Questions on Algebra: Operations with Signed Numbers answered by real tutors!

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Question 168343: not sure what kind of math it is, as I have never done it before, I am helping my grand daughter with her math home work. The question is -17-(-25).
Thank you Sue: not sure what kind of math it is, as I have never done it before, I am helping my grand daughter with her math home work. The question is -17-(-25).
Thank you Sue
Click here to see answer by Fombitz(1744)

Question 167390: Dear Tutor,
I have a big proplem. I moved to Austia 2 years ago and i did not know german so i was not able to do the math. In school we are learning Pre algebra and i do not know a thing. if you can may you send me a couple of tipps and explainations to algebra
Thank you!: Dear Tutor,
I have a big proplem. I moved to Austia 2 years ago and i did not know german so i was not able to do the math. In school we are learning Pre algebra and i do not know a thing. if you can may you send me a couple of tipps and explainations to algebra
Thank you!
Click here to see answer by ankor@dixie-net.com(4503)

Question 166547: this is an order of operation problem:
3x2÷6+2x3÷6
??????? =
3²+2²+1²
can you please help me on this problem i tried really hard but i cant seem to get it right.: this is an order of operation problem:
3x2÷6+2x3÷6
??????? =
3²+2²+1²
can you please help me on this problem i tried really hard but i cant seem to get it right.
Click here to see answer by stanbon(18788)

Question 166295: For which integers a,b,c does a-b-c=a-(b-c)? justify your answer
Justify your answer.
Please help, I do not understand this question.
thank you so much: For which integers a,b,c does a-b-c=a-(b-c)? justify your answer
Justify your answer.
Please help, I do not understand this question.
thank you so much
Click here to see answer by stanbon(18788)

Question 165648: I've tried this equation a few different ways, but I'm not coming up with the correct answer, please help.
[**The numbers beside the 't' are in subscript.][Note the dots are spacers to ensure the equation is in the correct format]

............KAT(t1 + t2)
If Q = -------------, solve for t
................d

Thank you.
Hope I'm posting in the right section.: I've tried this equation a few different ways, but I'm not coming up with the correct answer, please help.
[**The numbers beside the 't' are in subscript.][Note the dots are spacers to ensure the equation is in the correct format]

............KAT(t1 + t2)
If Q = -------------, solve for t
................d

Thank you.
Hope I'm posting in the right section.
Click here to see answer by Alan3354(1218)

Question 164872: -20 + 2k = k - 4k: -20 + 2k = k - 4k
Click here to see answer by padmameesala(34)

Question 164758: I need you to show me how to do the work on this problem, so I can help my niece with the remainder of her homework. There is no example. So I would be using this as an example.
The problem reads:
x/2 + 1 + 3x/4 = -9: I need you to show me how to do the work on this problem, so I can help my niece with the remainder of her homework. There is no example. So I would be using this as an example.
The problem reads:
x/2 + 1 + 3x/4 = -9
Click here to see answer by Mathtut(373)

Question 164398: a[2a-4(2+a)]: a[2a-4(2+a)]
Click here to see answer by midwood_trail(231)

Question 163531: -2 divided by (-1/2)=: -2 divided by (-1/2)=
Click here to see answer by checkley77(3412)

Question 163529: 6 2/3 x 2 1/4=: 6 2/3 x 2 1/4=
Click here to see answer by vleith(1162)

Question 162756: .12(y-6)+.06y=.08y-.07(10): .12(y-6)+.06y=.08y-.07(10)
Click here to see answer by checkley77(3412)

Question 162218: what is the value of expressions?
15-3+2-9=?
16+4:2+9=?: what is the value of expressions?
15-3+2-9=?
16+4:2+9=?
Click here to see answer by stanbon(18788)

Question 161311: Hiking up a mountain, you notice that the air temperature drops 10 degrees C for every 1,000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3,000 meters. Then evaluate the expression and explain its meaning.

Thank you in advance for any help you can provide.: Hiking up a mountain, you notice that the air temperature drops 10 degrees C for every 1,000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3,000 meters. Then evaluate the expression and explain its meaning.

