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

Algebra -> Algebra -> Expressions-with-variables -> Questions on Algebra: Expressions involving variables, substitution answered by real tutors! Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

Algebra: Expressions involving variables, substitution

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Expressions-with-variables (FREE)

Question 87497This question is from textbook Intermediate Algebra
: Can you please help me with these two problems I would appreciate it.
Solve each system by substitution, if possible. If a system is inconsistent or if the equations are dependent, so indicate.
2x-y=-21
4x+5y=7
and
Solve the system of equations using the addition (elimination) method.
-7x+y=8
2x-y=2
Thank you in advance I really appreciate it.This question is from textbook Intermediate Algebra

Click here to see answer by stanbon(26259)

Question 87567This question is from textbook Intermediate Algebra
: Write an equation that has the solutions x=4 and x=-2. This question is from textbook Intermediate Algebra

Click here to see answer by rapaljer(3620)

Question 87568This question is from textbook Intermediate Algebra
: The length of a rectangle is 26 inches more than its width. If the area of the rectangle is 855 square inches, what are the length and the width? This question is from textbook Intermediate Algebra

Click here to see answer by SandySharma(35)

Question 87763: Nikki paid Dalton $15.50 for a combination of 15 baseball and football cards. The baseball cards were $1.50 each, the football cards were $0.50 each. How much did Nikki spend on the baseball cards?
Click here to see answer by checkley75(3666)

Question 87821: This problem has been bothering me for a while now. I need help on how to solve it. It goes like this: If f(x)= 1-3x and g(x)= 1/ x^2 +1, find f(g(0)) and g(f(1))
Click here to see answer by longjonsilver(2297)

Question 87919: On september 11, 2003, the Minneapolis Star Tribune compared the price of Glad wrap to Press 'n Seal. A roll of Glad wrap sells for $2.99, A roll of Press n' Seal sells for $3.79 or 5 cents a squeare foot. Press's Seal for 10/3 times as much per square foot as Glad wrap. What is the price of Glad wrap per square foot?
Click here to see answer by stanbon(26259)

Question 88115: I need some help with this problem
Social Sience
in a town election, the winning candidate had 220 more votes than the loser. if 810 votes were cast in all, how many votes did each candidate receive?

Click here to see answer by rapaljer(3620)

Question 88114: I can sure use some help on this please.
Geometry
.
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88031: John buys stamps. Some are 33 cents and the rest are 20 cents. The total equals 4.50.
Click here to see answer by ankor@dixie-net.com(6691)

Question 88231: Hello,
I have to solve this equation: x/3 - 1/4 = 3x-8/12, and I'm not 100% sure what I'm supposed to do... I'm totally lost on how to solve this problem. Can someone please help?
Thank you very much in advance for your help!!

Click here to see answer by stanbon(26259)

Question 88392: Solve the formula for the area of a triangle A = (1/2) bh for height h.
Using the formula find h when A = 24 and b = 8
Click here to see answer by checkley75(3666)

Question 88418: I am having trouble understand how to do this equation, please help me. Thank you very much.

Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88596: how can i factor x^2+4x+4-y^2
Click here to see answer by bucky(1732)

Question 88660: 7 less than 4 times a number
Click here to see answer by checkley75(3666)

Question 88768: If Joy's age now is 3 times her age 14 years ago, how old is she now?
Click here to see answer by checkley75(3666)

Question 88848: simplify each expression for the following
6x +11x =
23ab - (-2ab) =
3x + (-7x) + -10x =
7(3m) - 18 + 2m =
43 - 6(-3e) - 5e =
Click here to see answer by praseenakos@yahoo.com(417)

Question 88848: simplify each expression for the following
6x +11x =
23ab - (-2ab) =
3x + (-7x) + -10x =
7(3m) - 18 + 2m =
43 - 6(-3e) - 5e =
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88847: solve the following if a = 7 and b = 3.
3ab + 6 =
12a divided by (2b) =
Click here to see answer by praseenakos@yahoo.com(417)

