Answers created by Andre R.

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• How do you arrange these from greatest to least: `- 5.7\bar97, -5.\bar797, -5.\bar79, -5.79\bar7, -5.797`?
  
• Question #473da
  
• Question #35861
  
• What is the energy required for chemical reaction called?
  
• A lake has a pH of 3.5. Is it acidic or basic? Would fish be healthy in this lake?
  
• How do you write an equation for a circle given center `(-sqrt13,42)` and passes through the origin?
  
• What is the dot product of `<-8,4,2 >` and `<-3,1,6 >`?
  
• What are alkenes used for?
  
• How do you find the center and radius for `x^2+y^2+x-6y+9=0`?
  
• What is the simplest formula for copper (II) and nitride?
  
• Question #6c28d
  
• Question #f9075
  
• `3 3/4` is bigger than `1 19/21`. How many times bigger?
  
• Question #05592
  
• In a museum, the ratio of adults to children is 13 to 5. If there are 288 people in the museum, how many children are there?
  
• Circle A has a center at `(2 ,2 )` and an area of `18 pi`. Circle B has a center at `(13 ,6 )` and an area of `27 pi`. Do the circles overlap?
  
• Question #42449
  
• How did Catherine the Great become Czarina?
  
• How do you solve `7*e^(x-3)=57`?
  
• How do you find `abs( -3 i )`?
  
• What is the slope of the line that passes through (2, 5) and (4, 4)?
  
• How do you write a vector equation and a parametric equation for each line: the line through A(-1,2,1) and B(1,2,1)?
  
• A bacteria culture starts with 1000 bacteria. 2 hours later there are 1500 bacteria. How do you fin an exponential model for the size of the culture as function of time t in hours, and use the model to predict how many bacteria there will be after 2 days?
  
• Tim has 80 coins in his piggy bank of these coins, 28 are nickels and the rest are quarters. What percent of the coins in the bank are quarters?
  
• Question #7fcaa
  
• How do you divide `7 4/5 div 1 1/4`?
  
• A mixture of concrete is made up of sand and cement in a ratio of 4:5. How many cubic feet of each are needed to make 135 cubic feet of concrete mix?
  
• How do you graph `\frac { 2} { 3} x = 6y - 8`?
  
• Is (1,0) is an ordered pair of the function f(x)= 1 + x?
  
• Which is an equation of a line that passes through point P(1,1) and is parallel to the given line `y=-2x+4`?
  
• Question #5430f
  
• How do you divide `-2/i`?
  
• How do you integrate `int x/sqrt(x+1)` using substitution?
  
• How do you write 1/50 as a percent?
  
• How do you find the limit of `absx/x` as `x->2^-`?
  
• How do you find the derivative of `y=e^(e^(3x^2))`?
  
• Three consecutive integers can be represented by n, n+1, and n+2. If the sum of three consecutive integers is 57, what are the integers?
  
• How do you add `(7+9i)+(2+i)` in trigonometric form?
  
• How do you solve `-0.07\div ( - 0.01)`?
  
• What is 0.8 times 1.3?
  
• What is the derivative of `x * ((4-x^2)^(1/2))`?
  
• How do you solve `3x^2-4x-2=0` by completing the square?
  
• How do you write 18% as a fraction?
  
• How do you simplify `-4( 5+ x ) + x + 6`?
  
• How do you simplify `(3-5i)+(3+5i)`?
  
• How do you write an equation for a circle given endpoints of a diameter at (-5,2) and (3,6)?
  
• How do write in simplest form given `3/2*(-1/3)`?
  
• Is `f(x)=(-x^3+2x^2-3x+7)/(x-2)` increasing or decreasing at `x=-1`?
  
• How do you graph `y=secpix`?
  
• How do you solve `x^2-2x>=0`?
  
• Question #ef40b
  
• The Harris Poll asked a sample of 1009 adults which causes of death they thought would become more common in the future. Gun violence topped the list: 706 members of the sample thought deaths from guns would increase. ?
  
• Miranda earned scores of 84, 91, 95, 78, and 92 on her math tests. How do you find her average (mean) score?
  
• Question #8312f
  
• How do you implicitly differentiate `5y^2=e^(x-4y)-3x`?
  
• What is the equation of the line tangent to `f(x)=(e^x-x)^2` at `x=3`?
  
• How do you find the slope of a tangent line to the graph of the function `f(x)=x^3-2x+1` at (-1,2)?
  
• How do you implicitly differentiate `-1=-y^2x-2xy-ye^y`?
  
• How do you solve `\frac { 3} { 5} | 10- 5x | + 7> 25`?
  
• How do you solve `\frac { 3} { 5} | 10- 5x | + 7> 25`?
  
• How do you multiply 0.47 • 3.01?
  
• Question #aa6f7
  
• How do you graph `y=2/(x+9)-7` using asymptotes, intercepts, end behavior?
  
• How do you simplify `(8+6i)-(2+3i)`?
  
• Water leaking onto a floor forms a circular pool. The area of the pool increases at a rate of 25π cm²/min. How fast is the radius of the pool increasing when the radius is 6 cm?
  
• How do you write the quadratic equation in standard form `x^2 - 12 + 4x = (x - 2)^2 + 2`?
  
• How do you find the equation of the line tangent to the graph of `y = e^(-x^2)` at the point (2, 1/e^4)?