Thank you in advance for any help you can provide.
Click here to see answer by stanbon(18788)

Question 160829: Can you please solve this question for me: 50+(2*10)/4*2: Can you please solve this question for me: 50+(2*10)/4*2
Click here to see answer by gonzo(444)

Question 160377: I need help with these type of equations please,
-9h=-3(-3): I need help with these type of equations please,
-9h=-3(-3)
Click here to see answer by KnightOwlTutor(216)

Question 160028: how do I solved this equation? 9.1x-5=8.1x
: how do I solved this equation? 9.1x-5=8.1x

Click here to see answer by checkley77(3412)

Question 159473: Solve for A, A, R not = 0
A=(MX^3)/R: Solve for A, A, R not = 0
A=(MX^3)/R
Click here to see answer by Alan3354(1218)

Question 157361: 8/9T = 64
what is the break down on solve the problem: 8/9T = 64
what is the break down on solve the problem
Click here to see answer by jpena78(1)

Question 158734This question is from textbook Thinking with mathematical models
: 3x+4=10This question is from textbook Thinking with mathematical models
: 3x+4=10
Click here to see answer by SAT Math Tutor(26)

Question 157701: -(7)--5x8: -(7)--5x8
Click here to see answer by jim_thompson5910(9217)

Question 157678This question is from textbook pre-algebra
: I don't have the math problem in the book. My teacher just gave it to me
3(n-1)=5n+3-2n
My answer is 4n=0
I don't think it's correctThis question is from textbook pre-algebra
: I don't have the math problem in the book. My teacher just gave it to me
3(n-1)=5n+3-2n
My answer is 4n=0
I don't think it's correct
Click here to see answer by Fombitz(1744)

Question 157220: 2*5-6: 2*5-6
Click here to see answer by checkley77(3412)

Question 156623: Find the difference of the given terms:
-15a squared b squared - (-6a squared b squared): Find the difference of the given terms:
-15a squared b squared - (-6a squared b squared)
Click here to see answer by stanbon(18788)

Question 156178: I'm not sure if this is the right section, but here it goes. It's been a long time since I have seen these problems and I am trying to work with my daughter on her homework. The problem is . I remember the order in which to solve issues, but not when to solve the in the equation. : I'm not sure if this is the right section, but here it goes. It's been a long time since I have seen these problems and I am trying to work with my daughter on her homework. The problem is . I remember the order in which to solve issues, but not when to solve the in the equation.
Click here to see answer by Alan3354(1218)

Question 155809: Find the error, then correct it. After driving 50 miles an hour for n hours the distance traveled was 50 n miles.: Find the error, then correct it. After driving 50 miles an hour for n hours the distance traveled was 50 n miles.
Click here to see answer by jojo14344(832)

Question 154903: -6.4-(-10.8): -6.4-(-10.8)
Click here to see answer by stanbon(18788)

Question 154851: jocelyn wants to estimate the cost per ounce of a 9.8 ounce jar of gravy that costs $2.75.
what would be a good estimate?
explain how you make thsi estimate.: jocelyn wants to estimate the cost per ounce of a 9.8 ounce jar of gravy that costs $2.75.
what would be a good estimate?
explain how you make thsi estimate.
Click here to see answer by stanbon(18788)

Question 154234: If "a" is a negative number find
/a/+a+/-2a/+/-a/: If "a" is a negative number find
/a/+a+/-2a/+/-a/
Click here to see answer by josmiceli(2024)

Question 73457: I am trying to go back to college after 18 years. I am struggling with math. Would you please show how this problem is worked? Solve and write the solution as an interval. 2-x: I am trying to go back to college after 18 years. I am struggling with math. Would you please show how this problem is worked? Solve and write the solution as an interval. 2-x
Click here to see answer by Alan3354(1218)

Question 153437This question is from textbook Algebra 1
: Insert grouping symbols in the expression 2*3^3+4 to produce the indicated values: 4374 & 279,936. We figured out two of the other ones, but dont know what to do with these two.This question is from textbook Algebra 1
: Insert grouping symbols in the expression 2*3^3+4 to produce the indicated values: 4374 & 279,936. We figured out two of the other ones, but dont know what to do with these two.
Click here to see answer by Edwin McCravy(2043)

