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Quadratic_Equations/379465: A) Solve 5x^2=35
B) Find the x-intercepts of f(x)=5x^2-35
1 solutions

Answer 269492 by Fombitz(13828) About Me  on 2010-12-02 08:17:34 (Show Source):
You can put this solution on YOUR website!
A)5x%5E2=35
x%5E2=7
highlight%28x=0+%2B-+sqrt%287%29%29
.
.
.
B)5x%5E2-35=0
5x%5E2=35
Same solution as A).


Numeric_Fractions/379499: I have no idea how to solve this problem please help.
D=k/5-8m
1 solutions

Answer 269491 by Fombitz(13828) About Me  on 2010-12-02 08:16:18 (Show Source):
You can put this solution on YOUR website!
Solve for which variable, k or m??


Quadratic_Equations/379482: Give exact and approximate solutions to three decimal places.
x^2+7x-5=0
1 solutions

Answer 269490 by Fombitz(13828) About Me  on 2010-12-02 08:15:41 (Show Source):
You can put this solution on YOUR website!
x%5E2%2B7x-5=0
Use the quadratic formula,
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%28-7+%2B-+sqrt%28+7%5E2-4%2A1%2A%28-5%29+%29%29%2F%282%2A1%29+
x+=+%28-7+%2B-+sqrt%28+49%2B20+%29%29%2F%282%29+
highlight%28x+=+%28-7+%2B-+sqrt%2869+%29%29%2F2%29+
For the approximate values, use a calculator.


Quadratic_Equations/379471: Find the vertex, the line of symmetry, and the maximum or minimum value of f(x).
F(x)=-(x+2)^2-4
1 solutions

Answer 269489 by Fombitz(13828) About Me  on 2010-12-02 08:13:53 (Show Source):
You can put this solution on YOUR website!
The equation is already in vertex form, y=a%28x-h%29%5E2%2Bk.
Vertex : (-2,-4)
The vertex lies on the axis of symmetry x=-2.
Since a=-1%3C0, the value at the vertex is a maximum.
y%5Bmax%5D=-4
.
.
.


Quadratic_Equations/379480: Determine the nature of the solutions of the equation.
y^2=2/3y+3/8
1 solutions

Answer 269488 by Fombitz(13828) About Me  on 2010-12-02 08:11:32 (Show Source):
You can put this solution on YOUR website!
y%5E2=%282%2F3%29y%2B%283%2F8%29
y%5E2-%282%2F3%29y-%283%2F8%29=0
Use the discriminant,
D=b%5E2-4ac
D=%282%2F3%29%5E2-4%281%29%28-3%2F8%29
D=%284%2F9%29%2B3%2F2
D=8%2F18%2B27%2F18
D=35%2F18
Since D%3E0, there are two real and irrational roots.
.
.
.
graph%28300%2C300%2C-5%2C5%2C-5%2C5%2C0%2Cx%5E2-%282%2F3%29x-3%2F8%29


Polynomials-and-rational-expressions/379562: solve
(4y/y-3) -2 = 1/y-3
thanks
1 solutions

Answer 269487 by Fombitz(13828) About Me  on 2010-12-02 08:06:38 (Show Source):


Equations/379564: Hi, I'm wondering if anyone can help me?
my problem is: a=h(a+b)/2
I'm not sure if i should multiply by h or 2?...
please and thank you
1 solutions

Answer 269484 by Fombitz(13828) About Me  on 2010-12-02 08:04:25 (Show Source):
You can put this solution on YOUR website!
Which variable are you solving for??


Polynomials-and-rational-expressions/379281: steps to simplify completely -7xy^2/ 28x^5y
1 solutions

Answer 269433 by Fombitz(13828) About Me  on 2010-12-01 23:11:09 (Show Source):


Equations/379338: If $8000 is invested at 12% compounded quarterly how much is in the account after 20 yrs?
1 solutions

Answer 269432 by Fombitz(13828) About Me  on 2010-12-01 23:09:12 (Show Source):


Equations/379309: what would be the answer for p in the equation -15+4/5p=9
1 solutions

Answer 269425 by Fombitz(13828) About Me  on 2010-12-01 23:04:23 (Show Source):


Probability-and-statistics/379314: you roll a number cube from 1 to 6 P(1)
1 solutions

Answer 269423 by Fombitz(13828) About Me  on 2010-12-01 23:03:23 (Show Source):


Exponents/379312: x^2(x-2x^2+3x^3)
1 solutions

Answer 269422 by Fombitz(13828) About Me  on 2010-12-01 23:02:29 (Show Source):


logarithm/379300: How do I solve this? 3log( 2, (X-5)) = 7?
1 solutions

Answer 269420 by Fombitz(13828) About Me  on 2010-12-01 23:01:41 (Show Source):


expressions/379325: x - y - (y - x) - 4 and 3x + 3(y + 2) tell whether the system has no solution, exactly one solution, or infinitely solutions.
1 solutions

Answer 269419 by Fombitz(13828) About Me  on 2010-12-01 22:59:47 (Show Source):
You can put this solution on YOUR website!
You have two expressions but what you need is two equations.
Please re-post.


Polynomials-and-rational-expressions/379477: Can not figure this out, can anyone help??
State the degree of the following polynomial: -2x4y + xy – y

1 solutions

Answer 269417 by Fombitz(13828) About Me  on 2010-12-01 22:58:45 (Show Source):
You can put this solution on YOUR website!
This is an expression, not an equation.


