Questions on Algebra: Equations answered by real tutors!

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Algebra: Equations

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Question 14382: systms of linear equations an problem solving the substituition method
3s-4t=14
5s+t=8
Click here to see answer by elima(1433)

Question 14373: log (1 + cos x + i sin x)/(cos x – 1 – i sin x)
Click here to see answer by khwang(438)

Question 14446: please help me solve this equation 5x^2 + 33x -14 = 0 i know the answer is 0.4 but dont know how to show this or to work it out the proper way
Click here to see answer by Earlsdon(4898)

Question 14584: Three times the first of two numbers decreased by the second number equals 9. Twice the first number increased by the second number equals 11. Find the two numbers. I need a system of equations to solve the problem.
Click here to see answer by Earlsdon(4898)

Question 14600: hi can you please help me solve this. one of the other tutors helped me with this but i got confused with his/her answer.
it says substitute x= -4 and y= -15 to find the value of the expression.
-3 (4x - y)
thank you

Click here to see answer by longjonsilver(2297)

Question 14598: hi can you please help me solve this equation.
it says use the rule y= 3x cubed - 10 to complete the table. i know that one of your tutors already solved this for me but i accidently put squared instead of cubed and my computer wont let me write back to that tutor.
then it has
x y
2
1
0
10
5
y is left blank because i have to fill it out.
i have already tried some of these and for the answers i got
2/206
1/17
0/ -10
im not sure if they are right.
Click here to see answer by glabow(165)

Question 14682: 5b + 15
Click here to see answer by elima(1433)

Question 14744: Equations with variables
3/2y - y = 4 + 1/2y
Do not know where to begin. I believe I would start by simplifying first portion of problem. Would I subtract 3/2y from 1/1y? Clueless.
Click here to see answer by rahman(247)

Question 14730: negative three equals n over seven

Click here to see answer by Alwayscheerful(414)

Question 14687: What are the x- and y-intercepts for the following equation: 2x+3y=6. Tell how to find each intercept.
Click here to see answer by venugopalramana(3286)

Question 14846: value of 4 to the second power + 2/3
Click here to see answer by jb007mi6(53)

Question 14864: x^2-9x+20=
Click here to see answer by jb007mi6(53)

Question 14880: (f+5) + (-2) = 6
Click here to see answer by jb007mi6(53)

Question 14894: What is the answer to -1=4 + n
Click here to see answer by elima(1433)

Question 14896: -6y+15=3(y-1)
Click here to see answer by elima(1433)

Question 14916: Twice the greater of two consecutive odd intgers is 13 less than three times the lesser. Find the integers.
Click here to see answer by elima(1433)

Question 14946: 14 = 27 - x
Click here to see answer by Alwayscheerful(414)

Question 14354: Find an equation of the line (in either general form or slope intercept form) that contains the centers of the following two circles:
x^2+y^2-4x+6y+4 = 0 and x^2+y^2+6x+4y+9 = 0
Click here to see answer by venugopalramana(3286)

Question 14356: Find the equation of the verticle line that contains the point (4,-5). Express answer in general form or slope-intercept form.
Click here to see answer by venugopalramana(3286)

Question 15028: Find three consecutive integers such that twice the smallest is 12 more than the largest ?
Click here to see answer by bonster(299)

Question 14954: b=6
Click here to see answer by bonster(299)

Question 14795: what is the answer to 8x-5=7x+7
Click here to see answer by bonster(299)

Question 14729: solve each equation : k over negative five equals negative five
Click here to see answer by bonster(299)

Question 15092: Given C=1-A/a; solve for A and a
Click here to see answer by bam878s(76)

Question 15097: 1.-10y-11=-72
2.-2Y-12=-34
3.4Y-12=16
4. 7y=-63

Click here to see answer by rahman(247)

Question 15066: 4-Y=13
9y=36
Click here to see answer by rahman(247)

Question 15132: 19=-8+2
Click here to see answer by ShadowyLove(2)

Question 15191: can you please help me figure this one out?
2.4 b+ 5.6= -11.2
please show so i'll know how u did it. thank you for your help
Click here to see answer by elima(1433)

Question 15275: MR.SELL BOUGHT THREE DOGHNUTS AND A 44-OUNCE THERMAL CUP OF COFFE ONHIS WAY TO SCHOOL. IF THE COFFE COST WAS $1.95 AND THE TOTAL OF HIS PURCHASE [BEFOERE TAX] WAS $3.60, HOW MUCH DID EACH DOUGHNUT COST?
Click here to see answer by rapaljer(3619)

Question 15340: please help me with this...

5 (t- 0.4) + 6t =0
will you show me how you did it?
Click here to see answer by rahman(247)

Question 15339: please help me with this...
12p - 6.5p + 7 = -15

will you show me how you did it?
Click here to see answer by rahman(247)

Question 15338: please help me with this...
1.2c + 2.6c =4.56
will you show me how you did it?
Click here to see answer by LilSkittleMd(119)

Question 15337: please help me with this...
-0.5x + 4 + 2x = 9
will you show me how you did it?
Click here to see answer by LilSkittleMd(119)

Question 15326: please help me solve this.
2/3 (a-3)= -1/3
please show me how you do it..
Click here to see answer by LilSkittleMd(119)

Question 15327: please help me with this.
2/7n + n = 5/9
will you show me how you did it?
Click here to see answer by LilSkittleMd(119)

Question 15177: I have two equations. The answers for both X & Y are the same. I have tried to figure it out and have been unable to get the answer. Here are the equations.
2x + 3y = 33
x + 5y = 27
Click here to see answer by LilSkittleMd(119)

Question 15336: please help me with this...
0.9x + 2.3x = -6.4
will you show me how you did it?
Click here to see answer by LilSkittleMd(119)

Question 15193: How do you solve (w-3)-5(w+7)=10(w+3)-(7w+5)?
Click here to see answer by LilSkittleMd(119)

Question 15328: please help me with this.
8- w/10 =3/5
will you show me how you did it?
Click here to see answer by LilSkittleMd(119)

Question 15328: please help me with this.
8- w/10 =3/5
will you show me how you did it?
Click here to see answer by rapaljer(3619)

Question 15465: The problem i have is that i cannot figure out what number to use the addition or subtraction rule on. How do i know?
This is the equation:
4 + 3x - 6 = 3x + 2 - x
Please help if you are willing
Click here to see answer by jessicawhidden(3)

Question 15464: please help me with this?
0.4 (a+2) =2
will you explane it to me please?
Click here to see answer by pwac(251)

Question 15463: please help me with this?
4x + 2 = -28.4
will you explane it to me please?
Click here to see answer by pwac(251)

Question 15521: what is the answer to 8p=-8?
Click here to see answer by pwac(251)

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