Answers created by Jacob

• Back to user's profile
• What is the trigonometric form of #9 e^( (3pi)/2 i ) #?
  
• What is the value of x? (thanks!)
  
• How do you read a cumulative binomial probability table?
  
• In the binomial expansion of #(1+ax)^n#, where #a# and #n# are constants, the coefficient of #x# is 15. The coefficient of #x^2# and of #x^3# are equal. What is the value of #a# and of #n#?
  
• How do you implicitly differentiate # y^2+(y-x)^2-y/x^2-3y#?
  
• Question #04a42
  
• Question #27995
  
• How do you graph the parabola #y = x^2 - x - 2# using vertex, intercepts and additional points?
  
• The average age of the seven P.E. teachers at Carl's school is 38. If the ages of six of them are 52, 30, 23, 28, 44, and 45, what is the age of the seventh teacher?
  
• Question #d4b35
  
• How do you solve the system of equations #y= 3x - 2# and #y = 2x - 8#?
  
• Question #1a4ca
  
• How do you write 12,040,000,000,000 in scientific notation?
  
• How do you multiply #(3x-15)/(4x^2-2x)*(10x-20x^2)/(5-x)#?
  
• How do you graph the inequality #y>x-3#?
  
• Question #d5b78
  
• How much energy is needed to raise the temperature of 2.0 g of water by 5.0°C?
  
• From the digits 1, 2, 3, 4, 5, 7, 9, how many numbers of 3 digits can be formed if repetition is allowed in a number?
  
• The wavelength of a photon in nm having energy of 3.083•10^12J is approximately?
  
• How do you divide #\frac { 13u ^ { 4} + 6u ^ { 3} + 4u ^ { 2} } { 2u ^ { 2} }#?
  
• How do you simplify #(-6-8i)(-3+8i)#?
  
• Circle A has a center at #(4 ,-1 )# and a radius of #5 #. Circle B has a center at #(-3 ,6 )# and a radius of #2 #. Do the circles overlap? If not, what is the smallest distance between them?
  
• If the universe is expanding at the speed of light and light travels at the speed of light then how are we still able to see light from the galaxies that are moving away from us?
  
• Question #5de02
  
• Simplify #rootx(a^y)#? for example, #root8(5^6)#
  
• Question #f8c13
  
• The heights of a certain group of adult parrots were found to be normally distributed. The mean height is 36 cm with a standard deviation of 7 cm. In a group of 1200 of these birds, how many would be more than 29 cm tall?
  
• What is the ionic radii trend?
  
• If 980 kJ of energy are added to 6.2 L of water at 291 K, what wil the final temperature of the water be?
  
• How do you use Pascal's triangle to calculate the binomial coefficient of #((9), (4))#?
  
• How do you find the value of #z# so that the area under the standard normal curve from 0 to #z# is 0.4049?
  
• How do you factor the trinomial #y^2-7y-30#?
  
• How do you solve #-5.6= \frac { 4} { 5} + 12.2#?
  
• If 2-3i is a root of #z^3-7z^2+25z-39=0#, find the other two roots?