Answers created by 1s2s2p

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• If #abs(((3-i)(k+i))/(2-i))=10^(1/2)#, then the value of #k# is?
  
• How do you find the volume bounded by #y = e^x# , y=0 , x = 0, x = ln2 revolved about the x=axis?
  
• What is the current in a circuit if the charge passing each point is 10 C in 2 s, 20 C in 40 s, 240 C in 2 minutes?
  
• How do you find #(delf(x,y))/(dely)# and #(delf(x,y))/(delx)# of #f(x,y)=(yx^2-2y)/(2ye^x+y^-3)#, using the quotient rule?
  
• How do you factor #w^4-625#?
  
• How do you solve #ln(1-8n)-10=-7#?
  
• How do you add #(7+5i)+(2-4i)# in trigonometric form?
  
• If #f(x) = 2x^2+1# and #g(x) = 3x-2#, what is the value of #f(g(-2))#?
  
• How do you graph and solve #4 | 3 - z | - 8 = 8#?
  
• In the combustion of butane (#"C"_4"H"_10#), how many moles of oxygen are required to completely combust 5.26mol of butane?
  
• If #y=y^2+5xy# then derivative of y is?
  
• The first derivative of functions: #y^3=e^x ln(x^2-1)# is?
  
• The derivative of #y=sin^-1(x/2)# is?
  
• How do you identify the horizontal asymptotes for the following function? #f(x)=(x-8)/(x+3)#. #y=#?
  
• Given #log_3(5x^2+x−y)=1# then #y=ax^n+x+b#, what is #a#, #b#, #n#?
  
• How do you simplify #(tan x + sec x) (tan x-cos x)#?
  
• Contrast the following terms and give one exapmle for each, Electronegativity and electro affinity?
  
• How do you convert #r=sin(theta)+1# to rectangular form?
  
• How do you solve #x^2=2x#?
  
• How do you convert #y=-y^2-3x^2-xy # into a polar equation?
  
• How do you use the Binomial Theorem to expand # (x-5)^5#?
  
• What does Flat Universe mean?
  
• If #a/b - b/a =3# Then what is the value of #a^3/b^3 + b^3/a^3#?
  
• Use the inverse functions to find all solutions in the interval #[0, 2π)# #3cos^2(x) + 5cos(x) = 0#?
  
• What is the equation of the line tangent to # f(x)=(x-2)/(x^2-4) # at # x=-1 #?
  
• How Do I test this equation #y=x^3-3x# for the x-axis, y-axis or origin symmetry?
  
• A charge of #2 C# is at #(-2 , 4 )# and a charge of #-1 C# is at #(-6 ,8 ) #. If both coordinates are in meters, what is the force between the charges?
  
• Integration by parts?
  
• Use first principles to find the gradient of #y=tanh(x)#?
  
• What is #(6x^{4} - 5x^{3} - 18x^{2} - 5x + 2) -:( 3x + 22)#?
  
• A photon of light with wavelength 700 nm has energy E.A photon of light of what wavelength would correspond to energy 2E?
  
• How do you find the zeros, if any, of #y= -7x^2-x+22#using the quadratic formula?
  
• How do you solve #-101\leq 10x - 1\leq 69#?
  
• find the critical numbers of #f(x) = 2x^3+x^2+2x#?
  
• What is the derivative of #f(t) = (t-lnt^2, t^2-sint ) #?
  
• How do you solve #frac { 3 } { 5 x } + \frac { 7 } { 2 x } = 1#?
  
• What is the domain and range of #y=2x-3#?
  
• How do you use the laws of exponents to simplify the expression #(-2x^2y)^3(5xy^3)^2#?
  
• What is #f(x) = int e^(2x)-e^x+x dx# if #f(4 ) = 0 #?
  
• A man weighing 100kg on the earth is found to weigh 101kg when on the space ship .What is the velocity of the space ship ?
  
• A rod 1m long moves with a velocity of 0.6c.Calculate it's length as it appears to an observer on the earth?
  
• A rocketship 100m long on the earth is moving with 0.9c.How much it's length will appear to an observer on the earth?
  
• What does it mean to interpolate a data?
  
• How would you answer this question?
  
• How do you find the 10th term of an arithmetic series?
  
• What is the partial pressure of #"CO"_2# in a container that holds 5 moles of #"CO"_2#, 3 moles of #"N"_2#, and 1 mole #"H"_2# and has a total pressure of 1.05 atm?
  
• How do you rationalize the denominator and simplify #12/sqrt13#?
  
