View Profile: Jomo - Free Math Help Forum

Today, 07:21 PM

Jomo replied to a thread Solving thru combination: If 6a+6b=30 and 3a+2b=14 what is value of b? in Intermediate/Advanced Algebra

No, no! The problem asked you to solve for b. Since you know b=1 you are done. There is no need to solve for a.

10 replies | 155 view(s)

Today, 07:11 PM

Jomo replied to a thread How many positive two-digit integers are both multiple of 8 and divisible by 6? in Arithmetic

As Halls said, just look at multiples of 24. 24, 48, 72, 96 and 120. So the answer is 4.

5 replies | 61 view(s)

Today, 07:09 PM

Jomo replied to a thread How many positive two-digit integers are both multiple of 8 and divisible by 6? in Arithmetic

Stapel, how are you? This particular student is studying for her SAT test so there is really nothing to look at from (current) class notes.

5 replies | 61 view(s)

Today, 02:47 PM

Jomo replied to a thread Show that F(x, y, z) = cos(xyz) (yzi + xzj + xyk) is conservative in Calculus

yes

1 replies | 29 view(s)

Today, 11:22 AM

Jomo replied to a thread need course list (curriculum) in Advanced Math

It is very hard to answer such a question. What is in red above is unclear. You will know better if General Math is Calculus. You can look at the...

1 replies | 39 view(s)

Yesterday, 09:41 PM

Jomo started a thread Find the coefficients of the polynomial of degree 2017! in Math Odds & Ends

The polynomial p(x) is of degree 2017 and has non-negative integer coefficients which you don't know. If you input a value like x=x0, the...

0 replies | 33 view(s)

Yesterday, 09:37 PM

Jomo replied to a thread Denis Is Jealous in Math Odds & Ends

Gee thanks.

10 replies | 187 view(s)

Yesterday, 08:22 PM

Jomo started a thread Solve system of eqns: xz-2yt=3, xt+yz=1; Find x2+y2+z2+t2 (x,y,z,t integers) in Advanced Math

x, y, z and t are all integers satisfying xz-2yt = 3 xt + yz = 1 Find x2+y2+z2+t2 I tried squaring the equations but nothing seems to...

0 replies | 49 view(s)

Yesterday, 07:59 PM

Jomo replied to a thread What is the greatest four digit integers that has a factor of 5? in Arithmetic

You really should just know that the answer is 9995, but if you can't then realize that the largest 4 digit number is 9999. Then ask yourself if...

2 replies | 77 view(s)

Yesterday, 07:54 PM

Jomo replied to a thread X + y + z + w = 100 in Intermediate/Advanced Algebra

You can't find X, Y, Z or W given what you gave us. Since X is increased by 10, all you can say is that Y+Z+W is now 10 less.

4 replies | 66 view(s)

Yesterday, 07:51 PM

Jomo replied to a thread Functions algebra basics: f(x) = 3/x + 2 is definitely ed for all real value except: in Intermediate/Advanced Algebra

Set whatever you are dividing by equal to 0. Since you are dividing by x, you say x=0. Since you can NOT divide by 0,the answer will be x\neq0 or all...

4 replies | 57 view(s)

Yesterday, 07:45 PM

Jomo replied to a thread Two students took an exam. One of them achieved 9 points; his points were 75% of... in Arithmetic

So where are you stuck? What have you tried? It is hard to help you if we do not know what you need help with--is it how to start the problem or...

2 replies | 47 view(s)

04-18-2018, 07:40 PM

Jomo replied to a poll TI-84 plus help (factoring polynomials) in Calculator Questions

That is all you wanted - the answer. Understanding it doesn't matter? Good luck in your class.

17 replies | 173 view(s)

04-18-2018, 07:37 PM

Jomo replied to a thread Quadratic simultaneous equations: X squared * Y squared =5, Y-X=3 in Beginning Algebra

I like that method. Maybe there is hope for you(??)

11 replies | 228 view(s)

04-18-2018, 05:13 PM

Jomo replied to a poll TI-84 plus help (factoring polynomials) in Calculator Questions

So the problem does not say to use a calculator. I assume that you learned a few methods for factoring (not including using a calculator). What have...

17 replies | 173 view(s)

04-18-2018, 05:08 PM

Jomo replied to a thread Solving thru combination: If 6a+6b=30 and 3a+2b=14 what is value of b? in Intermediate/Advanced Algebra

I am not sure what you mean by So a=5-6\5b, but whatever you do mean it is wrong (sorry). The 1st step (actually maybe it is better to call it...

