Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 163175: 1/4 n + 5= 5 1/2
Please solve for n and show all work.
Thank you very much for your help!
Click here to see answer by checkley77(12569)

Question 163242: Find two whole numbers with a sum of 15 and a product of 54.
Click here to see answer by checkley77(12569)

Question 163242: Find two whole numbers with a sum of 15 and a product of 54.
Click here to see answer by joecbaseball(37)

Question 163227: -1/2 (4-6a)
Click here to see answer by checkley77(12569)

Question 163272: 4 - 8/3 q = 19
Click here to see answer by edjones(7569)

Question 163330: A terrorist needs to mix some 2% acid. She has on hand 50 mL of a 1% solution and some 4% solution. How much of the 4% solution should she mix with the 50 mL of 1% solution to obtain the desired 2% solution?
I have done this problem but I would like to make sure that it is right. The equation I made out of this word problem is this:
.04x+.01(50)=.02(x+50)
answer I got was x=25mL
Could you please let me know if I did this right? If I didn't please tell me what I am doing wrong?
Thanks soooooo much!!!!
Click here to see answer by KnightOwlTutor(293)

Question 163270: 2/3w=7
Click here to see answer by elima(1433)

Question 163329: Zack has $1.30 in pennies, nickels, and quarters. He has twice as many nickels as pennies and 7 less quarters than nickels. How many of each coin does Zack have?
This is another one of those word problems I am just having such a hard time trying to figure out. Please help!!!! Thanks!!!!!
Click here to see answer by ankor@dixie-net.com(15657)

Question 163361: 3)-1=3+4x
5)3b+7=-2
7)14+h/5=2
9)m/8+4=16
11)3x-1=8
13)35=3+5x
15)-3+m/3=12
Click here to see answer by checkley77(12569)

Question 163328: A flagpole casts a 5ft shadow at the same time a vertical pole 32ft high casts a 2ft long shadow. How tall is the flagpole?
I am really having a hard time with word problems. I am really stuck on this one and also another one, but this one is the worst. I would really like to understand how to make an equation out of this. If you could please explain it I would greatly appreciate it!!! Thanks soooooo much!!!!!
Click here to see answer by checkley77(12569)

Question 163371: 9jb+4=7b
Click here to see answer by checkley77(12569)

Question 163362: Please help me solve for x: x/6 +x/12 +x/7 +5 +x/2 +4 =x
I have tried multiplying the fractions by 48 (the LCD) but I got stuck and the answer I got didn't make sense. Please help me.
Click here to see answer by scott8148(6628)

Question 163407: Trying to help my daughter with Algebra, but it's been a long time since I had Algebra 1. If you can explain the following & refresh my memory please:
15x + 1 = y
Click here to see answer by checkley77(12569)

Question 163396: ten more than a number
Click here to see answer by checkley77(12569)

Question 163422: The Sum of two consecutive even integers is 118
a. Define a variable for the smaller integer.
b. What must you add to an even integer to get the next greater even integer?
c. Write an expression for the second integer.
d. Write and solve an equation to find the two even integers.
Click here to see answer by jojo14344(1512)

Question 163427: how do you solve the following
1/3x = 7/2
2x-6 over 4 = -7
-8 = 4/5k
5/6c - 2/3c = 1/3
-1/6d = -4
thanks for the help

Click here to see answer by checkley77(12569)

Question 163420: The length of a rectangular is one half its length. The perimeter of the rectangle is 54 cm. What are the width and length of the rectangle?
Click here to see answer by checkley77(12569)

Question 163484: You are buying flowers to hand out at a school dance. Roses cost $30 for a dozen but cost more if bought individually. With the money you have, you can buy 7 dozen and 4 singles roses, or 64 single roses. How much is one rose? How much money do you have?
Click here to see answer by KnightOwlTutor(293)

Question 163526:

Click here to see answer by checkley77(12569)

Question 163526:

Click here to see answer by ppie(1)