Question 88846: solve the following if x = 6 and y = 4.
2xy + xy =
2y + xy - 4x =
Click here to see answer by praseenakos@yahoo.com(417)

Question 88844:
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 88769: If doris lives to be 100, her age will be 8 less than 4 times her wedding-day age. How old was she when she was married?
Click here to see answer by bucky(1732)

Question 88965: A rectangle has sides of 5x-12 and 5x+12. What is the area of the rectangle? In side the rectangle two squares with sides of x and x are to be removed. What is the remaining area of the rectangle?
Click here to see answer by stanbon(26259)

Question 89000: Solve each system by using both the substitution and addition methods:
A. 4x-y=6
x-y=0
B. 5x+2y=1
x-3y=7
Click here to see answer by jim_thompson5910(13787)

Question 89014: Evaluate:
...2
-4
negitive 4 to the 2nd

Click here to see answer by jim_thompson5910(13787)

Question 89015: Evaulate:
(-2/3)2
negitive 2/3 to the 2nd
Click here to see answer by jim_thompson5910(13787)

Question 89016: Simplify the expression:
2[12-3(4+2)]
Click here to see answer by jim_thompson5910(13787)

Question 89020: Evaluate the following expression for a = 6, b = 3 and c = 4.
a ÷ b + 2c

Click here to see answer by jim_thompson5910(13787)

Question 89179This question is from textbook algebra
: I need to solve by quadratic formula
5x^2+x=3
please help, I am trying to complete a test.
This question is from textbook algebra

Click here to see answer by jim_thompson5910(13787)

Question 89404: solve the system of equation by substitution
4x - 6y = 9
5x -6y =1
Click here to see answer by jim_thompson5910(13787)

Question 89404: solve the system of equation by substitution
4x - 6y = 9
5x -6y =1
Click here to see answer by checkley75(3666)

Question 89474: Please help me solve this problem:
50,000 -10,000(P) = 25,000(P)
Thanks
Click here to see answer by stanbon(26259)

Question 89866This question is from textbook algebra
: Rewrite the middle term as the sum of two terms and then factor completely. 10x2 + 19x + 6
my options are;
a)(5x-2)(2x-3)
b)(10x + 2)(x + 3)
c)(5x + 1)(2x + 6)
d)(5x + 2)(2x + 3)
I am not even coming close can someone please helop.
This question is from textbook algebra

Click here to see answer by stanbon(26259)

Question 89882: Subtract: b+8/c - b-6/c
I appreciate your time. Thanks
Click here to see answer by stanbon(26259)

Question 89884: Solve: x/x^2-36+6/x-6=1/x+6
The truth: I am completely lost & have no clue where to start. I really need help & I appreciate it.
Click here to see answer by stanbon(26259)

Question 89881: Multiply: x-6 x x+7/x^2-36
I'm lost!!
Thank you very much for the help!!
Courtney
Click here to see answer by ankor@dixie-net.com(6691)

Question 90106: Solve the volume of a cylinder formula V=pi r2h for h
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 90241: 18. 15n + 1 - 4n
For the given expression:
I have to identify the terms,like terms,coefficients,and constant terms.
Then simplify the equation.
Can someone please help me?
Click here to see answer by jim_thompson5910(13787)

Question 90367: Could someone please help me with this problem?
Solve for the indicated variable:
y+1/x-2=2/3 (solve for y)
Thank you in advance!!!!
Click here to see answer by stanbon(26259)

Question 90478: a more than the number by x
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 90527: The question I have ben posed is to:
solve the system for
2x+3=12
x+1.5y=-1
I know this may be asy for some but not for me.
Thank you
nevrstndstil@yahoo.com
Click here to see answer by jim_thompson5910(13787)

Question 90539: Find the real number restrictions on x in the expression:
x^2/x^2-14x+49
Click here to see answer by jim_thompson5910(13787)

Question 90538: solve for y:
x=(3+y)^2
Click here to see answer by jim_thompson5910(13787)

Question 90587: Rewrite the middle term as the sum of two terms and then factor completely
15X^2-21x+6
Thank you
Click here to see answer by stanbon(26259)

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, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670