10 replies | 155 view(s)

04-18-2018, 04:57 PM

Jomo replied to a thread Picking numbers: expression is odd integer ("2(2)^2 + 1") in Intermediate/Advanced Algebra

1)Sum of 2 odds numbers are even 2)Sum of 2 even numbers are even **) sum of odd and even is odd 3)If you square different integers you will get...

8 replies | 169 view(s)

04-18-2018, 04:36 PM

Jomo replied to a thread Solving thru combination: If 6a+6b=30 and 3a+2b=14 what is value of b? in Intermediate/Advanced Algebra

It is just excellent that you tried. Now please show us your work so that we can show you where you went wrong and to also have an idea as to what...

10 replies | 155 view(s)

04-18-2018, 12:42 PM

Jomo replied to a thread Simple logarithm question: simplify log(10)^5/log(10)^2 as log(10)^3 in Intermediate/Advanced Algebra

Because it is wrong. I completely disagree with wolfamalpha as they rewrote the problem incorrectly. I maintain that those powers are for the 10s and...

7 replies | 125 view(s)

04-18-2018, 12:42 PM

Jomo replied to a thread Simple logarithm question: simplify log(10)^5/log(10)^2 as log(10)^3 in Intermediate/Advanced Algebra

Be careful, the powers are NOT for log10, but rather for just the 10. The answer should be 5/2.

7 replies | 125 view(s)

04-18-2018, 11:50 AM

Jomo replied to a thread Quadratic simultaneous equations: X squared * Y squared =5, Y-X=3 in Beginning Algebra

X2Y2 =5 and Y-X=3. Why not solve for one variable and plug it into the other equation? For us to help you, you need to show us where you are stuck,...

11 replies | 228 view(s)

04-18-2018, 11:46 AM

Jomo replied to a thread Simple logarithm question: simplify log(10)^5/log(10)^2 as log(10)^3 in Intermediate/Advanced Algebra

If you had (log(10))5/(log(10))2, then it would simplify to (log(10))3 .For the record, my equation reduces to 15/12 =13=1 What you have...

7 replies | 125 view(s)

04-18-2018, 11:19 AM

Jomo replied to a thread Help with area between polar curves: √2 sin2θ = 1 in Calculus

When you square a product you just don't square one factor, you square both. Think about it, how do you know which factor to square? In particular...

5 replies | 113 view(s)

04-18-2018, 10:48 AM

Jomo replied to a thread Find for X for m(RXM)=x+81, m(RXT)=2x+32 (Geometry Question) in Beginning Algebra

x is a place holder for a number, so the answer can not be -x. You know that 2x+72 = x+81. So replace x with 5. Then 2*5 + 72 =82 while 5+81 = 86....

6 replies | 124 view(s)

04-17-2018, 07:34 PM

Jomo replied to a thread Polar Coordinates: Writing x^2+y^2+5x=0, x^2(x^2+y^2)=7y^2 as Values of R in Geometry and Trig

Interesting problem. Exactly do you need help with? What have you tried?

6 replies | 165 view(s)

04-17-2018, 07:05 PM

Jomo replied to a thread If a,b,c in (0,+infty), abc=1, prove a/(2+bc)+b/(2+ac)+c/(2+ab)>=1 in Beginning Algebra

;)

14 replies | 346 view(s)

04-17-2018, 07:01 PM

Jomo replied to a thread Find for X for m(RXM)=x+81, m(RXT)=2x+32 (Geometry Question) in Beginning Algebra

Well on one hand m<RXM = 2x+32 +40 or 2x+72. On the other hand, it equals x+81. So 2x+72 = x+81. This says that 2 times some unknown number plus 72...

6 replies | 124 view(s)

04-17-2018, 06:40 PM

Jomo replied to a thread Picking numbers: expression is odd integer ("2(2)^2 + 1") in Intermediate/Advanced Algebra

Just read 2(2)2 and do NOT worry about order of operations. 2(2)2 is read as 2 times 2squared or 2 times 2 to the 2nd power. The times symbol...

8 replies | 169 view(s)

04-17-2018, 12:24 AM

Jomo replied to a thread If a,b,c in (0,+infty), abc=1, prove a/(2+bc)+b/(2+ac)+c/(2+ab)>=1 in Beginning Algebra

JeffM, thanks for the reply. I see how the OP got to the 2nd line, I just have a problem believing that he got there on his own given that he does...

14 replies | 346 view(s)

04-16-2018, 08:23 PM

Jomo replied to a thread If a,b,c in (0,+infty), abc=1, prove a/(2+bc)+b/(2+ac)+c/(2+ab)>=1 in Beginning Algebra

Actually I find it hard to believe that you were able to get to where you are but do not know how to continue. Can you explain what you did to get to...

14 replies | 346 view(s)

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