Answers created by Sally

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• Question #06e24
  
• How do you evaluate `(3a -9i +2ai +6)/(a^2+9) + (3-9i+3i+9)/(9+a^2)`?
  
• How do you solve this system of equations `y= \frac { - 3} { 4} x , x - 4y = 32`?
  
• How do you simplify to tell whether the ratios `3/10, 9/20` form a proportion?
  
• How do you solve the inequality `2x – 5< –5` or `2x + 2>4`?
  
• How many fourths in 3 fourths? Write an expression to the problem.
  
• How do you solve and write the following in interval notation: `-1 < x <5`?
  
• How do you sketch the graph of `y=-(x+2)^2-2` and describe the transformation?
  
• How do you graph the lines using slope-intercept form `y = -5x`?
  
• `5x` is `12` more than `2x`. What is `x`?
  
• How do you multiply `u^ { - 1} v ^ { - 1} \cdot u v ^ { - 1} \cdot 3u ^ { 0}`?
  
• Question #181b6
  
• How do you write 1,400 in standard notation?
  
• What is the slope of the line passing through the following points: `(-5, 4) ,(7, -2)`?
  
• How do you solve for `x` in `2x - 3 < 11`?
  
• How do you solve `y-2x=3` and `2x-3y=21` using substitution?
  
• How do you graph using the intercepts for `x-y=11`?
  
• How do you solve `x(x-7)=0`?
  
• How do you change -1/2 into a decimal?
  
• How do you solve `-(3x + 2) = -19x + 62`?
  
• How do you graph `y=x^2+2`?
  
• How do you simplify `7xy (x^2 + y) - 11 xy^2 (x^2 -1)`?
  
• How do you translate to an algebraic expression x plus y squared?
  
• How do you translate to an algebraic expression 6 less than x cubed?
  
• How do you translate to an algebraic expression 6 less than x cubed?
  
• How do you multiply `4x(2x^2 + x)`?
  
• How do you find the intercepts for `x=5`?
  
• How do you integrate `ln(5x+3)`?
  
• How do you solve `18 ≤ 21 + x`?
  
• How do you multiply `4 * 4sqrt4`?
  
• How do you find the slope and y intercept and graph `2x+3y=-6`?
  
• How do you multiply `(3u^2 - n)^2`?
  
• How do you simplify `sqrt(512k^2)`??
  
• How do you solve `w^2 = 4` where w is a real number?
  
• Question #05482
  
• How do I graph polar coordinates?
  
• How do I find the direction angle of vector `<-2, -5>`?
  
• How do you write matrices on Socratic?
  
• Why do so many people contribute on Socratic?
  
• What is the end behavior of the graph `f(x)=x^5-2x^2+3`?
  
• How do you set up a proportion when you are given a scale?
  
• How do I find the derivative of the function `y = sin(tan(4x))`?
  
• How do you apply the pythagorean theorem in word problems?
  
• How can acceleration be negative?
  
• How do you find the x intercept for `y=2`?
  
• Question #4de19
  
• How do you write an equation of a line that is parallel to another?
  
• Why do sedimentary rocks have layers?
  
• What is the derivative of `sec(x^2)`?
  
• What is the derivative of `cot^2(x)`?
  
• How do you find the slope of `2x+8y=9`?
  
• How do you write a line parallel to `y=-3/5x+2` and goes through point (0,-2)?
  
• How do you write `11 2/3` into an improper fraction?
  
• What does a polar coordinate system look like?
  
• What is the rectangular form of `r = 3 \csc \theta`?
  
• How do you write `r = 4 \cos \theta` into rectangular form?
  
• What is the y intercept for the `y=2` graph?
  
• How do you identify the intercepts on a linear graph?
  
• How do you convert rectangular coordinates to polar coordinates?
  
• How do you simplify `1-(x+4)`?
  
• How would you create a `(x,y)` table for the equation `y=2x-1`?
  
• How the does graph of `y=-2x^2` differ from `y=-2x^2 -2`?
  
• How do I evaluate definite integrals?
  
• How do you use integration by parts to find `intxe^x dx`?
  
• How do you find `lim_(x->5)(x^2+2)` using a graph?
  
• What is the range of the function `y = x`?
  
• What is the range of the function `y = cos x`?
  
• What is the identity matrix of a `2xx2` matrix?
  
• What is the range of `f(x) = 3x + 4`?
  
• How do I use elimination to find the solution of the system of equations `y=−2x−4` and `y+4=−2x`?
  
• How do I use substitution to find the solution of the system of equations `4x+3y=7` and `3x+5y=8`?
  
• What is the derivative of `e^x`?
  
• What is the identity matrix of size 4?
  
• What is the graph of `f(x) = x^2`?
  
• What is meant by the 3-D Cartesian coordinate system?
  
• How do I multiply the matrix `((3, 0, -19),(0, 7, 1), (1, 1/5, 2/3))` by -6?
  
• What is the derivative definition of instantaneous velocity?
  
• What is the derivative of `sin^2(x)`?
  
• How do you find the derivative of `y=e^(x^2)` ?
  
• What is Derivatives of `y=sec(x)` ?
  
• What is the derivative of `y=tan(x^2)`?
  
• How do you find the derivative of `y=tan(3x)` ?
  
• How does specific heat of metal compare to that of water?
  
• What is thermal contraction?
  
• How does thermal expansion affect bridges?
  
• What is linear thermal expansion?
  
• Can velocity be zero if accelerating?
  
• How are acceleration, time and velocity related?
  
• How does a vector quantity differ from a scalar quantity?
  
• Question #50c79
  
• How does thermal expansion affect a thermometer?
  
• How does projectile motion relate to linear motion?