Questions on Algebra: Equations answered by real tutors!

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Question 58016: 29. Which of the ordered pairs is a solution for the equation 2x – 5y = 10?
A) (0, 2)
B) (–5, 0)
C) (–5, –2)
D) (0, –2)
Thanks for your help!!!
Click here to see answer by checkley71(8403)

Question 58023: 42. Is –4 a solution to the equation 7x – 5 + 3x = 6 + x – 10
Thanks!!!!!!!!!!!
Click here to see answer by checkley71(8403)

Question 58023: 42. Is –4 a solution to the equation 7x – 5 + 3x = 6 + x – 10
Thanks!!!!!!!!!!!
Click here to see answer by rcmcc(152)

Question 58025: 44. One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
A) 5
B) 7
C) 17
D) 34
I really appreciate your help!!!!
Click here to see answer by checkley71(8403)

Question 58024: 43. Solve. 5x – 0.78 = 4(x – 0.09)
A) 0.56
B) 0.42
C) 0.21
D) 0.76
Thank you for your time!!!!
Click here to see answer by rcmcc(152)

Question 58018: 30. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.
A) y = –3x + 5
B) y = x + 5
C) y = 3x + 5
D) y = – x + 5
Thank you for your time!!!!
Click here to see answer by stanbon(57387)

Question 58061: for a fixed rate, fixed principal amount, fixed compunding cycle the return is an expomential function of time. Using formula A=P(1+r/n) nt
let R=8%
P=1
n=1
give the cordinates (+,A) for the points where +=0,1,2,3,4 round the A value to the tenth place.
Click here to see answer by stanbon(57387)

Question 58069: how do you get rid of negative variables
ex:
-9= -w/4-2

Click here to see answer by cyclones24(2)

Question 58159: How do you solve: 0=r+7-32??? Thankyou.
Click here to see answer by checkley71(8403)

Question 58196: can you please help me with this? solve for x? xsquare+x=72
Click here to see answer by stanbon(57387)

Question 58199: x+5=9
Click here to see answer by funmath(2925)

Question 58133: Can someone help me on this problem?
I need to solve the following problem and show the equation used for the solution:
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?
Thanks,
Lyn
Click here to see answer by stanbon(57387)

Question 58198: Solve by completing the square
x^2 + 2 = 2x

Click here to see answer by funmath(2925)

Question 58198: Solve by completing the square
x^2 + 2 = 2x

Click here to see answer by Earlsdon(6287)

Question 58121: 8-9k=21k-17
Click here to see answer by rcmcc(152)

Question 58267: this problem is not in the book
I need to solve for x
1/a+1/x=1/b
i know i have to subtract 1/a 1/x=1/b-1/a
but do not know what to do next?
Click here to see answer by Earlsdon(6287)

Question 58285: Can someone help me work out this problem?
I need to solve the following problem and show the equation used for the solution:
Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?
Thanks,
Ashley
Click here to see answer by rcmcc(152)

Question 58293: After a 20% increase the new price of a radio is $78. What was the original price of the radio?
Click here to see answer by checkley71(8403)

Question 58301: y= -x^2 - 3x - 2
Click here to see answer by tutorcecilia(2152)

Question 58318: -1 + 7y+6t/2y - 6y+6t/5y
Click here to see answer by faceoff57(82)

Question 58286: Can someone help me on this problem?
I need to solve the following problem and show the equation used for the solution:
A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb. of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?
Thanks,
Ashley
Click here to see answer by josmiceli(9697)

Question 58345: -8 + 12 * ? = -20

Click here to see answer by checkley71(8403)

Question 58348: help me solve these problems
-22=11-6a
-15=6p+15-10p
4e- 3e- 2e=1-9
Click here to see answer by checkley71(8403)

Question 58300: 2x^2 - x = 6

my work; 2x^2 = 4x

Click here to see answer by checkley71(8403)

Question 58421: Could someone be so kind in helping me with this problem?
I need to solve the following problem and show the equation used for the solution:
The length of a rectangle is 2 in. more than twice its width. If the perimeter of the rectangle is 34 in., find the dimensions of the rectangle.
Thank you,
Lisa
Click here to see answer by mszlmb(115)

Question 58456: SOLVE FOR A
B= (7/8)* (A-12)
Click here to see answer by funmath(2925)

Question 58472: hi, i would like to solve this problem step by step to find X1.
9X1 + 6(200-X1) = 1566
i know the answer that X1 = 122 but i don't know how to go over the step inorder to get that answer, can you help me =)
Click here to see answer by funmath(2925)

Question 58519: Determine if the lines are parallel, perpendicular or neither:
-4x + 3y = 4
-8x + 6y = 0
Click here to see answer by megaroo11891(5)

Question 58521: How do I solve this problem
2x+3y=6 ( for y)
Click here to see answer by faceoff57(82)

Question 58517: Given: f(x)= 3x - 9 Find:
a. f(0) Answer
b. f(2) Answer
c. f(-5) Answer
d. f (3z) Answer

Click here to see answer by checkley71(8403)

Question 58542: Solve for m:
2<-6(m + 1)< 10
Click here to see answer by funmath(2925)

Question 58540: Solve for y: y-2/5=y+1/3
Click here to see answer by funmath(2925)

Question 58480: 3(x+2y-2)-2(2x-2y+5)
Distribute 3 to x+2y-2 and distribute -2 to 2x-2y+5
3x+6y-6-4x+4y-10 (Combine like terms)
-x+10y-16
Click here to see answer by mifarnc(2)

Question 58615: Can be found on page 155. Please solve the equation 6(w-4)+18=30.
Click here to see answer by funmath(2925)

Question 58495: Can someone help me on this problem?
I f(x) = 5x - 1, I need to find the following:
f(2r)
Thanks,
Sher
Click here to see answer by checkley71(8403)

Question 58506: Solve for Y: y-2/5=y+1/3
Click here to see answer by checkley71(8403)

Question 58482: solve each inquality. state the solution set using interval notation and graph it.
problem is: a^2 + 2a greater and equal to 15
Click here to see answer by checkley71(8403)

Question 58507: Solve for m: 2<-6(m +1)<10
Click here to see answer by funmath(2925)

Question 58697: 4C+7/2 -5=6
Click here to see answer by funmath(2925)

Question 58702: Not getting this one.
Solve for k and graph on the number line.
5(k-3)-7k >_ 4(k-3)+9
k=
Click here to see answer by stanbon(57387)

Question 58688: 3. Solve for k and graph on the number line:
5(k-3)-7k(greater than or equal to) 4 (k-3)+9
clueless...help

Click here to see answer by stanbon(57387)

Question 58723: 34. b/3 = -3/4
Click here to see answer by funmath(2925)

Question 58772: To Whomever can assist, Thank You!
70)
3/4X = 14+ 1/2 (X-16)
Click here to see answer by funmath(2925)

Question 58778: 6=4x-x+9
Click here to see answer by funmath(2925)

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