Questions on Algebra: Inverse operations for addition and multiplication, reciprocals answered by real tutors!

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Algebra: Inverse operations for addition and multiplication, reciprocals

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Question 82302: THE SUM OF A NUMBER AND TWICE ITS RECIPROCAL IS 9/2. fIND THE NUMBER
Click here to see answer by checkley75(3666)

Question 82567: If f(x) = x(x + 1)(x - 4), use interval notation to give all values of x where f(x)> 0.
Click here to see answer by Nate(3495)

Question 82624: Solve. Loga(7x+1)=Loga(4x+16).
Click here to see answer by josmiceli(3009)

Question 82828: Find the inverse of the function f(x)= x ^1/3 + 2. I am so confused!! Can someone please help me????? FR
a)(x-2) ^ 3
b)x ^1/3 + 2
c)(y-2) ^ 3
d)Doesn't exist

Click here to see answer by stanbon(26274)

Question 83050: I have 9x-5=31 could you help me solve it step-by-step? Tomorrow I have my finals and I totally forgot how to do these. Thanks!
Click here to see answer by scott8148(3382)

Question 83792This question is from textbook algebra 1 california edition
: What is the additive inverse of a number?This question is from textbook algebra 1 california edition

Click here to see answer by nilan(10)

Question 84168: Three colors are mixed together in varying percentages. Each color has a different reflectance value. Reflectance values are Gray = 15%, Black =5% and White = 25%. The are mixed together in the following amounts Gray 35%, Black 15% and White 50% for a 100% total.
What is the reflectance average when the three different colors are mixed together in the listed percentage?
Color Reflectance Value Percent of Mix
Gray 15% 35%
Black 3% 15%
White 25% 50%

Click here to see answer by ankor@dixie-net.com(6693)

Question 84322: 3
____ + ___1
x + 3 x
Click here to see answer by rapaljer(3620)

Question 84355This question is from textbook Algebra 2 An incremental Development
: We need help. My daughter has been working on this problem all weekend and we still do not get the right answer. We are working on inverse variation as a ratio. The problem is : The ratio of acrobats in blue to acrobats in pink was 4 to 5. Those who wore blue numbered 1200 fewer than twice the number who wore pink. How many wore blue, and how many wore pink? All help is appreciated. Thank you!This question is from textbook Algebra 2 An incremental Development

Click here to see answer by bucky(1732)

Question 84634: the denominator of a fraction is 2 more than the numerator. the sum of the fraction and its reciprocal is 34/15. find the fraction.
Click here to see answer by ankor@dixie-net.com(6693)

Question 85267: Please help me solve this problem.
Given: f(x)=x^2+3x+1 g(x)= x^3+1 h(x)=x^2-2 d(x)= x+1

find (f o g)(1/3)
Click here to see answer by stanbon(26274)

Question 85993: What is (2-x)(x+2)
Click here to see answer by Earlsdon(4900)

Question 86119: My daughter has asked me for help in Algebra and I know the answer to the following problem, but I do not know the equation.
A pair of jeans are on sale for $72.25. They have been marked down 15%. What was the original price?
Click here to see answer by dolly(163)

Question 86781: If two numbers are opposite of each other are their reciprocals also opposite?
Click here to see answer by Flake(45)

Question 88653: What is the reciprocal of (-1/2)(8/4)(12)
Click here to see answer by jim_thompson5910(13794)

Question 88754: how do I solve this question
Multiply.
2y^3 * 5y^6

Click here to see answer by checkley75(3666)

Question 89356: 9x+7=5x-3
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 89356: 9x+7=5x-3
Click here to see answer by stanbon(26274)

Question 90940: can you help me figure out how to do this problem? i am having a brain hiccup
x+1/3x=8

Click here to see answer by stanbon(26274)

Question 91461: Given the function f(x) = 5x+2, find a formula for the inverse function.
Click here to see answer by stanbon(26274)

