Algebra/Expert Profile

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Recent Answers from Bobby Soltani

2012-01-05 7th grade algebra:

The area of a circle is pi times its radius squared, or A = pi*(r)^2.  The radius of a circle is one half of the length of its diameter, or r = (1/2)*d.  Solving the first equation for r, we get    r^2

2009-12-03 algebra:

Hi Brittanie,    You can solve systems of equations having fractions in the same way as ones that have whole numbers.  For example, you can write the two equations as:    (1/3)X + (1/2)Y = -4    (3/3)X

2009-10-11 algebra trouble with a seemingly easy question!!:

Hi Saaketh,    SQRT(2x+7) - x = 2    add x to both sides    SQRT(2x+7) = x+2    Square both sides    2x + 7 = x^2 + 4x + 4     subtract (2x+7) from both sides    0 = x^2 + 2x - 3    factor the right side

2009-10-10 algebra:

Hi Sridhar,    The Greatest Common Divisor is the largest integer or common divisor that divides 2 or more integers. The product of all prime factors common to both sets of prime factorizations of the

2009-10-09 ALgebra:

Hi Catinna,    One way we can find the slope of an equation is to arrange the equation in slope-intercept form:    y = mx + b    This is called the slope-intercept form because "m" is the slope and "b"