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

Tutors Answer Your Questions about Signed-numbers (FREE)

Question 1002823: Please help me solve this
2x+13=3
Click here to see answer by josmiceli(19441)

Question 1002823: Please help me solve this
2x+13=3
Click here to see answer by josgarithmetic(39616)

Question 1003381: Could you please tell me the answer to this problem and how to solve it. I am tutoring an 8th grade student and I am not good at algebra and don't know how to solve it myself, let alone explain it to the student.
5x + 7 = 3x - 21
Thank you in advance for your help.
Click here to see answer by josgarithmetic(39616)

Question 1010503: how do you add negative numbers
Click here to see answer by Theo(13342)

Question 1010503: how do you add negative numbers
Click here to see answer by It is costly(175)

Question 1011012: An office has a staff of 6 people. A certain project will take the regular staff 24 hours to complete. Assuming that all the workers will perform at this rate, How many additional workers must be employed to complete the job in 8 hours?
A) 18
B) 06
C) 12
D) 10
Click here to see answer by fractalier(6550)

Question 1011744: Let X be a four-digit positive integer such that the unit digit of X is prime and the product of all digits of X is also prime. How many such integers are possible?
(1) 4 (2) 8 (3) 12 (4) 24 (5) None of the above
Click here to see answer by Edwin McCravy(20054)

Question 1011950: Happy New Tutors,
I guess learning algebra does not stop,
Trying to perform the indicated operation simplify and show my work. Thanking you in advance. Betty
6i*8i
Click here to see answer by MathLover1(20849)

Question 1013796: √16 x 10^4 - 2 * 10^2
Click here to see answer by ikleyn(52776)

Question 1013801: √16 * 10^4 - 2 * 10^2
I would like work shown and some explanation on how to get the answer
Click here to see answer by ikleyn(52776)

Question 1013862: if D is -3/2 then what is -(-D)
Click here to see answer by Alan3354(69443)

Question 1015400: in tha product (x2-2) (1-3x+2x2) the sum of coeficients of x2 and x is
Click here to see answer by josgarithmetic(39616)

Question 1015482: -3(4 - x) = 5 - (x + 1)
Click here to see answer by macston(5194)

Question 1015623: 10x^2-9xy+2y^2=0, find the ratio x:y
THANK YOU
Click here to see answer by robertb(5830)

Question 1016104: using + - * average I should get 100 using the following numbers 7 8 7 7 8 3
Click here to see answer by Herdaysoji(25)

Question 1016483: -20=-4-6
Click here to see answer by FrankM(1040)

Question 1018103: (4*y^5)^2
Click here to see answer by Fombitz(32388)

Question 1020158: 22/7 is a aparmey number. . .
but py is a parimey symbel why?
Click here to see answer by Edwin McCravy(20054)

Question 1024509: How to multiplication of fractions from arithmetic to algebra?
C=?
Click here to see answer by Cromlix(4381)

Question 1024514: Please help me to solve this Arithmetic and development of Generalized or Algebra Rules equation:
(w+2)*^-2=
Click here to see answer by fractalier(6550)

Question 1024633: Please help me solve the following Linear Equations for the unknown:
2 + 𝑥 = 1
4𝑐 � 2 = 3 − 6𝑐

Click here to see answer by Cromlix(4381)

Question 1024632: Can you please solve the following Linear Equations for the unknown:
3𝑧 + 2 = 5𝑧 − 2
𝑑 � 3 = 2𝑑 + 6
Click here to see answer by Cromlix(4381)

Question 1025608: How much is 3 + (-6)
Click here to see answer by Timnewman(323)

Question 1025621: 3x-1=11
Click here to see answer by Timnewman(323)

Question 1029351: 2-2�2+2=?? Please help me
Click here to see answer by ikleyn(52776)

