Questions on Algebra: Equations answered by real tutors!

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Question 66779: suppose that the temp. outside is dropping at a constant rate. at noon the temp. is 58 degrees and it drops to 58 degrees at 5:00. how much did the temp. change each hour?
Click here to see answer by stanbon(57211)

Question 66654: 10x-0.62=9(x-0.95)
Click here to see answer by checkley71(8403)

Question 66787: The corner section of a football stadium has 15 seats in the first row and 40 rows in all. Each sucessive row contains 2 additional seats. Howmany total seats are in this section?
Click here to see answer by stanbon(57211)

Question 66795: a=2 b=5 c=-4 d=6
4b+5d-c/a
i can get 4.5+5.6- -4/2
=20+30-4/2
=50 2/1
Click here to see answer by Earlsdon(6287)

Question 66795: a=2 b=5 c=-4 d=6
4b+5d-c/a
i can get 4.5+5.6- -4/2
=20+30-4/2
=50 2/1
Click here to see answer by checkley71(8403)

Question 66791: Hi plz could you help me wiv this question..... factorise: (p+q)^2+5(p+q)
it would be a great help! thnk you! oh n the 2 out side the brackets is a squared sign thnx!
Click here to see answer by Earlsdon(6287)

Question 66796: THE SIMPLE INTEREST. I ON A PRINCIPAL OF P DOLLARS AT INTEREST RATE R FOR TIME T, IN YEARS, IS GIVEN BY I=PRT. FIND THE SIMPLE INTEREST ON A PRINCIPAL OF $6000 AT 3% FOR 2 YEARS (3%=0.03)
Click here to see answer by checkley71(8403)

Question 66797: i need help with this badly. i just dont get it.
Write an open sentence involving absolute value.
cant do the number line, but on the number line its x<-5 or x>-1
Click here to see answer by Nate(3500)

Question 66806: 4x+3y=1150
Click here to see answer by stanbon(57211)

Question 66808: Suppose that the temperature outside is dropping at a
constant rate. At noon, the temperature is 70 degrees and it drops to 58 degrees at 5:00 P.M.
How much did the temperature change each hour?
Click here to see answer by Poohbear272(22)

Question 66801: how do i solve this? 7(4w-3)
Click here to see answer by checkley71(8403)

Question 66836: Hi, I need help with the following:
1. Solve by using substitution method. Determine whether equation is independent, dependent or inconsistent.
x=y+3
3x-2y=4

This is what I have so far.. Was I even on the right track?
X=y+3
X=y+3-3
X= -3

2. Solve by substitution or addition, whichever is easier
2y-x=3
X=3y-5

3. Solve by using addition method.
X+ y=13
22x+36y=356

Click here to see answer by checkley71(8403)

Question 66846: Show that 7ac+14ab+28a=7a(c+2b+4). Use values for a,b,c, and d to justify your answer?
Click here to see answer by checkley71(8403)

Question 66850: 7(4W-3)-25W CAN YOU HELP ME SOLVE THIS?I have
7.4w-3-25
28-21-25 now i am lost
Click here to see answer by checkley71(8403)

Question 66906: one number exceeds another number by 6 when twice the smaller number is added to three times the smaller number,the result is 32.find the two numbers
Click here to see answer by ptaylor(2048)

Question 66898: Use the simple interest formula to find the principal if the
total interest earned was $150 and the rate of interest was 4% for 2 years.
Dollars=P Interest=I Rate of interest=r Time calculated in years=t. Simple interest formula is I=Prt.
Keeping this forumla in mind and the information provided it would seem that 150=P x 0.04 x 2, next step looks like 150=P x 0.08, to get P we will divide 150 by 0.08. This works out to be 1875. So the principal is $1875.
did i do this right?
Click here to see answer by ankor@dixie-net.com(15622)

Question 66946: what is (((13x3)-3)/3)?
Click here to see answer by cassie(1)

Question 66962: i dont want to know the answer i just want to know what i need to do to get the answer
Simplify:
1+2i
----
2-3i
Click here to see answer by ankor@dixie-net.com(15622)

Question 66968: how i can dou that?
Click here to see answer by stanbon(57211)

Question 66930: 30b=5
Click here to see answer by checkley71(8403)

Question 67012: 6x^2y^3 + 9x^2y^3
3x^2y^2
can you help me solve this
Click here to see answer by stanbon(57211)