Question 153221: what is the perimeter of a rectangle with length of 7 and width of w?: what is the perimeter of a rectangle with length of 7 and width of w?
Click here to see answer by Alan3354(1218)

Question 152500: (2x3 - x2 + 3x -1)/(x + 2): (2x3 - x2 + 3x -1)/(x + 2)
Click here to see answer by jim_thompson5910(9217)

Question 151640: i need help with identifying and extending patters: i need help with identifying and extending patters
Click here to see answer by jim_thompson5910(9217)

Question 142681: why it is necessary to reverse the inequality symbol when multiplying both sides of an inequality?
what are the basic steps involved in problem-solving and what is the importance of following these problem solving steps when presented with a problem?: why it is necessary to reverse the inequality symbol when multiplying both sides of an inequality?
what are the basic steps involved in problem-solving and what is the importance of following these problem solving steps when presented with a problem?
Click here to see answer by mangopeeler07(442)

Question 148675This question is from textbook Passport to algebra and geometry
: Please help with (((6y-3y+2=-16)))This question is from textbook Passport to algebra and geometry
: Please help with (((6y-3y+2=-16)))
Click here to see answer by stanbon(18788)

Question 148493: Divide and simplify:
y^2+7y+10/2y-4 divided by y^2-3y-10/y-2: Divide and simplify:
y^2+7y+10/2y-4 divided by y^2-3y-10/y-2
Click here to see answer by mangopeeler07(442)

Question 147356: order of operations.
(7-1+6): order of operations.
(7-1+6)
Click here to see answer by jim_thompson5910(9217)

Question 147226This question is from textbook INTERMEDIATE ALGEBRA
: Different-sized reantal trucks cost $19.99,$29.99,or $39.99 plus $0.10 per mile. Equations are for the total erntal cost,C, in dollars, for x miles driven.
(it says en Exerises 21-26, write the equations and tell whether the graphs would be parallel lines.)This question is from textbook INTERMEDIATE ALGEBRA
: Different-sized reantal trucks cost $19.99,$29.99,or $39.99 plus $0.10 per mile. Equations are for the total erntal cost,C, in dollars, for x miles driven.
(it says en Exerises 21-26, write the equations and tell whether the graphs would be parallel lines.)
Click here to see answer by nerdybill(1049)

Question 146374: I'm really not sure what to ask so I'll try and describe the problem. The problem is 54-6 divided by 2+6=? and the answers or A. 6, B. 24, C. 27 D. 30 E. 57. I couldn't find my divided by sign on my keyboard so I just wrote it out. I'm not really sure what type of problem it is a Numerical Skills/Prealgebra problem from a study guide I have.: I'm really not sure what to ask so I'll try and describe the problem. The problem is 54-6 divided by 2+6=? and the answers or A. 6, B. 24, C. 27 D. 30 E. 57. I couldn't find my divided by sign on my keyboard so I just wrote it out. I'm not really sure what type of problem it is a Numerical Skills/Prealgebra problem from a study guide I have.
Click here to see answer by stanbon(18788)

Question 145912: i am having trouble solving this problem 3 -4(6 -3)=
: i am having trouble solving this problem 3 -4(6 -3)=

Click here to see answer by jim_thompson5910(9217)

Question 145666: 5+4(2-6)-10+3=: 5+4(2-6)-10+3=
Click here to see answer by checkley77(3412)

Question 144982: I am having trouble with this Problem
X+8
________
X^2+4X-5
Determine the values of x where the expression is defined.: I am having trouble with this Problem
X+8
________
X^2+4X-5
Determine the values of x where the expression is defined.
Click here to see answer by vleith(1162)

Question 144697: Explain why the rules of multiplication hold:
-(-) = +
+(+)=+
-(+)=-
+(-)=-
: Explain why the rules of multiplication hold:
-(-) = +
+(+)=+
-(+)=-
+(-)=-

Click here to see answer by solver91311(1850)