Questions on Algebra: Equations answered by real tutors!

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Question 968973: How do you solve the liner equating 7x=3y+21

Click here to see answer by josgarithmetic(39616)

Question 969082: A cylinder has a volume of 714.35 cubic centimeters. The diameter of the cylinder is 10 cm. What is the height of the cylinder?
(Assume = 3.14)

Click here to see answer by Alan3354(69443)

Question 969123: how do i write an equation for Line p contains point (6,-5) and is perpendicular to line q. The equation for line q is y = 3x + 5.
Click here to see answer by stanbon(75887)

Question 968799: X^2-75=0
Click here to see answer by Fombitz(32388)

Question 968799: X^2-75=0
Click here to see answer by Alan3354(69443)

Question 969310: Give an equation for a rational function that has a slant asymptote of y=x.
Click here to see answer by solver91311(24713)

Question 969362: If 4 times a number is increased by 1/2 itself, the result is 144. What is the number
Click here to see answer by Boreal(15235)

Question 969361: Tommy Recieved a 96 and an 80 his past two algebra 2 exams. If all exams are equally weighted, what score must he obtain on his 3rd exam to achieve a grade average of 90
Click here to see answer by Boreal(15235)

Question 969415: What is the value of the x-coordinate in the solution of this system of equations?
5x + 2y= 12
X - 3y = -18
Click here to see answer by stanbon(75887)

Question 969437: Solve for u, where u is a real number.

If there is more than one solution, separate them with commas
Click here to see answer by rfer(16322)

Question 969469: 7m^0 when m=1.7
Click here to see answer by erica65404(394)

Question 969459: so this is the algebra problem of the week #12
the problem is as follows
A man has a bag of coins. He meets three people.The first one gets 1/2 the coins +2. The second get 1/2 the coins +2. The third gets 1/2 the coins +2. When the man returns home he has two coins in his bag. Write and solve an equation to determine how many he started with.
Click here to see answer by Boreal(15235)

Question 969578: x^2-2x+sqrt(x^2-2x-2)=4
Click here to see answer by josgarithmetic(39616)

Question 969610: According to Pricewaterhouse Cooupers, "Global State of Information System Security 2014," there were 3.4 million "detected and reported information security incidents" (cyberattacks, etc.) against computer networkds in the USA in 2009. In 2014, that number had risen to 42.8 million.
(a) Which of the following linear equations could be used to predict annual number (in millions) of detected and reported information security incidents "y" in a given year "x," where x=0 represents the year 2009? Explain/show work.
A. y=0.13x+3.4
B. y=0.13x+2009
C. y=7.88x+2009
D. y=7.88x+3.4
(b) Use the equation from part (a) to predict the number (in millions) of detected and reported information security incidents in the year 2020. Round answer to the nearest tenth of a million. Show work.
(c) Fill in the blanks to interpret the slope of the equation: The rate of change of detected and reported information security incidents against computer networks in the US with respect to time is _________ per ________. (Include units of measurement).
Click here to see answer by josgarithmetic(39616)

Question 969573: Given the cubic function f(x)=x^3, write the equation of this function moved 3 units to the left, reflected over the x-axis, stretched vertically by a factor of 7, and shifted 4 units up
Click here to see answer by josgarithmetic(39616)

Question 969651: I need help with this equation: (y)/(2y+2)+(2y-16)/(4x+4)=(y-3)/(y+1)
Thank you in advance!
Click here to see answer by josgarithmetic(39616)

Question 969538: 1-sinx/cosx=cosx/1+sinx
Click here to see answer by KMST(5328)

Question 969849: translate this sentence into an equation
39 is the product of gregs score and 3
use the variable g to represents gregs score

Click here to see answer by erica65404(394)

Question 969022:
Click here to see answer by EdenWolf(517)

Question 969982: Hello, I have a question on Fourier Series and would be very grateful for any help.
Ṽ(t) = 1/T [∫_(0 )^(T/4)〖2 dt+ ∫_(T/4)^T〖0 dt〗〗][∫_(0 )^(T/4)〖2 dt+ ∫_(T/4)^T〖0 dt〗〗]

Thanks a lot in advance.
Alex
Click here to see answer by Fombitz(32388)

