Wednesday

April 16, 2014

April 16, 2014

Number of results: 99

**mathhh**

So its A?
*Saturday, December 31, 2011 at 12:10pm by John*

**MATHHH**

^(x+1) my bad =]
*Sunday, December 13, 2009 at 10:06pm by Cyn*

**mathhh**

Yes.
*Wednesday, October 13, 2010 at 8:02pm by Ms. Sue*

**MATHHH**

Thanks a million!
*Monday, January 17, 2011 at 12:41pm by Chelsea*

**mathhh**

Yes.
*Monday, April 4, 2011 at 11:10am by Ms. Sue*

**mathhh**

Solve 4^x + 15(4)^-x = 8
*Wednesday, January 27, 2010 at 9:00am by Anonymous*

**mathhh**

Solve 4^x + 15(4)^-x = 8
*Wednesday, January 27, 2010 at 9:17am by Anonymous*

**mathhh**

helllppp wannnteddd
*Thursday, February 10, 2011 at 7:05pm by pavleen*

**mathhh**

im not sure
*Sunday, May 13, 2012 at 3:11pm by shab*

**mathhh**

what is 6*7=42 as an array
*Wednesday, November 6, 2013 at 6:38pm by hwyyyyyy*

**mathhh!**

(x-1)^2 + (x+2)^3 >= 0 hellppp?! how do i solveee?
*Thursday, August 13, 2009 at 1:13pm by chrissy*

**mathhh!**

no were not allowed to use calculators
*Thursday, August 13, 2009 at 1:13pm by chrissy*

**MATHHH**

Solve: (log2 8)^x - (log9 3)^x+1 = 0
*Sunday, December 13, 2009 at 10:06pm by Cyn*

**MATHHH**

I agree. Quidditch is right!!
*Sunday, December 13, 2009 at 10:06pm by Reiny*

**mathhh**

g(x)=(x^2-4)/(4x); g(n-3) how do you solve thiss?
*Friday, August 16, 2013 at 12:41pm by Anonnnn*

**mathhh**

g(x)=(x-4)(x+4)/4x g(n-3)=(n-7)(n+1)/(4n-12)
*Friday, August 16, 2013 at 12:41pm by bobpursley*

**mathhh again!!!!!**

2x 4 12 (2-x) --- / ---- + ---- X --- (x^2-4) (x^2-4x+4) (x^2-4) 3
*Tuesday, June 10, 2008 at 5:10pm by amy*

**mathhh again!!!!!**

Is this it? And what do you want to do with it? {[2x/(x^2-4)]/(4/x^2-4x+4)} + [12/(x^2-4)]*[(2-x)/3]
*Tuesday, June 10, 2008 at 5:10pm by DrBob222*

**Mathhh!!!**

I don't see any k in your expression, check your typing
*Monday, April 30, 2012 at 4:11pm by Reiny*

**mathhh**

I'd say an array with 6 rows of 7 items
*Wednesday, November 6, 2013 at 6:38pm by Steve*

**mathhh!**

Hmmmm. Can you graph it with a calc? You can see where it is positive.
*Thursday, August 13, 2009 at 1:13pm by bobpursley*

**mathhh**

what is the answer for 4x+27=3x+34
*Wednesday, October 13, 2010 at 8:02pm by berry*

**MATHHH**

The equation is actually 3^x^2 + 20 = (1/27)^3x
*Sunday, January 16, 2011 at 12:42pm by Alicia*

**mathhh**

average rate of change? What is the starting point?
*Sunday, May 13, 2012 at 3:11pm by bobpursley*

**MATHHH!!!! PLEASE HELP**

setup a t, r, and d table
*Wednesday, October 24, 2012 at 9:58pm by da cool kid*

**help mathhh!!!**

which one would represent the water with no current?
*Thursday, December 13, 2012 at 3:58pm by erin*

**mathhh!**

The last line should read: f(x)≥0 for x∈ [-5.4734...,+âˆž)
*Thursday, August 13, 2009 at 1:13pm by MathMate*

**math grade 10 mathhh**

OMGGG THANK YOU SOO MUCH!!!!!!!! :):):):):):)
*Wednesday, December 23, 2009 at 10:16pm by alyssa*

**mathhh**

If I were you I would go way out on a limb and pick A
*Saturday, December 31, 2011 at 12:10pm by Damon*

**help mathhh!!!**

come on. the water has a current. I said b was the speed of the boat.
*Thursday, December 13, 2012 at 3:58pm by Steve*

**Mathhh?**

Write the number for 2 hundred plus 5 tens 0 ones
*Wednesday, February 20, 2013 at 4:51pm by Jazzy*