Question 91723: the question is X+y = 13 & 22x+36y=356 university of phoenix elementary and intermediate algebra
Click here to see answer by tutorcecilia(2042)

Question 92161: Find the solution sets for the following:
In (3x) = 6
Click here to see answer by bucky(1732)

Question 95480: Please help me find the inverse of the function.
f(x)= (-5+5x)/(3-x)
Click here to see answer by Edwin McCravy(2922)

Question 95715: what is the reciprocal of 9/8?
what is the reciprocal of -2.45?
what is the reciprocal of 3 1/5?
what is the reciprocal of 7/2m?
Click here to see answer by checkley71(8405)

Question 96973: HELP!
I need to know how to solve the problem 100/101 divided by 100. the chapter is
multipling and dividing rational numbers. I have worked the problem out, but I need to see if it is correct.
thank you catherinetimm@peoplepc.com
Click here to see answer by mathslover(126)

Question 97768: k-13=18
Click here to see answer by elima(1433)

Question 97767: 9+x=16
Click here to see answer by mathslover(126)

Question 97774: 1479+17c
Click here to see answer by checkley71(8405)

Question 97854: -2m + 4n^2 for m=-6 and n=-5
Click here to see answer by rmromero(383)

Question 98240: what is the reciprocal of (-1/5)(15)
Click here to see answer by checkley71(8405)

Question 98250: A number is 2 1/10 more than its reciprocal. Find the number.
{2/3, 3/5, 5/4, 5/2}
Please teach me how to do this in order by order!!! PLEASE!!! Thank you.
Click here to see answer by checkley71(8405)

Question 98251: f(x)= 5x-9 and g(x)= x+5/9
find f(g(x) and g(f(x) and determine whether each pair of functions f and g are inverses of each other.
f(g(x)=5(x+5/9)-9
5x+25/9-9
5x-16/9
g(f(x)= 5x-9+5/9 = 5x-4/9
f and g are not inverse
is this correct?
Click here to see answer by stanbon(26274)

Question 98600: twice the reciprocal of a number is nine more than five times the number. find the number
Click here to see answer by checkley71(8405)

Question 98601: twice the reciprocal of a number is nine more than five times the number. find the number
Click here to see answer by Edwin McCravy(2922)

Question 98597: twice the reciprocal of a number is nine more than five times the number. find the number
Click here to see answer by Edwin McCravy(2922)

Question 98594: twice the reciprocal of a number is nine more than five times the number. find the number
Click here to see answer by Edwin McCravy(2922)

Question 98037: What are the steps for solving a multiplication problem involving inverse operations?
Click here to see answer by scottnascar(12)

Question 97535: (1 dived by 5)5 times 14

Click here to see answer by scottnascar(12)

Question 99895: If a quiz has four true-false questions. How many different patterns of answers are possible?
Click here to see answer by checkley71(8405)

Question 99904: If a quiz has four true-false questions. How many different patterns of answers are possible.
Click here to see answer by checkley71(8405)

Question 100337: I think I know how to solve this problem, but Im not really sure, and I think the answer is 12. Please help me, the problem is:
The number of days needed to assemble some machines varies directly as teh number of machines. If it takes 32 days to assemble 16 machines, how many days will it take 24 machines?
Click here to see answer by checkley71(8405)

Question 100338: I have no idea how to solve this problem:
If y is inversely proportional to the square of x, and y=1 when x=4, find y when x=8.
Click here to see answer by stanbon(26274)

Question 100336: I kind of understand how to do these f◦g and g◦f problems, but I dont know how to do this one because the fraction throws me off. Please help me!!! Thank you!!!! The problem is:
For and , show that f ◦ g ( x ) = x and g ◦ f ( x) = x.

Click here to see answer by stanbon(26274)

Question 100691: when you are dividing a negative and a positve is the quitent a negetive or a positive
Click here to see answer by stanbon(26274)

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