but not how the signs work)
This example in the book is called 'Solving a System Linear Equations:
to graph each equation, write the equation in slope intercept form.
-2y = -x-2
divide all those by -2 and we get
y=1/2x+1
what I don't understand is how 2 divided by -2 equals positive one in the answer? I thought we simple changed the sign to + because of y=mx+b but in another equation
-x+3y=-6
(after dividing all by 3)
the answer is y= 1/3x-2
I thought it ould have been +2?
why is are the answers to these slope intercept question sometimes + and sometimes - in the answers?
Click here to see answer by josgarithmetic(39623) |
Question 998800: Dollar Bill invested money in an account earning 4% simple interest. At the end of 5 years, he had a total of $14,400. How much did he originally invest?
I know this is I=PRT, but I always struggle with it. A step by step process would be much appreciated.
Click here to see answer by mananth(16946)  |
Question 1000000: My question is based around 'Solving Systems of Equations by the Substitution Method'.
I understand the concept of plugging in the x or y value into the one or the other equation but for some (very frustrating) reason whenever I follow these steps I don't come out with the right answer. I will list two below.
1. 4x-y=-1
2x+4y=13
I chose to take the top equation (4x-y=-1) and make that into -y=-4-1 and change that further by dividing by -y to get y=-4x+1. MY FIRST QUESTION is why did I have to change -1 to +1?
I then tried to plug y=-4x+1 into the 2x+4y=13 but I never get the right answer! Help?
2. x-3y=-11
6x-y=2
please help?
Click here to see answer by mananth(16946) |
Question 1000000: My question is based around 'Solving Systems of Equations by the Substitution Method'.
I understand the concept of plugging in the x or y value into the one or the other equation but for some (very frustrating) reason whenever I follow these steps I don't come out with the right answer. I will list two below.
1. 4x-y=-1
2x+4y=13
I chose to take the top equation (4x-y=-1) and make that into -y=-4-1 and change that further by dividing by -y to get y=-4x+1. MY FIRST QUESTION is why did I have to change -1 to +1?
I then tried to plug y=-4x+1 into the 2x+4y=13 but I never get the right answer! Help?
2. x-3y=-11
6x-y=2
please help?
Click here to see answer by MathTherapy(10555)  |
Question 1000504: Solving linear equations by addition
2x+2=-3y+9
3x-10=-4y
Why the heck is the 9 there on the first equation, I've tried subtracting it by the 2 in the first equation but in the end my answer is incorrect. If that 9 was gone I would be able to breeze through this problem.
Click here to see answer by solver91311(24713)  |
Question 1000508: There just isn't enough information on this to understand it-
The difference of two positive numbers is 2. The sum of the numbers is 36. Find the numbers.
I can guess fairly easily in my head, but if you could please explain to me the equation process that would be wonderful.
Click here to see answer by solver91311(24713) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330
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