Questions on Algebra: Equations answered by real tutors!

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Question 120040:
Two cyclists, 79 mi apart, start riding towards each other at the same time. One cycles twice as fast as the other. If they meet 1 hr later, at what average speed is each cyclist traveling?
_____mi/hr(slower cyclist)
_____mi/hr(faster cyclist)

Click here to see answer by checkley71(8403)

Question 120063: 2(x-4)=3
Click here to see answer by jim_thompson5910(35256)

Question 120093: Write the scale without units.
1 cm : 1km
Any help with equation would be Greatly apreciated.No answers from Solver 311911,please:)
Click here to see answer by josmiceli(19441)

Question 120092: Write the scale without units.
1 mm : 92 cm
Any help with equation would be Greatly apreciated.No answers from Solver 311911,please:)
Click here to see answer by josmiceli(19441)

Question 120096: Hi! May I have some help with this equation?
Find all values of k that ensure that the given equation has exactly one solution.
8x2 + kx + 7 = 0
Click here to see answer by josmiceli(19441)

Question 120090: Hi! May I get help with this problem?
A wire 220 in. long is cut into two pieces. One piece is formed into a square and the other into a circle. If the two figures have the same area, what are the lengths of the two pieces of wire?
Click here to see answer by solver91311(24713)

Question 120114: could you please help me do the two equations that follow. I have tried to get them, but just can't. Thank you in advance for any help you can give.
5/7x-3=2, -6y+2=8
Click here to see answer by stanbon(75887)

Question 120081: 5x-5=2

Click here to see answer by jim_thompson5910(35256)

Question 120120: this is a Exam Review, i havent done these kind of problems since the beginning of the school year so i have a blind picture of how to do this problem.
Carlos and Maria drove a total of 258 miles in 5 hours. Carlos drove the first part of the trip and averaged 53 miles per hour. Maria drove the remainder of the trip and averaged 51 miles per hour. For appoximately how many hours did Maria drive? Round your answer to the nearest tenth if neccesary.
Thanks, I hope you reply soon :D
Click here to see answer by ptaylor(2198)

Question 120194: i need help on P divided by 5 and =3

Click here to see answer by jim_thompson5910(35256)

Question 120182: It says to write a problem that the equation could represent. Here is the problem.
one fourthx=7
Click here to see answer by checkley71(8403)

Question 120203: Can I have some help with this equation?

x^2-6/5x+9/25=0
Click here to see answer by solver91311(24713)

Question 120203: Can I have some help with this equation?

x^2-6/5x+9/25=0
Click here to see answer by checkley71(8403)

Question 120164:
3y = 15x - 12 how do i the equation as a fraction in y =..."form
Click here to see answer by checkley71(8403)

Question 120219: Solve for x: 3x^2+5x-7=x^2+8x+28
Click here to see answer by jim_thompson5910(35256)

Question 120208: Hi!...can I get some help with this problem?
Solve the equation for x. (If there is one solution with a multiplicity of two, enter it in both answer boxes.)
a^2x^2 - 12ax + 36 = 0
Click here to see answer by scott8148(6628)

Question 120211: A fishing traveler off the coast of Alaska was ordered by the U.S. Coast Guard to change course. They were to travel 6 miles west and then sail 12 miles south to miss a large iceberg before continuing on the original course. How many miles out of the way did the traveler travel?
Click here to see answer by ankor@dixie-net.com(22740)

Question 120291: Simplify
4(-1) 4th power
Click here to see answer by stanbon(75887)

Question 120290: Simplify
8(81 to the 0 power)
Click here to see answer by stanbon(75887)

Question 120289: Solve each system of equations. Check by substitution
3a + 4b = -12
4a - 5b = -16
Click here to see answer by MathLover1(20849)

Question 120287: Solve each system of equations. check by substitution
4m + n = 17
3m - 4n = 27
Click here to see answer by MathLover1(20849)