**mathhh**

x y -1 1 0 4 1 7 2 10 3 5 i got the answer it 13 and 15 what duhh rule
*Thursday, February 10, 2011 at 7:05pm by pavleen*

**mathhh**

everything looks good until the last line. I believe 2h/h = 2, no?
*Friday, August 16, 2013 at 2:15pm by Steve*

**mathhh!**

I think it is positive for any x greater than x = -5.5 approximately. It has a minimum at x = -.88 but that above the x axis
*Thursday, August 13, 2009 at 1:13pm by Damon*

**MATHHH**

Sorry, did not read the question carefully enough. Go with MathMate's answer.
*Sunday, December 13, 2009 at 10:06pm by Reiny*

**mathhh**

ooh ohk so yu subract 3x from both sides right?
*Wednesday, October 13, 2010 at 8:02pm by berry*

**Mathhh!!!**

find the value of k such that when 2x^3 +9x^2+x-15 is divided by x+5, the remainder is 0.
*Monday, April 30, 2012 at 4:11pm by rania*

**mathhh**

I showed you how to do this kind of problem. Now it's your turn. I'll be glad to check your answer.
*Wednesday, October 13, 2010 at 8:02pm by Ms. Sue*

**MATHHH**

Thank you for the help, I'm really stuck on c. The x was made capital by mistake, it's actually supposed to be lower case.
*Sunday, January 16, 2011 at 12:42pm by Alicia*

**mathhh**

which two points of a trignometric function will always give an average rate of change of 0?
*Sunday, May 13, 2012 at 3:11pm by shab*

**Mathhh?**

You've been shown how to do similar problems. Not it's your turn. I'll be glad to check your answer.
*Wednesday, February 20, 2013 at 4:51pm by Ms. Sue*

**mathhh!**

no, but the directions above the question say to solve the inequality and write the solution in interval notation
*Thursday, August 13, 2009 at 1:13pm by needs help*

**mathhh**

Which property is illustrated by the equation (rs)t=r(st)? A) associative B)Communtative C)Distributive D)Identity Help me please
*Saturday, December 31, 2011 at 12:10pm by John*

**mathhh**

factor the expression below using the greatest common facror 12n^5 + 8n^3 +6n
*Monday, April 18, 2011 at 6:38pm by pableen*

**mathhh again!!!!!**

yess thats it .. it has to be expressed in simplest form - im sorry for the misunderstanding thank you very much for any help that you can give
*Tuesday, June 10, 2008 at 5:10pm by Anonymous*

**Mathhh**

Use substitution to solve the system of equations given below. 8x - 4y = 16 2x - y = 4
*Friday, October 25, 2013 at 11:32am by Anon*

**mathhh**

Associative Property: When three or more numbers are multiplied, the product is the same regardless of the grouping of the factors. For example (2 * 3) * 4 = 2 * (3 * 4)
*Saturday, December 31, 2011 at 12:10pm by Damon*

**mathhh ;**

Solve for x by factoring the first equation. Use the same procedure that I have tried to explain when answering your previous questions.
*Friday, October 24, 2008 at 4:32pm by drwls*

**MATHHH!!!! PLEASE HELP**

setup a table for both trains one at x other at x+12 total distance 174 time 1.5 hours
*Wednesday, October 24, 2012 at 9:58pm by Sanya *

**mathhh**

if its adding do yu subtract nd if its subtract do you add??
*Wednesday, October 13, 2010 at 8:02pm by berry*

**Mathhh/Triggg**

Determine sinx tanx-sinx=0 for 0≤ x < 360°.
*Tuesday, January 4, 2011 at 12:48am by Tabby*

**mathhh**

one number is 2 more than 3 times another . their sum is 22 . find the number 4,18
*Wednesday, August 25, 2010 at 4:20pm by anonymous*

**MATHHH**

Determine the exact value of x. a. 3^2x = 5(3^x) +36 b. (1/8)^x-3 = 2x16^2x+1 c. 3^x2 + 20 = (1/27)^3X
*Sunday, January 16, 2011 at 12:42pm by Alicia*

**mathhh**

fist no. -- x 2nd no. -- 3x+2 3x+2 + x = 22 4x = 20 x = 5 so one is 5, the other 17 Your numbers do not satisfy your condition.
*Wednesday, August 25, 2010 at 4:20pm by Reiny*

**MATHHH HELPPPP**

3b+7=-2 14+h/5=2 h/5=fraction m/8+4=16 m/8=fraction 3x-1=8 35=3+5x -3+m/3=12 m/3=fraction -x-4=-20 5=-z-3
*Tuesday, October 11, 2011 at 9:49pm by KATIE*

