Questions on Algebra: Equations answered by real tutors!

Tutors Answer Your Questions about Equations (FREE)

Question 194126: What type of solutions do you get from a quadratic equation where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solutions of the equation. Thank You
Click here to see answer by Mathtut(3670)

Question 194125: Determine the type (real or complex) and number of the solutions of each of the following equations. Justify your answer.
x^2 + x + 4 = 0 Thank You

Click here to see answer by Mathtut(3670)

Question 194133: please "multiply and "simplify" this problem

5x^2(3x^2+2x-5)

thank you
Click here to see answer by Mathtut(3670)

Question 194179: Determine the number of solutions and classify the type of solutions for each of the following equations. Justify your answer.
4x2 + 16x + 16 = 0
Click here to see answer by RAY100(1637)

Question 194177: Determine the number of solutions and classify the type of solutions for each of the following equations. Justify your answer.
x2 � 4x - 77 = 0
Click here to see answer by RAY100(1637)

Question 194292: 27 7/3 over 27 8/3=
1/27
Did I figure this out right?
Click here to see answer by checkley77(12844)

Question 194291: 1/6d^5 + 1/7d^9=
6+7d4/42d^14
Did I answer correctly?
Click here to see answer by Earlsdon(6294)

Question 194320: What is the equation of a circle with center(-2,5) and radius 3?
Click here to see answer by user_dude2008(1862)

Question 194423: -2p+8=6-(5p+2)
Click here to see answer by jim_thompson5910(35256)

Question 194468: Pre Algebra Chapter 3 Resource Book.
McDougal Littell
Lesson 3.1 Practice B
for use with pages 119-124
1.6x -7=17;x=4 Having trouble solving probem. Don't understand
Lesson 3.2 Practice B
for use with pages 125-129
1. 10-3(x+2)=31 Do not have foundation down. Having trouble solving problem.
Click here to see answer by jim_thompson5910(35256)

Question 194538: Find the sum of all positive odd integers less than 300.
Click here to see answer by edjones(8007)

Question 194544: A garden's length is five times its width. Write an expression for the number of sections of 10 foot fence that are needed for this garden.
Click here to see answer by RAY100(1637)

Question 194495: Write an expression for the following (use x for the unknown number): 2 more than 3 times an unknown number is equal to one half of the difference between the unknown number and ten.
Click here to see answer by ejazali_syed(7)

Question 194634: you need to express the problem as an exponential function whose value is the percentage of the remaining thorium after x million years, and then use the function and the following two properties to find the age of meteorite in million years:
The level of thorium in a sample decreases by a factor of one-half every 2 million years. A meteorite is discovered to have only 8.6% of its original thorium remaining. How old is the meteorite? Thank you
Click here to see answer by stanbon(75887)

Question 194641: A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours?

Click here to see answer by stanbon(75887)

Question 194639: True or false: The function "f(x) = 4x" grows four times faster than the function "g(x) = x". Explain.
Click here to see answer by RAY100(1637)

Question 194407: Solve for X
1. X -2/ 3 under the X =1
2. X X+1= 8
__ - _____
X-2 X =X^2-2X
3. X^2=36
Click here to see answer by ankor@dixie-net.com(22740)

Question 194688: evaluate "three less than half of the number n equals sixteen"
Click here to see answer by checkley77(12844)

Question 194688: evaluate "three less than half of the number n equals sixteen"
Click here to see answer by solver91311(24713)

Question 194730: 1+3x=7x-7
Click here to see answer by RAY100(1637)

Question 194793: how do you find the latral surface?
Click here to see answer by solver91311(24713)

Question 194842: express the problem as an exponential function whose value is the number of cells after x divisions, and then use the function to determine the answer.
A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours? Thank You
Click here to see answer by checkley77(12844)

Question 194920: solve for y 2/y=6/10
Click here to see answer by Mathtut(3670)

Question 194931: True or false: The function "f(x) = 4x" grows four times faster than the function "g(x) = x". Explain.
Click here to see answer by Alan3354(69443)

Question 194965: x/4 + 11x/4 = x/20
Click here to see answer by jim_thompson5910(35256)

Question 194972: How would you solve problems like:
x^2+5=0
x^2-11=0
Why is there two solutions?
Thank you
Click here to see answer by Alan3354(69443)

Question 191060: solve.
3x/x^2-1=5/x
I worked it out to:
2(x-5)(x+1)
Is this correct?
Click here to see answer by Alan3354(69443)

Question 194970: How would you solve problems like:
x^2-25=0 x=....
x^2-49=0 x=....
Thank you
Click here to see answer by bsmath(21)

Question 194994: The quotient of a number and 7 is 63?
Click here to see answer by stanbon(75887)

Question 195047: regarding algebra factorising: question is 4X + 8 = 4(X + 2)
i was given this question and answer but was not told how to work it out, i understnad how to get 4(X) (4X times 1 equals 4 (X) but i cant see how + 2 is found.
do i have the right idea or am i missing something out.
thanks
Click here to see answer by RAY100(1637)

Question 195055: 3/4x-1/12x=7/12
Click here to see answer by checkley77(12844)

Question 195056: 3/4x-1/12x=7/12
Click here to see answer by checkley77(12844)

Question 195027: Hello, I'm reviewing for a final and need some help checking this problem:
Evaluate each when x=3, y=-1, z=1/3
xz+y/z^2
thanks!
Click here to see answer by Edwin McCravy(20054)

Question 195032: Hello, I'm reviewing for a final and need some help checking this problem:
Solve each equation:
n/3 - 2n/5 = -1
thanks!
Click here to see answer by RAY100(1637)

Question 195030: Hello, I'm reviewing for a final and need some help checking this problem:
Simplify each expression. Leave only positive exponents in your answers:
2xy^-3(3x^-1y^4)
thanks!
Click here to see answer by RAY100(1637)

Question 195029: Hello, I'm reviewing for a final and need some help checking this problem:
Simplify each expression. Leave only positive exponents in your answers:
(-4/3)^-2
thanks!
Click here to see answer by RAY100(1637)

Question 195031: Hello, I'm reviewing for a final and need some help checking this problem:
Simplify each expression. Leave only positive exponents in your answers:
(3a^-1b^2)^-1
thanks!
Click here to see answer by RAY100(1637)

Question 195057: - x/13 +2 + x/13
Click here to see answer by RAY100(1637)

Question 195129: Please help me solve this equation:
Click here to see answer by jim_thompson5910(35256)

Question 195182: plot a graph with � An exponential function
Click here to see answer by solver91311(24713)

Question 195170: Form each of the following
� A quadratic equation
Click here to see answer by bsmath(21)

Question 195175: Form each of the following:
A logarithmic function
Click here to see answer by user_dude2008(1862)

Question 195174: Form each of the following:
An exponential function
Click here to see answer by user_dude2008(1862)

Question 195173: Form each of the following
� A polynomial of three terms
Click here to see answer by user_dude2008(1862)

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