Geometry_Word_Problems/379379: if the square painting has sides of length x, find an equation for the radius r of the circular painting?
1 solutions

Answer 269415 by Fombitz(13828) About Me  on 2010-12-01 22:57:35 (Show Source):
You can put this solution on YOUR website!
If the painting is a square, how can it have a radius??


Parallelograms/379485: is the sum of the measure of the angles of a parallelogram is 180 true or false
1 solutions

Answer 269414 by Fombitz(13828) About Me  on 2010-12-01 22:56:55 (Show Source):
You can put this solution on YOUR website!
False, 360 degrees.


Numeric_Fractions/379406: 7/10x<-4/9
1 solutions

Answer 269412 by Fombitz(13828) About Me  on 2010-12-01 22:56:25 (Show Source):


Quadratic_Equations/379391: How do you know if a quadratic equation will have one, two, or no solutions? How do you find a quadratic equation if you are only given the solution? Is it possible to have different quadratic equations with the same solution? Explain. Provide your classmate’s with one or two solutions with which they must create a quadratic equation.

1 solutions

Answer 269410 by Fombitz(13828) About Me  on 2010-12-01 22:55:23 (Show Source):
You can put this solution on YOUR website!
Use the discriminant.
D=b%5E2-4ac
If D%3E0, two real solutions.
If D=0, one real solutions.
If D%3C0, two complex solutions.
.
.
.
If the solutions are a and b, then
f%28x%29=%28x-a%29%28x-b%29
.
.
.
Yes, but they are only different by a constant multiplier.
f%28x%29=5%28x-2%29%28x-1%29
and
f%28x%29=12%28x-2%29%28x-1%29 both has x=1 and x=2 but only differ by the constant multiplier in front.
.
.
.


Quadratic_Equations/379483: Solve the formula for the given variable. Assume all variables represent non-negative numbers.
A=14s^2, solve for s.

1 solutions

Answer 269406 by Fombitz(13828) About Me  on 2010-12-01 22:51:48 (Show Source):


Graphs/379392: What is the formula or method of coming up with a line that is perpendicular to and equation and passes through a specific point...
ex: equation of a line that is perpendicular to 3x-4y=10 and passes through (-1,2)
1 solutions

Answer 269403 by Fombitz(13828) About Me  on 2010-12-01 22:51:11 (Show Source):
You can put this solution on YOUR website!
Find the slope of the line.
3x-4y=10
4y=3x-10
y=%283%2F4%29x-5%2F2
.
.
.
Perpendicular lines have slopes that are negative reciprocals,
m%5B1%5D%2Am%5B2%5D=-1
%283%2F4%29%2Am%5B2%5D=-1
m%5B2%5D=-4%2F3
Use the slope intercept form of a line,
y=-%284%2F3%29x%2Bb
Use the point (-1,2) to solve for b,
2=4%2F3%2Bb
b=6%2F3-4%2F3
b=2%2F3
.
.
highlight%28y=-%284%2F3%29x%2B2%2F3%29
.
.


Exponents/379393:
1 solutions

Answer 269401 by Fombitz(13828) About Me  on 2010-12-01 22:47:02 (Show Source):
You can put this solution on YOUR website!
Please re-post.


Exponents/379396: 2a+6k=6k+10

1 solutions

Answer 269400 by Fombitz(13828) About Me  on 2010-12-01 22:46:34 (Show Source):


Numeric_Fractions/379417: x-3/5=1/6
1 solutions

Answer 269398 by Fombitz(13828) About Me  on 2010-12-01 22:45:32 (Show Source):


test/379464: 12x to the 9th power over 4x to the 4th power.
1 solutions

Answer 269396 by Fombitz(13828) About Me  on 2010-12-01 22:44:32 (Show Source):


logarithm/379421: what is 2+log2 5 express as a single logarithm

1 solutions

Answer 269395 by Fombitz(13828) About Me  on 2010-12-01 22:43:27 (Show Source):


Equations/379475: how would I solve m^8/m^3
please and thank you
1 solutions

Answer 269393 by Fombitz(13828) About Me  on 2010-12-01 22:40:31 (Show Source):


Rational-functions/379438: Please help me solve this equation: 2+4z^1/2=0
1 solutions

Answer 269392 by Fombitz(13828) About Me  on 2010-12-01 22:39:44 (Show Source):


Equations/379472: how do i do this problem. please and thank you
(2.5 x 10^4) x (6 x 10^3)
1 solutions

Answer 269390 by Fombitz(13828) About Me  on 2010-12-01 22:38:04 (Show Source):


Graphs/379139: what is the graph of 3x-2y=6
and i need (y) by itself
1 solutions

Answer 269238 by Fombitz(13828) About Me  on 2010-12-01 16:37:23 (Show Source):


Inequalities/379079: use the function f(x)= -3(x-3)(x+3)(x-2) to find the x intercepts, the leading coefficient and then draw a sketch of the graph of f(x). thank you so much!
1 solutions

Answer 269236 by Fombitz(13828) About Me  on 2010-12-01 16:36:21 (Show Source):
You can put this solution on YOUR website!
The leading coefficient is -3.
The zeros are x=3, x=-3, and x=2.
.
.
.
graph%28300%2C300%2C-10%2C10%2C-100%2C100%2C0%2C-3%28x-3%29%28x%2B3%29%28x-2%29%29