Question 1029972: I am disturbed by what I've been reading on websites that avow -1^2 = -1. This is completely absurd to me, as I would have sworn that a number's sign always travels with it when being raised with an exponent. Now, I have a BS in Engineering, and I've been a Computer Engineer for over 25 years and I can tell you that when it comes to computers, a number's sign ALWAYS travels with it, and any operation that is done acts on both that number and its sign.
This may be the only time I've ever encountered a situation where a computer calculation deviates from a mathematical principle. Try the calculation on any calculator, spreadsheet, or computer program and it will yield a different result than what I'm reading on your website (and other 'algebra' websites).
Is this a shortcoming in computer technology?
Furthermore, can you tell me where a "sign" (positive or negative) fits into the order of operator precedence? Because up until tonight, I always thought it occurred FIRST. Parentheses->Exponents->Multiplication->Division->Addition->Subtraction. According to 'modern algebra' am I to assume that it resides between Exponents and Multiplication now?
Thank you!
Darin
Click here to see answer by solver91311(24713)

Question 1031816: Hello, I have a question on this problem:::
Could you please show me step by step how to get the answer. Thank You !
Simplify.
5-(8-3*4^3)
A)189
B)-179
C)1725
D)-195
Click here to see answer by Alan3354(69443)

Question 1034628: Great
Click here to see answer by ikleyn(52776)

Question 1036425: Square root of x^2+square root of 8x+ square root of 15=x+15
THANK YOU
Click here to see answer by ikleyn(52776)

Question 1036968: state triangle and parallelogram law of vector addition

Click here to see answer by ikleyn(52776)

Question 1038369: (+5)�(-9)
Click here to see answer by stanbon(75887)

Question 1041386: if in the United State in 2007 the national debt was about $8,868,000,000,000 and the population was about 301,000,000, estimate to three significant digits each individual's share the national debt. Write your answer in scientific notation and in standard decimal form.

Click here to see answer by jorel555(1290)

Question 1041395: the number of units N of a finished product produced from the use of x units of labor and y units of capital for a particular Third world Countries is approximated by N= 10x^3/4 * y^1/4 estimate how many units of a finished product will be produced using 256 units of labor and 81 units of capital.
Click here to see answer by Boreal(15235)

Question 1041393: if the United State in 2007 the gross domestic product was about $14,074,000,000,000 and the population was about 31,000,000, estimate to three significant digits the GDP per person. Write the answer in scientific notation and in standard decimal form.

Click here to see answer by Alan3354(69443)

Question 1041392: if the United State in 2007 the gross domestic product was about $14,074,000,000,000 and the population was about 31,00,00, estimate to three significant digits the GDP per person. Write the answer in scientific notation and in standard decimal form.

Click here to see answer by Boreal(15235)

Question 1042863: A circular pipe is 30 cm ling. Its internal and external diameters are 3 cm and 4cm respectively.

If water flows through the pipe at a rate of 5cm/s into an empty rectangular tank, find the volume of water delivered in 20 seconds.
Click here to see answer by josgarithmetic(39616)

Question 1043142: -2c + b =
How can this be solved? Don't you need to be given the value of one of the variables or the answer to solve?
Click here to see answer by Alan3354(69443)

Question 1043191: Sum of two whole number is 45 and their difference is less than 10. The all possible number of pairs are?
Click here to see answer by ikleyn(52776)

Question 1044137: Use the gauss approach to find a formula for the sum of the even numbers from 2 to 2n 2+4+6+...2n
Click here to see answer by ikleyn(52776)

Question 1044221: Use gauss approach to find the sum of 2+4+6+...+100
Click here to see answer by Edwin McCravy(20054)

Question 1044499: Use the gauss approach to find a formula for the sum of the even numbers from 2 to 2n 2+4+6+...2n
Click here to see answer by solver91311(24713)

Question 1045287: Dear Teacher,
Would appreciate for your advise on below question -is difficult to understand, pls help to show steps.......thanks hendor
QA)
The older model of this new printer can only print at a fixed rate of 1080 pages per hour.If the new printer is allowed to print at maximum speed, and both the old and new printer are turned on at the same time, how long would it take for both printers, working together , to print a stack of 2752 pages?

QB)
The new printer's speed is now set to match that of the old printer to save power and another printer of the same printing speed is bought .If all three are turned on this time, how many pages can they print in one and a half hours?

Click here to see answer by josgarithmetic(39616)

Question 1045723: You can represent and odd integer with the expression 2n+1, where n is any integer. Write and solve an equation to find three consecutive odd integers that have a sum of 63.
Click here to see answer by Alan3354(69443)

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