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

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 Algebra: Operations with Signed Numbers Solvers Lessons Answers archive Quiz In Depth

 Question 479522: Evaluate 7[3^2 - 2(1 + 2)] ÷ 7 + 5^2 Click here to see answer by stanbon(57966)

 Question 479743: what is 1/25 as a percent and how did you get it? Thanks Click here to see answer by stanbon(57966)
 Question 479743: what is 1/25 as a percent and how did you get it? Thanks Click here to see answer by Alan3354(31518)

 Question 479907: I am helping my daughter with her 6th grade algebra then a number in () next to a number with no direction sign like x or + or - what do you do with it. for example 4(7+3)or 10+(2)(5) Click here to see answer by tinbar(128)

 Question 485686: a certain number is multiplied by 4 and the product is divided by 3. if the result is 20 . what is the number? Click here to see answer by deborabr(181)

 Question 478727: perform the indicated operation and,if possible simplify 32/45 / 48/35= 55/86 - 27/86= 5/11 + 1/4= Click here to see answer by stfuenaira(10)

 Question 349954: Problem: Hiking up a mountain, you notice that the air temperature drops 10 degrees celsius for every 1000 meters increase in elevation. Write a multiplication expression to represent the decrease in temperature if you hike up the mountain 3000 meters. Then evaluate the expression and explain its meaning. This is a problem for my sixth grader's math homework and my wife and I are completely stumped. Neither of us can remember how to relate the temperature to the elevation in an equation and the lesson in the math book stops short of this type of problem (this particular problem is like a brain teaser at the end of the assignment). Can you help? Click here to see answer by Vickiets(1)

 Question 488001: Please show me step by step on doing this math problem. (-8)to the 2nd exponent+ 42/[18-(6+5)]= Click here to see answer by Edwin McCravy(8999)

 Question 488912: I need help awnsering x+y2+3x+xy ? I dont get it . It say combine like terms. Click here to see answer by stanbon(57966)

 Question 491011: represent 100 degress ferenhit with a signed number Click here to see answer by Alan3354(31518)

 Question 493147: I need help figuring out what this symbol is: [ here's the equation 4[3(21-17)+3] so what is [ Click here to see answer by deborabr(181)

 Question 493621: Write a multiplication or division sentence to answer the question. The temperature dropped 4 degrees each hour for 3 hours. What was the total change in temperature? Click here to see answer by deborabr(181)

 Question 493928: Hello, My name is Nikki, i am in 7th grade, learning pre-algebra. I need help learning a concept. I don't know how to explain it, here are some of the problems, (im not asking you to do these...)1) 4 more than twice a number 2)The difference of 10 and a number 3) The quotient of a number and 11 ect. if you know what these are would you explain it to me? if not its fine, i understand. The assignment is due tomorrow 9/9/2011 it would be great if you could get it to me as soon as possible. Click here to see answer by richard1234(5390)
 Question 493928: Hello, My name is Nikki, i am in 7th grade, learning pre-algebra. I need help learning a concept. I don't know how to explain it, here are some of the problems, (im not asking you to do these...)1) 4 more than twice a number 2)The difference of 10 and a number 3) The quotient of a number and 11 ect. if you know what these are would you explain it to me? if not its fine, i understand. The assignment is due tomorrow 9/9/2011 it would be great if you could get it to me as soon as possible. Click here to see answer by chessace(471)

 Question 494128: Hello :) i have tryed this problem - 7[(18-6)-6 I did -7 [(18-6)-6 -> [(12)-6] -> 7 [6] ->42 is my answer .... in class i was getting these wrong can you help me please :) thank you Click here to see answer by rfer(12730)

 Question 494545: I need help fast. What is Order of Operation or(PEMDAS)? how do I solve these problems? -1(-3)^2, -1*3^2. Click here to see answer by rfer(12730)

 Question 495172: I have to create a expression that equals 100 when I use Order Of Operations. I have to use all 10 digits (0,1,2,3,4,5,6,7,8,9) only once, and they must all be used once. I need help making the expression, its way to hard for me. my mother can't even figure it out. please can you help me? Click here to see answer by bucky(2189)

 Question 497621: I am getting stuck and can not figure out what i am doing wrong the problem is (y-4) - (y+7) = 8y our teacher is teaching us distributing and with this answer i would just use 1 so i got y - 4 -y -7 + 8y then i combined like terms the y's cancel out so now i am left with -11+8y and this is where i get stuck Click here to see answer by bucky(2189)

 Question 498520: i really need this in 2 days top!!!!!!!!!! anyways i'm not sure what catgory this goes under but i will still tell you the question: the square root of -100 the square root of 16/81 the square root of 4/25 the square root of 121/144 the square root of 0.16 THANK YOU THANK YOU THANK YOU!!!!! LUV YOU ALL!!!!!!!! :) Click here to see answer by solver91311(17077)

 Question 496348: Attempting to assist my son with homework. topic is "order of operations". Here's the math problem......2+7^2-3^2/3^2-1x5=35. Here's how we did it.... 2+49-9/9-1x5=35 51-9/9-1x5=35 51-1-1x5=35 50-1x5=35 49x5=35???????? Click here to see answer by Flannery(124)

 Question 501640: I need to know how to do this problem 9+8*4+3 Click here to see answer by Flannery(124)