Answers created by Scott F.

• Back to user's profile
• Next
• How do you test the alternating series #Sigma ((-1)^(n+1)2^n)/(n!)# from n is #[0,oo)# for convergence?
  
• Which tells us more about an element's properties, its row or its column? Why is this?
  
• Variable acceleration?
  
• The measures of the angles of PQR are in the ratio 2:5:5. What are the measures of the angles?
  
• A group of 48 people visits a museum. There were twice as many children as adults in the group. How do you write a system of equations you could solve to find the number of adults (a) and the number of children (c) in the group?
  
• Aqueous solution of barium sulphide reacts with aluminum chloride. Write name of products ?
  
• The distance between two successive crests of a certain transverse wave is 1.15 m. 20 crests pass a given point along the direction of travel every 16.2 s. What is the wave speed? Answer in units of m/s.
  
• Prove that if 1<a<2 , that 2<a+1/a<3? please , i really need your help!!!
  
• How much will he have to deposit as principal to have enough money in 1 year to buy the bike? Round your answer to the nearest cent.
  
• If the frequency of a wave is kept constant and the amplitude increases will the wavelength increase or remain constant?
  
• How do you simplify #1000^2/(252^2 - 248^2)# ?
  
• What is limit of |x| as it approach zero?
  
• How do you simplify #log_2 (7^2 * 4^7)#?
  
• Question #561d4
  
• If each orbital can only hold 2 electrons, what about the valence electrons? Shouldn't there be eight?
  
• How do impurities lower the melting point of a pure substance?
  
• What is the derivative of #f(t) = (e^t/t +e^t, e^t-tcost ) #?
  
• Question #518f7
  
• In order to determine the slant height of several pyramids, Marjorie used the surface area formula, #S = 1/2 pt + b# for the slant height, #t#. What equation would be the correct transformation of the surface area formula for #t#?
  
• The sound level at a point is increased by 30 decibels. By what factor is the amplitude increased ?
  
• Question #1f484
  
• How do you find the derivative of #y= ( 2x sin x ) ^ 3x cos x#?
  
• Question #99abd
  
• Question #e54b4
  
• Question #ad152
  
• What are the solutions to the equation sin^2x+cosx=-1 on the interval 0 ≤ x < 2pi?
  
• Question #3c6fa
  
• It's not intuitive that the direction of angular velocity is perpendicular to the plane of rotation of the object? Can someone explain?
  
• Question #10fa9
  
• Question #5454a
  
• How do you differentiate #y=ln(9x+4)^2#?
  
• How do you differentiate #f(x)=(x-sinx)/(x^2cosx)# using the quotient rule?
  
• Question #e7dd8
  
• Question #c7514
  
• Referring to the pH chart, how many times more acidic is a solution of pH 1 than a solution of pH 2?
  
• Question #8575f
  
• In a 30-60-90 triangle, what is the length of the hypotenuse when the shorter leg is 7 in.?
  
• What is the formula equation for methane (#CH_4#) is ignited with oxygen, resulting in carbon dioxide and water?
  
• Question #56cff
  
• Question #0a254
  
• How do you order the following from least to greatest #-sqrt49, -sqrt7, 0, -sqrt51, -6.8#?
  
• Question #fea28
  
• Question #a3e85
  
• How do you translate into mathematical expressions and find the number given The product of three more than twice a number and two is fourteen?
  
• #sqrt (t) = sqrt (t - 12) + 2? #solve the radical equations, of possible.
  
• How do you find the possible values for a if the points (5,8), (a,2) has a distance of #3sqrt5#?
  
• Question #26795
  
• How do you prove # {(sin(x + y)) / sin(x)cos(y)} = 1-cot(x)tan(y)#?
  
• Question #3cd1d
  
• What is the algebraic property demonstrated by if #x=3# and #3=y#, then #x=y#?
  
• How do you write a recursive rule and an explicit rule for the arithmetic sequence 19, 9, -1, -11,...?
  
• What is the implied meaning of a word based on its context?
  