• How do you use the trapezoidal rule with n = 4 to estimate the integral #int_0^(pi/2)cos(x^2)dx#?
  
• Solve the system algebraically?
  
• Please help. I'm not sure how to do this quickly without multiplying it all out?
  
• What is the number of REAL solutions of the following equation?
  
• How do you solve for #t# in #\frac { 1} { r } = \frac { 1} { t - 6}#?
  
• What is the standard form of a polynomial #(5h – 3)(3h + 7) #?
  
• What is the derivative of #f(x) = sin(x)-cos^2(x)#?
  
• Use the Binomial Theorem to expand #(x+7)^4# and express the result in simplified form?
  
• A particle moves along the #x#-axis in such a way that its position at time #t# is given by #x(t) = (2-t)/(1-t)#. What is the acceleration of the particle at time #t=0#?
  
• What is the velocity of a satellite moving in a stable circular orbit about the Earth at a height of 3600 km?
  
• Find an equation of the tangent to the curve at the point corresponding to the given value of the parameter?
  
• What is the equation of a parabola that is a vertical translation of #y=-5x^2+4x-3# of -12 and a horizontal translation of -9?
  
• Change into polar form #x^2+2y-1=0#?
  
• How much energy is required to melt #7.3g# of ice at #0^circC#?
  
• How do you graph and solve # abs[2-x/2]-1<=1#?
  
• How do you differentiate given #y=(secx^3)sqrt(sin2x)#?
  
• Convert the polar equation to a rectangular equation?! percalc hw help?
  
• Calculate #DeltaS^Theta# at #25^circC#?
  
• How do you multiply #e^(( 2 pi )/ 3 i) * e^( pi/2 i ) # in trigonometric form?
  
• What is an example of an electric field practice problem?
  
• Some help please ???
  
• An object with a mass of #7 kg# is hanging from a spring with a constant of #3 (kg)/s^2#. If the spring is stretched by # 1 m#, what is the net force on the object?
  
• How do you convert #r cos(θ) = 9# to rectangular form?
  
• Radioactive substance disintegrate by 10%in 1 month .How much fraction will disintegrate in 4 months?
  
• Convert the polar equations to a rectangular equations?!
  
• What are three consecutive integers that add up to 105?
  
• How do you convert #9=(5x+y)^2-2y+x# into polar form?
  
• How do you convert #5y= x -2xy # into a polar equation?
  
• How do I convert #r=3+3sec(theta)# to a Cartesian equation?
  
• How do I find the derivative of #ln(ln(2x))#?
  
• Need help with part b)! How do we show that this is true?
  
• What is the standard form of # y= (x + 9) (x + 6) #?
  
• How do you multiply #e^(pi/3i)*e^((3pi)/2i)# in trigonometric form?
  
• I am using V+E-Ir. But I can't get the answer yet as 05 or 0.6 ohm? How?
  
• How do you differentiate #g(z) = z^2cos(z)e^(2+z)# using the product rule?
  
• #xsinx# is even or odd,?
  
• Let X be a normally distributed random variable with μ= 100 and σ= 10. Find the probability that X is between 70 and 110. (Round your answer to the nearest whole number percent and include the percent symbol.) ?
  
• Technicium-99m has a half-life of 6.00 hours? plot the decay of 800. g of technicium-99m for 5 half-lives
  
• How do you find the inverse of #f(x)=log(x+7)#?
  
• What ester is obtained when mixing propanoic acid with ethanol?
  
• What is the total intensity of the sun?
  
• What is Stefan Boltzmann law used for?
  
• What is Stefan Boltzmann law?
  
• How do you simplify #5x+6(x -2)-8(x-3)#?
  
• How do you solve #|3x - 6| = x + 4#?
  
• Why are amines Lewis bases?
  
• Given the function #k# described by #k(x)=x+18#, how do you find #k(-15)#?
  
• Circle A has a center at #(3 ,5 )# and an area of #78 pi#. Circle B has a center at #(1 ,2 )# and an area of #54 pi#. Do the circles overlap?
  
• If #f(x) = 6x - 4# and #f(a) = 26#, what is the value of #a#?
  
• The atomic weight of a newly discovered e ement is 98.225 amu. It has two naturally occuring isotopes. One isotope has a mass of 96.780 amu. The second isotope has a percent abundance of 41.7%. What is the mass of the second isotope?
  
• How do you solve #y^2-12y=-35# by completing the square?
  
• How do you find the derivative of # y = sin^2 x#?
  
• How do you solve #abs(2g-5)=9#?
  
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