**mathhh**

You select 8 cards randomly from a deck of 52 cards. What is the probability that all of the cards selected are face cards (i.e. jacks, queens, or kings)
*Wednesday, February 15, 2012 at 10:43pm by help please*

**mathhh!**

My teacher said we are supossed to solve this using systems of equations: Let a, b, and c be real numbers such that a-7b+8c=4 and 8a+4b-c=7. Then a^2-b^2+c^2= ? can someone please help?! i don't know what method to use to solve this or where to start
*Sunday, September 13, 2009 at 7:46pm by chrissy*

**MATHHH**

Quidditch is right. I did not work with the revised version of the question, and in any case log93 should have been 1/2. Work with Quidditch's reponse.
*Sunday, December 13, 2009 at 10:06pm by MathMate*

**MatHHH**

4. Evaluate the following, give exact value when possible. a. sec(225) = 2.72 b. sin(-15) – 0.065 c. sin(75) = -0.39 Are these the correct answers? I feel like there should be an equation... I'm confused
*Wednesday, January 19, 2011 at 4:51pm by Chelsea*

**mathhh**

change bases to 2 2^2x + 15*2^(-2x)=2^3 2^(4X) +15=2^(3+2x) Which is going nowhere.... I will have to think on it.
*Wednesday, January 27, 2010 at 9:17am by bobpursley*

**Mathhh, HELP!**

55c^6 = 5*11*c^6 11c^9 = 11*c^9 LCD = 5*11*c^9 Do the others in like wise. LCD will have the highest power of any of the prime factors or variables.
*Tuesday, October 29, 2013 at 7:22pm by Steve*

**help mathhh!!!**

if the boat has speed b and the river has speed r, 2.3(b+r) = 26 3.7(b-r) = 26 b=9.2 r=2.1
*Thursday, December 13, 2012 at 3:58pm by Steve*

**MATHHH HELPPPP**

The only ones that could give you problems are the ones containing fractions, the others are trivial I will do the 2nd 14 + h/5 = 2 multiply each term by 5, which is the LCD 70 + h = 10 h = -60 do the other fractional ones the same way
*Tuesday, October 11, 2011 at 9:49pm by Reiny*

**mathhh**

Let 4^x = y. Then your equation can be rewritten y + 15/y = 8 or y^2 -8y +15 = 0 which factors to (y-5)(y-3) = 0 y = 5 or 3 If y = 4^x = 3, then x ln 4 = ln 3 x = ln 3/ln 4 = 0.7925 Now solve for the other root (when y=5) yourself.
*Wednesday, January 27, 2010 at 9:00am by drwls*

**mathhh**

two angles are complementry. one angle measures 50 degrees what is the measurement of the other angles 180-50=130 so it 130
*Thursday, August 26, 2010 at 1:27pm by anonymous1*

**mathhh**

Find f(x+h), f(x+h)-f(x), f(x+h)-f(x)/h, f(x)=2x help corecctt f(x+h)= 2(x+h) f(x+h)-f(x)= 2(x+h)-2x so itss 2h soooo f(x+h)-f(x)= 2h then 2h/h= h?
*Friday, August 16, 2013 at 2:15pm by Anonnnn*

**Mathhh, HELP!**

Find the LCD: a) (12/55c^6) (4/11c^9) b) (9/4c+12) (5c/5c+10) c) (9x/x^2-4x+4) (5x/x^2-5x+6) d) (7/x) (3/42-7x) (x/x^2-36)
*Tuesday, October 29, 2013 at 7:22pm by Trevor*

**mathhh again!!!!!**

You aren't following instructions very well. LOOK AT YOUR POST and you will see that you can't space it this way. Look back at your original post for my suggestion on how to post a problem of this kind. We can't help if we can't make heads or tails of the question.
*Tuesday, June 10, 2008 at 5:10pm by DrBob222*

**mathhh**

12!(52-8)!/(52!)(12-8)! check that. It should be 12/52 * 11/51* 10/50*9/49*....* 5!/45
*Wednesday, February 15, 2012 at 10:43pm by bobpursley*

**mathhh ;**

1. 4x^2-16=0 4x^2=16 [what do i do now?]
*Friday, October 24, 2008 at 4:32pm by margiee (: !*