Question 969981: Hello, I have a question on Fourier Series and would be very grateful for any help.
V (ϑ) = Ṽ5 < t < T/2
V (ϑ) = 0-5 < t < T

Thanks a lot in advance.
Alex
Click here to see answer by Fombitz(32388)

Question 970072: A plane flies 460 mph in calm air. Flying with the wind, the plane can travel 1560 miles in the same amount of time that it takes to travel 1200 miles flying against the wind. Find the rate of wind.
Click here to see answer by macston(5194)

Question 970067: Steve is 4 years older than Tim. Five years from now, the sum of their ages will be 28. How old are they now?
Click here to see answer by macston(5194)

Question 970153: in algebra can i have a example how to solve -5(2-w)=10
Click here to see answer by josh_jordan(263)

Question 970153: in algebra can i have a example how to solve -5(2-w)=10
Click here to see answer by ankor@dixie-net.com(22740)

Question 970213: x^2-2xy+y^2=0
Click here to see answer by satyareddy22(84)

Question 970148: f(x) = ^3√x + 3 find the function values
Click here to see answer by Fombitz(32388)

Question 970223: Find the equation for the parabola that has its vertex at the origin and the focal point is 296 units above the directrix.
Click here to see answer by AnlytcPhil(1806)

Question 970212: 5x^2-3xy-8y^2=0
Click here to see answer by Alan3354(69443)

Question 970225: Write the equation of a parabola whose directrix is y=9.75 and has a focus at (7,6.25).
Click here to see answer by josgarithmetic(39616)

Question 970004: Two rectangles have the same width. The length of one is 1 foot longer than the width. The length of the other is 2 feet longer than the width. The larger rectangle has 5 more square feet than the smaller. What is the width of the rectangles?

Click here to see answer by ankor@dixie-net.com(22740)

Question 970432: What is the equation of the line that is perpendicular to -x + y = 7 and passes through (-1, -1)?
a)-x + y = 2
b)-x � y = 2
c)x � y = 2
d)-x � y = 0
e)x + y = 0
Click here to see answer by rothauserc(4718)

Question 970416: which of the following is |8-6t|
a.10
b.2t√7
c.2√7
d.-10
Click here to see answer by Alan3354(69443)

Question 970441: P=3 When Q=12
write an equasion connectiong P and Q.
3 Marks
Click here to see answer by Alan3354(69443)

Question 970517: Hi. I am in 7th grade advanced math and I have questions about my homework but my teacher won't help me. My question is: 4x-9=3.5x-9. I was absent the day we learned these types of equations with variables on both sides. My teacher says I am supposed to remember these types of equations from last year, which would be 6th grade, but we started common core this year so this is all new to me. Also, I am supposed to know this because I am going to Algebra 1 next year. Sorry for the detailed response. Could you please help me? Thanks, Jillian
Click here to see answer by Alan3354(69443)

Question 970507: (y^0)^4
Click here to see answer by Alan3354(69443)

Question 970506: (x^2)^0
Click here to see answer by Alan3354(69443)

Question 970505: (2d^-3)^-2/d
Click here to see answer by MathLover1(20849)

Question 970613: I am getting confused to do this question please help me to solve this. Hoping for your cooperation.
1. Solve:-
a. y-1/y+1=2y-3/2y+3
b. 2/y-1+3/y+1=5/y
Click here to see answer by Theo(13342)

Question 970683: Rewrite the nth root of x^m
Click here to see answer by Fombitz(32388)

Question 970678: What is the solution to the equation?
3 times the fifth square root of ((x+2)^3) +3=27
Click here to see answer by Fombitz(32388)

Question 970678: What is the solution to the equation?
3 times the fifth square root of ((x+2)^3) +3=27
Click here to see answer by MathTherapy(10551)

Question 970689: y = -2x + 19
y = x + 7
Click here to see answer by stanbon(75887)

Question 970690: Simplify 3^1/2 times 3^1/2
Click here to see answer by Boreal(15235)

Question 970690: Simplify 3^1/2 times 3^1/2
Click here to see answer by stanbon(75887)

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7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 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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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, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045, 36046..36090, 36091..36135, 36136..36180, 36181..36225, 36226..36270, 36271..36315, 36316..36360, 36361..36405, 36406..36450, 36451..36495, 36496..36540, 36541..36585, 36586..36630, 36631..36675, 36676..36720, 36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 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