• Two cars left the city for a suburb, 120 km away, at the same time. The speed of one of the cars was 20 km/hour greater than the speed of the other, and that is why it arrived at the suburb 1 hour before the other car. What is the speed of both cars.?
  
• How do you verify sin2x * cotx = 1 ?
  
• Question #37bc4
  
• Fill in the blank. Let θ be an angle in standard position, with (x, y) a point on the terminal side of θ and r = #sqrt(x^2 + y^2)≠ 0#?
  
• To have 1st, 2nd, 3rd, etc. overtones in a closed or open-air column, do you need to have a longer tube length (than the one that produced the fundamental)?
  
• Why would we want to start viewing into a microscope under low power first, and then switch to high power?
  
• How do you solve: #n + 2 = -14 - n#?
  
• Question #1864b
  
• How can you determine wind direction by wetting your finger and holding it up in the air?
  
• Question #a263e
  
• Question #a6b93
  
• What is the pOH if the pH is 11.25?
  
• How do you find the slope that is perpendicular to the line #y=-4x+2#?
  
• An object with a mass of #10 kg# is lying still on a surface and is compressing a horizontal spring by #5/6 m#. If the spring's constant is #24 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?
  
• How do you find the remaining trigonometric functions of #theta# given #costheta=24/25# and #theta# terminates in QIV?
  
• If a #12 kg# object is constantly accelerated from #0m/s# to #40 m/s# over 8 s, how much power musy be applied at #t=1 #?
  
• Question #84027
  
• How do you find the amplitude, period and graph #y=3cos(1/2theta)#?
  
• Question #c2c04
  
• The sum of $8000 was deposited at 8 percent interest compounded annually. How much money was in the bank at the end of 2 years?
  
• How do you write the answer in scientific notation given #(7.2times10^-3)^3#?
  
• In #triangle ABC#, #a=12, b=8, c=8#, how do you find the cosine of each of the angles?
  
• Solve the equation #cos^2x+cos^2(3x)=1#?
  
• Question #bca2e
  
• How do you solve #7r \div 7= 21\div 7#?
  
• An object with a mass of #110 g# is dropped into #750 mL# of water at #0^@C#. If the object cools by #70 ^@C# and the water warms by #3 ^@C#, what is the specific heat of the material that the object is made of?
  
• What is the vertex form of the equation of the parabola with a focus at (0,-15) and a directrix of #y=-16 #?
  
• Question #78dbb
  
• How do you evaluate #\frac { 6+ i } { 2- 3i } =#?
  
• Question #2cd6b
  
• Question #5231b
  
• How would you complete and balance the acid base neutralizations reaction: #HNO_3 + Al(OH_3) ->#?
  
• How do you use #csctheta=5# to find #cottheta#?
  
• How do you use a calculator to evaluate #tan4.5#?
  
• Question #78f8a
  
• Question #7392e
  
• How do you find the degree of the polynomial #7x ^ { 5} y ^ { 3} z#?
  
• The endpoints of the diameter of a circle are (-7, 3) and (5, 1). What is the center of the circle?
  
• Given point (6,-10) how do you find the distance of the point from the origin, then find the measure of the angle in standard position whose terminal side contains the point?
  
• If #sin(pi/5) = y#, what is #csc((4pi)/5)#?
  
• How do you prove #(4sintheta-costheta)(1-2sin^2 theta) = sin(4theta)#?
  
• How do you simplify #\frac { 1} { \sin x + 1} + \frac { 1} { \sin x - 1}#?
  
• How do you factor #6x ^ { 3} - 24x ^ { 2} + 18x#?
  
• Question #1d40d
  
• Can you prove #1- \cos ^ { 2} x = \sin x \cos x \tan x#?
  
• The dimensions for a rectangular prism are #x+2# for the length, #x +3# for the width, and #x# for the height. What the volume of the prism expressed as a polynomial in standard form?
  
• Question #27266
  
• A triangle has two corners with angles of # pi / 4 # and # pi / 4 #. If one side of the triangle has a length of #16 #, what is the largest possible area of the triangle?
  
• Next