# Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

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 Algebra: Expressions involving variables, substitution Solvers Lessons Answers archive Quiz In Depth

 Question 346947: Find three consecutive odd integers the sum of which is negative twenty-one. true or false 6 is a solution of x2 + 3 = 9 + 5x. Click here to see answer by stanbon(57967)

 Question 347005: Chad has a total of 5 people in his family. Sally is Chad's twin sister Chad's sister Hailey is 4 years older than Chad Chad's mother was 24 when Chad was born Chad's father is 3 years older than his mother 1. Write an expression for each family member's age as a function of Chad's age (x). Clearly label each expression. Show or explain all of your work even if you use mental math or a calculator. 2. The average age of the 5 family members is 22. Determine the age of Chad's sister Hailey. Show or explain all of your work even if you use mental math or a calculator. Click here to see answer by haileytucki(390)

 Question 346722: Evaluate the expression and write the result in the form a+bi. -4 - 9i/4-i the quotient is____ Click here to see answer by nyc_function(2733)

 Question 347195: Please help me solve 3x^4+13x^2-10=0. I believe I am supposed to use the substitution method, then the quadration formula. Thank you for your help. Click here to see answer by Fombitz(13828)

 Question 347341: f=g+ghm; solve for g? Click here to see answer by solver91311(17077)

 Question 347394: I'm supposed to write the algebraic expression in words. I'm not sure how to get this one done. It is : 28-w/3 I was trying: 28 kids want 3 pieces of pizza, how many pizza's (w) are needed? and: 28 kids want w pieces of pizza, are 3 enough? Those don't seem to work! My mom's not sure how to turn this itno a word problem either! Please help! Thanks Dev Click here to see answer by jim_thompson5910(28715)

 Question 347401: what does 32t when t =2 mean. I now know that p.7 when p=9 means 9 times 7 Click here to see answer by fractalier(2101)

 Question 347567: solve the system of equations using elimination or substitition x-2y+4z=-19 2x+y-3z=14 3x+y+2z=5 Click here to see answer by haileytucki(390)

 Question 347688: (7-42a)(3/7) Click here to see answer by jim_thompson5910(28715)

 Question 347689: 10x+3(1/3-x) Click here to see answer by jim_thompson5910(28715)

 Question 347721: 3[(2-3)^2 + (6 - 4)^2] I have not done this in quite a while and was needing some assistance. Can you please take a look at it and qive me some help. Thank you very much. Click here to see answer by jim_thompson5910(28715)

 Question 347709: Solve the following literal equation: Solve f= 1/r sub 1 + 1/r sub 2 for r sub 1 I do not understand these subs...Please help explain Click here to see answer by Fombitz(13828)

 Question 347792: Please help me solve the formula for the indicated variable and evaluate the written formula for the given values to the following: Volume of a cone: V=Pie r squared h/3 Solve for h. Find h when V=25.12cm to the third and r=2cm. Use 3.14 for pie. I am so totally lost. I would appreciate your help on this. Click here to see answer by stanbon(57967)

 Question 347787: Solve the following linear equation where y-y sub 1= m (x-x sub 1) for m.... Please help me understand the above problem. Click here to see answer by Fombitz(13828)

 Question 347875: can you please help me do this problem 10/2x+3 divided by 4/10x+5 thanks Click here to see answer by mananth(12270)

 Question 347960: how do you find the value of x in this problem 2x+3/4(4x+16)=7 ? Click here to see answer by stanbon(57967)

 Question 347873: can someone please help me i dont understand how to do this 1/x^2 - x/x^2+2x+1 -x/1 Click here to see answer by Alan3354(31522)

 Question 348040: I need help on this question...FIND THE WIDTH AND LENGTH OF EACH RECTANGLE. The width is one half the length. The perimeter is 54 cm. Click here to see answer by mananth(12270)

 Question 348108: It takes a computer 8 days to print all of personalized letters for a national sweepstakes. A new computer is purchased that can do the same job in 5 days. How long would it take to do the job with both computers working on it? Click here to see answer by stanbon(57967)

 Question 348096: Tracy, Stacy and Fred assembled a very large puzzle together in 40 hours. If Stacy worked twice as fast as Fred and Tracy worked just as fast as Stacy, how long would it have taken Fred to assemble the puzzle alone? Click here to see answer by stanbon(57967)

 Question 348043: haha sorry nevermind i figured it out...thanks for your time any pacience :) tis is a very good site and will probably be using it often Click here to see answer by Fombitz(13828)

 Question 348100: Click here to see answer by london maths tutor(243)