Question 120286: Solve each system of equations. Check by substitution
x - y = 3
x + y = -1
Click here to see answer by MathLover1(20849)

Question 120285: Solve each system of equations. Check by substitution
5x + 3t = 19
5x - 3t = 1

Click here to see answer by MathLover1(20849)

Question 119344: Suppose r>0 in the equation x^2 + px + r = 0.
a. the roots cannot be determined from the equation.
b. the equation has two real unequal roots.
c. the equation has one real root.
d. the roots must both be positive.
Click here to see answer by ATIF(1)

Question 120298: I have just started on equation substitutions. They are very confusing, and my entire 10th grade class is struggling. can you help me solve this substitution?
4x+y=-2 2x=-y
Click here to see answer by stanbon(75887)

Question 120293: Hey! Can I have some help with this equation?
A box with a square base and no top is to be made from a square piece of cardboard by cutting s = 11 in. squares from each corner and folding up the sides. The box is to hold 704 in3. How big a piece of cardboard is needed?

Click here to see answer by Edwin McCravy(20054)

Question 120308: If you replace the equal sign of an equation and put an inequality sign in its place, is there ever a time when the same value will be a solution to both the equation and inequality? If so, can you give an example?
Click here to see answer by jim_thompson5910(35256)

Question 120356: solve for x: 2(x-3)=1/2x
Click here to see answer by jim_thompson5910(35256)

Question 120366: If 3+2i is a solution for x^2+mx+n=0, where m and n are real numbers, what is the value of m?
Click here to see answer by jim_thompson5910(35256)

Question 120400: x/4+2/4= 7/2
Click here to see answer by jim_thompson5910(35256)

Question 120436: Hi, May I get some help with this equation?
Evaluate the expression and write the result in the form a + bi.
1/(9 + 2i) - 1/(2 + i)
Click here to see answer by jim_thompson5910(35256)

Question 120438: Hi! May I please get some help with this expression?
Evaluate the expression and write the result in the form a + bi.
(sqrt(-7) sqrt(-49)) / sqrt(-63)
Click here to see answer by jim_thompson5910(35256)

Question 120429: Hi! May I have some help with this equation?
Evaluate the expression and write the result in the form a + bi.
1/(4 - 7i)
Click here to see answer by jim_thompson5910(35256)

Question 120429: Hi! May I have some help with this equation?
Evaluate the expression and write the result in the form a + bi.
1/(4 - 7i)
Click here to see answer by bucky(2189)

Question 120458: May I have some help with this expression?
Find all solutions of the equation and express them in the form a + bi.
x^2 + 12x + 37 = 0
Click here to see answer by jim_thompson5910(35256)

Question 120459: May I have some help finishing this expression?
Evaluate the expression and write the result in the form a + bi.
i^402
Click here to see answer by jim_thompson5910(35256)

Question 120459: May I have some help finishing this expression?
Evaluate the expression and write the result in the form a + bi.
i^402
Click here to see answer by edjones(8007)

Question 120461: let me see if I have this correct?
7x-5+3x=6+x-10
7x+3x-5=x+6-10
10x-5=x-4
(10x-5)+(5-x)=(x-4)+(5-x)
(10x-5)+(-x+5)=(-x-4)+(-x+5)
So would -4 be the solution to the equation?
Thank you, Barb Neely
Click here to see answer by edjones(8007)

Question 120487: How would I solve for X in this equation:
1000/X=5.26

Click here to see answer by checkley71(8403)

Question 120519: A plane flies 720 mi against a steady 30-mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane�s speed in still air?
Click here to see answer by stanbon(75887)

Question 120542: here's my pre algebra problem
15x+24=8(10+3x)-2
im not sure how to do this.
And i need all the steps.
Click here to see answer by jim_thompson5910(35256)

Question 120565: Thank you in advance for helping me with this. I have been working on this problem since 3:00. The directions say to write an equation to solve the word problem. Here is the word problem...

The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there?

Thanks.
Click here to see answer by solver91311(24713)

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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39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580