Question 67018: suppose that the temperature outside is dropping at a constant rate. At noon, the temperature is 70 degrees F and it drops to 58 degrees F at 5:00p.m. How much did the temperature change each hour?
Click here to see answer by ankor@dixie-net.com(15622)

Question 67015: a to the 10 power divided by a to the 7 power
how do i solve this?
Click here to see answer by ptaylor(2048)

Question 67044: I have a question about a symbol. It's an addition sign over a subtraction sign. What does that mean??
~Thanks so much.
Click here to see answer by Earlsdon(6287)

Question 67060: I have a problem for ya
Solve for the value of x: (4x-35)/3 = 9(1-x)
Click here to see answer by Nate(3500)

Question 67099: 3
- = -42
7y
Click here to see answer by Petredish1(5)

Question 67114: The question is:
What is the circumference of a wheel if it turns 9 times and travels 50 feet?
It wants us to use 22/7? Totally lost! Help!
Thanks
Click here to see answer by josmiceli(9645)

Question 67196: Te ttal number of ornge football helmets ad blue football helmts is 44. If twice the numbe of blue fotball helmets exceeds the number of orange football helmets by 4, how many are there of each color?
Click here to see answer by bam878s(77)

Question 67252: (100P-4000)/100P = .3 P=?
Click here to see answer by funmath(2925)

Question 67154: 6(n-3)=4(n-2.1)
Click here to see answer by cassiroberts(11)

Question 67286: 1.The sum of two positive real numbers is 7. The sum of their squares is 26.1/2. Find the numbers.
2.The perimeter of this right-angled triangle is 60 ( the two perpendicular sides are x and y and the other side is 26).
a) Write down two equations in x and y.
b) Find the values of x and y, given that x>y.
3.The diagram shows two squares; the sum of their areas is 58 meter square. The sum of the lengths of their sides is 10 meter. Find the values of x and y, as shown : (the small square is with the x side and the big square is with y side. the diagram shows that x+y = 10).
4. Solve:
5x-2y=3
xsquare+ysquare-2xy=0
Click here to see answer by ankor@dixie-net.com(15622)

Question 67330: (3/2x-2)+(1/2)=2/x-1

Click here to see answer by stanbon(57211)

Question 67314: Hello to anyone who can help me and do thank you very much.I have four problem I need help with badly,the problem is solve the equation for x: 5(X-3)divided by 4=x+1,the next one is 3(x=12)divided by 5=x+2,the third problem is,solve for n, 2over3n+4=10-4over3n,and the last one is,if c=5over6 and d=1over4,evaluate:8cover-d thank you for whoever helps me because I can use it.
Click here to see answer by stanbon(57211)

Question 67337: 1/(x-4) - 5/(x+2)=6/(x^2-2x-8)
Click here to see answer by Earlsdon(6287)

Question 67337: 1/(x-4) - 5/(x+2)=6/(x^2-2x-8)
Click here to see answer by stanbon(57211)

Question 67357: Please help solving this rational equation:
2- (x-1)/(x+3)=(x-3)/(x-4)
Click here to see answer by algebrapro18(206)

Question 67430: (x^2-2x-15)(x-4)=0 solve by finding roots

Click here to see answer by ptaylor(2048)

Question 67469: Determine which ordered pairs are part of the solution set for each inequality?
Y > 3x,{(1,5),(-1,0),(5,1)}
If you could help me with this one I think i can get the others on my own.
Click here to see answer by vero(2)

Question 67461: 1/R=1/R1+1/R2
Solve for R.
Click here to see answer by ankor@dixie-net.com(15622)

Question 67507: Hi, I need help with the following equations: Thanks in advance!
1. 36 - 9y = 3y
2. -21 + 4p = 10
Click here to see answer by bam878s(77)

Question 67510: Solve the following equation for x.
(1/4) + (1/5) = (1/x)

Click here to see answer by bam878s(77)

Question 67510: Solve the following equation for x.
(1/4) + (1/5) = (1/x)

Click here to see answer by stanbon(57211)

Question 67523: the chapter I am on is equations with variables on both sides and I have a test so I really need to get all this done solidly thank you :)

problem:t+1=3t-5
Click here to see answer by checkley71(8403)

Question 67525: What steps do you take to solve r=p(220-a) for the variable "a"?
Click here to see answer by checkley71(8403)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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