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

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Question 947795: A 36 inch board is to be cut into three pieces so that the second piece is twice as long as the first peice and the third piece is 3 times a long as the first.if x represents the length of the first piece, find the length of the 2nd and 3rd peice too

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Question 948822: what is they answer in these question 7-10
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Question 948820: d varies jointly as h and g.If d=15 when h=14 and g=5,find g when h=21 and d=8
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Question 950799: 5n=12+n
Click here to see answer by Alan3354(69443)

Question 951353: If y varies inversely as x and y = 725 when x = 20, find x when y is 50.
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Question 952001: Rosa has designed a pulley system for a school science project. She has determined that as the coefficient of friction increases, the efficiency of the pulley decreases. With a coefficient of friction of 0.2, the efficiency of the pulley is 75%. What would you expect the efficiency to be if the coefficient of friction increased to 0.3?

Click here to see answer by stanbon(75887)

Question 956755: Write a function that models each variation:
a. x=-1 when y=5, y varies inversely as x.
b.x=3 and y=12 when z=2, z varies directly with y and inversely with x.
Click here to see answer by stanbon(75887)

Question 956968: Hello,
Is it possible to find function f(x) such that its inverse f-1 = 1/f ? if so, what function(s) satisfies this claim?

Thank you,
Muneef Halawa
Click here to see answer by Fombitz(32388)

Question 957724: Could you help me with the algabra question for y=.3x
Click here to see answer by Alan3354(69443)

Question 958327: 3(4r-8)=36 is the equation and I need to find what r equals, how do I find the answer?
Click here to see answer by MathLover1(20849)

Question 958327: 3(4r-8)=36 is the equation and I need to find what r equals, how do I find the answer?
Click here to see answer by fion6002(19)

Question 960237: What is the answer to the following: r divided by (-5) = 6.
Thanks,
C
Click here to see answer by rfer(16322)

Question 960427: What would be the last two digits of the following multiple
102 X 104 X 108 X 110 X 112 X 106
Click here to see answer by Alan3354(69443)

Question 961098: Hello,
Can you please help me solve this problem?
Solve for x: x+3/5=9/10
Click here to see answer by MathLover1(20849)

Question 961106: Hello,
Can you please help me solve this problem.
John Penna sells soybean seeds to seed companies. After he had driven 210 mi, 5/6 of his sales trip was completed. How long was the total trip?
Translate and write the equation, then solve.
Thank you,
Sherri
Click here to see answer by Alan3354(69443)

Question 961643: show that f(x)= 3x-2 divided by 5x-3 is its own inverse.
Click here to see answer by Fombitz(32388)

Question 962656: inverse funtion: f(x)=3-x
Click here to see answer by hkwu(60)

Question 964161: what is the square root of 361( methodically)
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Question 968266: Dear Tutor, I am really struggling with this question and desperately in need of your help to solve this question.

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Question 968604: find f(f^-1(241)) if f(x)=(3x-27)/14

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Question 970167: Simplify the Rational Expression. State any restrictions on the variable.
p^2 + 10p + 21 / p + 7

Answer Choices:
A) p + 3 ; p ≠ -7
B) -p + 3 ; p ≠ 7
C) -p - 3 ; p ≠ -7
D) p - 3 ; p ≠ 7

Click here to see answer by josgarithmetic(39617)

Question 970451: f(x)=7+logx
Click here to see answer by Alan3354(69443)

Question 970836: (a+b+c)(b+c-a)(c+a-b)(a+b-c)

Click here to see answer by MathLover1(20849)

Question 972253: Please solve it.
(2y+1/5) -(3y-2/10 )+(y/2)
Click here to see answer by Theo(13342)

Question 972464: solve the equation for m by filling in the blanks
8m-24=+6
Group using additive inverses -2m+8m-24=2m+6+(__)
Combine the like variables ____ -2=0+6
Group using additive inverses ____+6-24=6+4
Combine the constants 0+6m=_____
Solve for m m=_____
Click here to see answer by macston(5194)

Question 972997: 12men can dig a pit in 5days. How many more men would you require to dig the same pit in 3days?

Click here to see answer by solver91311(24713)

Question 973269: If f(x) = 7x-3/2
find f(15)
Click here to see answer by Boreal(15235)

Question 973273: If f(x) = 8x-4 Find
f(c)
Click here to see answer by Alan3354(69443)

Question 973270: If f(x) = 8x-4 find
f(5)
Click here to see answer by MathLover1(20849)

Question 973822: 18 more than the product of 0.5 and the difference of 16 and 7
Click here to see answer by Boreal(15235)

Question 973988: An integer is divided by 7 giving a remainder of 5. The resulting quotient when divided by 5 gives a remainder of 3. The resulting quotient is then divided by 9 giving a quotient of 1 and a remainder of 1.
What will the finale remainder be if the order of the divisors is reversed?
Click here to see answer by josmiceli(19441)

Question 974008: An experiment consists of randomly selecting a card from seven cards numbered from 1 to 7. One card is selected at random and replaced.
What is the probability of selecting two odd numbers? Express your answer as a fraction in simplest form.

Click here to see answer by stanbon(75887)

Question 974128: find the product (5x-4)(x^2-6x+5)
Click here to see answer by josgarithmetic(39617)

Question 974904: Inverse of f(x)=5x+10
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Question 976112: Please solve and show work. Thank you.
Find the inverse for the matrix, it if exists.
-2 0
-6 -3
Thank you.
Click here to see answer by Boreal(15235)

Question 976235: Please solve and show work. Find the inverse for the matrix, if it exists.
5 5
0 -4
Thank you.
Click here to see answer by rothauserc(4718)

Question 976113: Please solve and show work.
Add the 2 matrices below, where possible.
3 -5
-5 + 1
-4 6
Thanks.
Click here to see answer by Fombitz(32388)

Question 976521: Add the matrices below, where possible. 3 -5
-5 + 1
-4 6
Not sure how it shows on your side, but there are 2 columns, 3 rows, 6 set of numbers. Please solve, Thank you.
Click here to see answer by Fombitz(32388)

Question 976520: Find the matrix product, if possible 3 -1 0 -1
6 0 3 6
I'm not sure how it reads on your end, but there are 2 rows, 4 columns, with eight set of numbers. Please solve and thank you.
Click here to see answer by Fombitz(32388)

Question 977706: find the inverse function. a.) f(x)=6-3x, b.)f(x)= 3 square root of x c.)f(x)= x^2+2
Click here to see answer by Cromlix(4381)

Question 977819: Problem: Find the odd number pair in the given question.
A) 24-81
B) 33-91
C) 28-44
D) 20-11
I think answer is D but doubt about that please solve the question with explanation.
please sir.
Click here to see answer by Edwin McCravy(20055)

Question 979428: Please help me solve this if 24.3-x+17.03=31.62 find the value of x.
Click here to see answer by rothauserc(4718)

Question 980010: The sum of two digits of a two digit number is 14.The difference between the first digit and the second digit of the two digit number is 12.What is the product of the two digit of the two digit number?
A 56
B 48
C 45
D cannot be determined
E none of the above
Click here to see answer by Edwin McCravy(20055)

Question 980424: the sum of 6 and x
Click here to see answer by MathLover1(20849)

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