**mathhh again!!!!!**

Since you agreed with DrBob's way of writing your problem, let's take it in parts The first term reduces to [2x/((x+2)(x-2))]*[(x-2)(x-2)/4 = x(x-2)/[2(x+2)] the second term [12/(x^2-4)]*[(2-x)/3] = 12/[(x-2)(x+2)]*(2-x)/3 = -4/(x+2) using a common denominator of 2(x+2) we get...
*Tuesday, June 10, 2008 at 5:10pm by Reiny*

**mathhh!**

A cubic has to have at least one real root. It starts negative and ends positive if the coefficient of x^3 is positive. If it has more than one, it has three. I believe this one has only one and the other two are complex.
*Thursday, August 13, 2009 at 1:13pm by Damon*

**MATHHH**

log2(8)=3 log9(3)=0.5 So, (3)^x = (0.5)^(x+1) ln of both sides (x)(ln(3) = (x+1)(ln(0.5) (ln(3) - ln(0.5))(x)= ln(0.5) calculate ln(3) and ln(0.5) solve for x
*Sunday, December 13, 2009 at 10:06pm by Quidditch*

**mathhh again!!!!!**

ok ill do it like this ... 2x over x squared - 4 divided by 4 over x squared - 4x + 4 plus 12 over x squared - 4 multiplied by 2-x over 3
*Tuesday, June 10, 2008 at 5:10pm by amy*

**mathhh!**

What you'd like to do is to solve the simultaneous equations a-7b+8c=4 8a+4b-c=7 for a and b in terms of c. Substitute the values of a and b in the expression a²+b²+c² and wait for the magic to happen. If you do your math correctly, magic will happen.
*Sunday, September 13, 2009 at 7:46pm by MathMate*

**Mathhh**

what is PSU's (penn state university)"annual scholarship" i have to fill out the yearly tuition & the room and board amount which all equals to $36,144. I need the annual scholarship amount but idk where to find that information...
*Monday, May 30, 2011 at 5:49pm by surfsupmel*

**MatHHH**

a. sec(225) = 1/cos(225) = -sqrt(2), 3rd QUAD. b. sin(-15) = sin(345) = -0.2588,4th QUAD. c. sin(75) = 0.9659,1st QUAD
*Wednesday, January 19, 2011 at 4:51pm by Henry*

**MATHHH**

d) i = .10/12 = .008333.. PV = 9000 = x(1.008333)^-1 + x(.008333)^-2 + ... + x(1.008333)^-60 e) 9000 = x[1 - 1.008333^-60]/.083333 9000 = x(47.0654126) x = 191.22 f) that's all yours, I don't have one of those.
*Monday, January 17, 2011 at 12:41pm by Reiny*

**MATHHH!!!! PLEASE HELP**

Monico needs to mix a 40% ethanol solution with a 60% ethanol solution to create 100 millileters of a 54% solution. How many millileters of each solution must Monico use?
*Tuesday, October 30, 2012 at 4:56pm by Anonymous*

**mathhh**

When you move a positive to the other side of the equation it becomes a negative, and vice versa. For instance, in your problem, you want to subtract 3x from both sides. You want to subtract 27 from both sides. 4x+27=3x+34
*Wednesday, October 13, 2010 at 8:02pm by Ms. Sue*

**mathhh!**

(x-1)^2 + (x+2)^3 >= 0 Use foil to simplify. x^2 -2x +1 + x^3 + 6x^2 + 12x + 8 >=0 (For any a and b, (a+b)^2 = a^2 + 2ab + b^2 and (a+b)^3 = a^3 + 3ab^2 + 3a^2b + b^3) Combine like terms. x^3 + 7x^2 + 10x + 9 >=0 However...I cannot find any rational roots from it. ...
*Thursday, August 13, 2009 at 1:13pm by Marth*

**MATHHH**

a) let 3^x = y so you have y^2 - 5y - 36=0 (y-9)(y+4) = 0 y = 9 or y = -4 3^x = 9 3^x = 3^2 x = 2 or 3^x = -4 , not possible b) the trick here is to see that all bases are powers of 2 1/8 = 2^-3 16 = 2^4 so (1/8)^(x-3) = 2x16^(2x+1) (2^-3)^(x-3) = 2(2^4)^(2x+1) 2^(-3x+9) = 2(2...
*Sunday, January 16, 2011 at 12:42pm by Reiny*

**Mathhh!!**

Sally deposited $3600 and the annual rate of interest is 6.5%. What is the interest amount for a 30-month period? I = prt. I = amt of interest p = principal r = rate (0.065 per year) t = time in years = 2.5 years I = 3600*0.065*2.5 = ??
*Saturday, March 31, 2007 at 10:18pm by Cindy*