Question 163525: Please help with solving equation for r : q = rs/(r+s).
I tried multiplying by (r+s), but cannot figure out how to get both r's together.
Thanks
Click here to see answer by checkley77(12569)

Question 163524: Please help with solving equation for r : q = rs/(r+s).
I tried multiplying by (r+s), but cannot figure out how to get both r's together.
Thanks
Click here to see answer by checkley77(12569)

Question 163523: Please help with solving equation for r : q = rs/(r+s).
I tried multiplying by (r+s), but cannot figure out how to get both r's together.
Thanks
Click here to see answer by checkley77(12569)

Question 163573: Please check my work and answer:
9(2c+5)+3c=-75
18c + 45 + 3c = -75
21c + 45 = -75
-45 -45
21c = 120
21 21
c= -5.71
Click here to see answer by checkley77(12569)

Question 163562: a<1/4(3a+4) how do you work this
Click here to see answer by checkley77(12569)

Question 163612: 3. To estimate animal populations, biologists count the total number of animals in a small section of a habitat. The total population of animals is directly proportional to the size of the habitat (in acres) polled.
a. Write an equation using only one variable that could be used to solve for the constant of variation k.
b. A biologist counted the number of white tail deer in a 100 acre parcel of land in a nature preserve and found 12 deer. Find the constant of variation k.
c. If the entire nature preserve is 2,500 acres, then what is the total white tail deer population in the preserve? Describe how you arrived at your answer.

Click here to see answer by stanbon(57377)

Question 163587: if 4x+y=6 then what is (4x+y-3)
Click here to see answer by Fombitz(13828)

Question 163631: I have no idea how to approach this equation. It says to simplify the expression.
(2x^2-3x+1)(4)(3x+2)^3(3)+(3x+2)^4(4x-3)
Click here to see answer by gonzo(654)

Question 163646: if a pig weighs 20 lbs heavier then a 1/3 of its weight how much does the pig weigh
Click here to see answer by gonzo(654)

Question 163593: 1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C = 6,000/200-2(X)
a. What is the cost to remove 75% of the pollutant?
b. What is the cost to remove 90 % of the pollutant?
c. What is the cost to remove 99% of the pollutant?
d. For what value is this equation undefined?

Click here to see answer by checkley77(12569)

Question 163689: Julius sold five times as many compters as Sam sold last year.In total, they sold 78 computers.How many computers did julius sell?
Click here to see answer by checkley77(12569)

Question 163683: seven more than the quotient of a number and 5 is the same as 42
i need to write it as an expression and solve it
Click here to see answer by ankor@dixie-net.com(15657)

Question 163683: seven more than the quotient of a number and 5 is the same as 42
i need to write it as an expression and solve it
Click here to see answer by gonzo(654)

Question 163735: please help me with this problem:
5t/10=4
Click here to see answer by checkley77(12569)

Question 163734: please help me solve this equation:
3/4d=24
Click here to see answer by checkley77(12569)

Question 163740: 2x + 5 = -25

please show me the steps to solve this thank you!
Click here to see answer by jim_thompson5910(28595)

Question 163754: 3 over 4 + x over 2 = 12

please help me solve. thanks
Click here to see answer by jim_thompson5910(28595)

Question 163771: 43-k=-4
Click here to see answer by checkley77(12569)

Question 163768: l = a + (n + 1) d; for n

please help me solve. thank you!
Click here to see answer by checkley77(12569)

Question 163769: I do not understand how to solve literal equations. The question is: Solve the literal equation for x : ax=bx-c
Click here to see answer by scott8148(6628)

Question 163769: I do not understand how to solve literal equations. The question is: Solve the literal equation for x : ax=bx-c
Click here to see answer by jim_thompson5910(28595)

Question 163780: Please help me with the steps to solving this:
5(3x+5)=4x-8
Click here to see answer by jim_thompson5910(28595)

Question 163795: x + 1 over 5 - x+2 over 10 = x over 15

please help me. Thank you algebra.com!
Click here to see answer by jim_thompson5910(28595)

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, 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23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830