01/07/14

What does a "circle equation" mean?
For instance, (r+1)2 + (r-3)2=15 or whatever, I don't get how that works. (Granted, I haven't been taught it either, but now is the time I hope). Thank you. PS: I think r means radius but I don't... more
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01/07/14

how are you suppose to know when the question asks to multiply or divide
Areas of a circle
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01/07/14

How do i describe and correct the error?
|-13| - |13| = -13 - 13 = -26
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01/06/14

factorization
6t2 - 7t + 12
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01/06/14

factorization
444 - 664
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01/06/14

factorize: 1-j-2j2
1-j-2j2
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01/06/14

James belongs to a club. he pays $15 to join. James purchases tee-shirts for $30. If James total bill is $135, how many t-shirts did James buy?
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01/06/14

In the triangle above AC=BC which is true A. P=r B. P=q c. P=s, D. Q=t e. Q=s
Please help me solve this problem. I have trie but I'm confused ......
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01/06/14

Use the quadratic formula to find all solutions in the interval [0,2pi): tan^2x-6tanx+4=0
This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!
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01/06/14

Find all solutions in the interval [0,2pi): sin2x=cosx
This is for my trig class, thanks for the help! If you could, could you please show all your work? Thanks again!
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01/06/14

3 + -1x + -3x^2 + x^3 = 0
solve for x 
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01/06/14

why do you have to subtract on both sides of the equation when solving a algebra problem
for example x + 23 = 45 Subtract 23 from each side x + 23 - 23 = 45 - 23 im not sure how to do this at all and x=22
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01/06/14

How would you simplify 2/3-i?
I tried to multiply the 3-i on the top and bottom but then I get lost on what belongs on the bottom and on the top.    I thought I would have something like 6-2i/9 but that doesn't seem right.
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01/05/14

Find the value of cot ^-1(-1dividedby2)
I am not sure how to work solve this problem.
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01/05/14

How do you solve the system of equations using the inverse matrix: {5x-2y+16 and {x+3y=10
I tried to find the inverse but in all my multiplying, it ended up not being a inverse matrix and instead a random set of fractions in my matrix.
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01/05/14

$24,000. The car depreciatesthe formula V(t)=P(0.85)^t where t is the time in years ad P is the original pric Find the value of the car after 5 years
I am in high school and I was given word problems to solve. But the sad part is I have no idea how to do them. My teacher wasn't very thorough.
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01/05/14

math definition
  Is this an example of  y = a(x - h)^2 + k   for a coordinate of the vertex
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01/05/14

a farmer has 18 more horses than cows.there are 13 fewer cows and than sheep.there are 15 cows.how many more horses does the farmer have than sheep?
I tried adding and subyracting.
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01/05/14

how to complete a table using f(x) = ^2
I do not understand how to complete this table.  Would you show me how to get started.  thanks     f(x) = x^2                       x   =    0               + 1               ... more
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01/05/14

Verify: 1+cosx/sinx+sinx/1+cosx=2cscx
This is for my trig class, thanks for the help!
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01/05/14

Verify: cosusinv=1/2[sin(u+v)-sin(u-v)
This is for my trig class, thanks for the help!
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01/05/14

Use the double angle formulas to determine: A. cos120degrees and B. tan300degrees
This is for my trig class, thanks for the help!
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01/05/14

Write sin(sin^-1x-cos^-1x) as an algebraic expression in x.
This is for my trig class, thanks for the help!
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01/05/14

Verify tan(x+pi/4)= 1+tanx/1-tanx
This is for my trig class, thanks for the help!
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01/05/14

Simplify (sin42degrees)cos38degrees-(cos42degrees)sin38degrees
This is for my trig class, thanks for the help!
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