**mathhh**

If the radius of this cylinder is doubled, its volume will be twice as much four times as much eight times as much is it four times as much?
*Monday, April 4, 2011 at 11:10am by danny*

**math grade 10 mathhh**

A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP, THANK YOUUUUUU!!!!!!!!!!!
*Wednesday, December 23, 2009 at 10:16pm by alyssa*

**MATHHH**

Note that log28 = 3 and log93 = 1/3 Substitute y=3^x, then y - 1/y +1 =0 which transforms to a quadratic equation for which y can be solved. Since a^x > 0 for a>0 and x∈ℝ, one of the solutions where y<0 has to be rejected. Continuing with the other solution...
*Sunday, December 13, 2009 at 10:06pm by MathMate*

**Mathhh**

2x - y = 4 Subtract 4 and add y to both sides of the above equation. y = 2x -4 8x - 4y = 16 Substitute 2x-4 for y in last equation and solve for x. Insert that value into the first equation and solve for y. Check by inserting both values into the second equation.
*Friday, October 25, 2013 at 11:32am by PsyDAG*

**MATHHH**

Isn't log28 = 3 ? so your equation becomes 3^x - 3^(x+1) = 0 3^x(1 - 3) = 0 -2(3^x) = 0 3^x = 0 no real numbers satisfies that equation. (3 raised to what number equals zero ?? try x = -100, then 3^-100 = 1.94 x 10^-48 , pretty small and close to zero, but not zero. x would ...
*Sunday, December 13, 2009 at 10:06pm by Reiny*

**MATHHH!!!! PLEASE HELP**

An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two trains traveling? ...
*Wednesday, October 24, 2012 at 9:58pm by awade*

**MATHHH!!!! PLEASE HELP**

check my reply in your previous posting of the same question http://www.jiskha.com/display.cgi?id=1351128127
*Wednesday, October 24, 2012 at 9:58pm by Reiny*

**Mathhh**

I doubt if there's a specific amount. Check out this site. http://www.psu.edu/studentaid/scholarships/pssch1a.shtml?reload You can also call or email the Office of Student Aid.
*Monday, May 30, 2011 at 5:49pm by Ms. Sue*

**mathhh**

Nope. http://www.mathsisfun.com/geometry/complementary-angles.html
*Thursday, August 26, 2010 at 1:27pm by Ms. Sue*

**MathHH**

I had given you the formula to use in http://www.jiskha.com/display.cgi?id=1295098022 I don't understand what you are doing in your post I gave you amount = payment [(1+i)^n - 1]/i , so .... = 100 (1.005^60 - 1)/.005 = 6977.00
*Sunday, January 16, 2011 at 12:44pm by Reiny*

**MATHHH**

Mike wants to buy a snowmobile. His parents decide to lend him $9 000 at 10%/a, compounded monthly, if he agrees to repay the amount by making equal monthly (at the end of the month) payments for five years. d. Write the series that represents the present value of the annuity...
*Monday, January 17, 2011 at 12:41pm by Michelle*

**help mathhh!!!**

A boat travels down the river in 2.3 hours. The return trip up river takes 3.7 hours. A one way trip down or up river is a distance of 26 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...
*Thursday, December 13, 2012 at 3:58pm by erin*

**MATHHH!!!! PLEASE HELP**

If there are x ml of 40%, then there are 100-x ml of 60%, since the total is 100 ml. So, consider the amount of ethanol. The volumes in each part must add up to the volume in the total. .40x + .60(100-x) = .54(100) x = 30 so, 30ml of 40%, 70ml of 60% check: .4*30 + .6*70 = 12+...
*Tuesday, October 30, 2012 at 4:56pm by Steve*

**MathHH**

Is this answer correct? Jeremy is in Grade 8. He has a paper route and wants to save for his college education. He determines that he has $100 per month to put into an account at 6%/a compounded monthly. How much will he have at the end of five years for his college education...
*Sunday, January 16, 2011 at 12:44pm by Alicia*

**Math**

Can someone explain to me.... when you are graphing number sets.... when do you use open/ closed cirles.... When do you use arrows?... What are intergers??? Thanks, ummm kbye<33=]]]] i dont like mathhh its kinda gayy can u stop... you are not helping... BYE! I'm not exactly...
*Wednesday, September 13, 2006 at 6:37pm by Capi*

**mathhh!**

Chrissy, could you verify if the second term is to the third power or is it just squared? They are completely different problems. I will assume the second term is still cubed. You probably mean you cannot use calculators to solve the equation directly? I hope you are allowed ...
*Thursday, August 13, 2009 at 1:13pm by MathMate*

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