Answers created by Euan S.

• Back to user's profile
• Next
• Question #5c4d2
  
• Question #4d8f3
  
• Find and classify all the turning points of y=2x^3+9x^2-24x-1?
  
• Question #ef937
  
• How do you find the roots, real and imaginary, of #y= 2(x+1)^2-(x-4)^2 # using the quadratic formula?
  
• Joe has 16 more baseball cards than football cards. He also noticed that of the total he has three times as many baseball cards as football cards. How many baseball cards does he have?
  
• How do you find the Taylor's formula for #f(x)=e^x# for x-2?
  
• Question #0118d
  
• Question #11ebf
  
• Question #d5958
  
• A projectile is fired in such a way that it's horizontal range is equal to three times it's maximum height. What is the angle of projection?
  
• Find the vertical and horizontal component ? Steps please
  
• What is the outcome?
  
• How do you combine #\log _ { 9} 36- \log _ { 3} 2+ \log _ { 0.5} 4#?
  
• In the first three football games of the seasons, Carlos gained 3 times as many yards as Alden. Travis gained 10 years more than Carlos. Altogether the three players gained a total of 430 yards. How many did Carlos gain?
  
• Question #d4932
  
• Why is #lim_(xrarr-3)(x^2-9)/(x+3)# #-6#? If I solve it by factoring, yes I get #-6# but I read somewhere that if the degree of the numerator is greater than the degree of the denominator, then the limit does not exist?
  
• What is the number if 80% of 50% of it is 0.72?
  
• How do you write and solve an equation that means the sum of 2, and a number divided by 4, is 6?
  
• Greg bought a gold coin for $9,000. If the value of the coin increases at a constant rate of 12% every 5 years, how many years will it take for the coin to be worth $20,000?
  
• Question #78619
  
• Simplify (cot x secx)/(cscx) ?
  
• F(x) = 7x^2 + 4, find and simplify using the derivative function f(a+h) -f(a)/ (h) ?
  
• Question #eab17
  
• A closed box has a square base with side length l feet and height h feet. Given that the volume of the box is 35 cubic feet, express the surface area of the box in terms of l only. ??
  
• For what non zero value of a does the definite integral #int_-a^ax^4-1dx# have a value equal to 0? Help!?
  
• The sum of two numbers is 45. The first is 9 less than the second. How do you find the numbers?
  
• How do you simplify #(-1)^(1/2)#?
  
• Question #e0bdc
  
• How do you solve #x - 3y = -5# and #-x+ y = 1# using matrices?
  
• How do you integrate #int (x+5)/(2x+3)# using substitution?
  
• Question #0b94e
  
• Sam invests $6000 in treasury notes and bonds. The notes pay 8% annual interest and the bonds pay 10% annual interest. If the annual interest is $550, how much is invested in bonds?
  
• Julie throws a fair red dice once and a fair blue dice once. How do you calculate the probability that Julie gets a six on both the red dice and blue dice. Secondly, calculate the probability that Julie gets at least one six?
  
• How do you evaluate the definite integral #int sec^2x/(1+tan^2x)# from #[0, pi/4]#?
  
• The sum of three consecutive integers equal 417. What are the integers?
  
• How do you evaluate the definite integral #int (2t-1)^2 # from #[0,1]#?
  
• Question #1f6c9
  
• How do you use cross products to solve #21/56=z/8#?
  
• If a stone is dropped at an altitude of 174.9 m from a helicopter which is ascending with a velocity of 20.68 m/s, how long does the stone take to reach the ground?
  
• What is the cross product of #<-3, -1, 8 ># and #<2,-4, -9 >#?
  
• How do you find the determinant of #((1, 4, -2), (3, -1, 5), (7, 0, 2))#?
  
• Chef Linda bought 3 bunches of basil for a recipe for a brunch she is catering. Each bunch weighs 2.5 ounces, and 4.2 ounces of usable basil are yielded from all the cleaned bunches. What is the yield percent?
  
• How do you find all solutions to #x^3+1=0#?
  
• The force applied against a moving object travelling on a linear path is given by #F(x)= 2x^3+x#. How much work would it take to move the object over #x in [2, 4] #?
  
• Given the function #f(x)=(x-4)^2-1#, how do you determine whether f satisfies the hypotheses of the Mean Value Theorem on the interval [3,0] and find the c?
  
• How do you use the intermediate value theorem to verify that there is a zero in the interval [0,1] for #f(x)=x^3+x-1#?
  
• How do you factor completely #x^4-81#?
  
• How do you solve the quadratic #z^2+1=0# using any method?
  
• How do you express #(x-1)/(x^3 +x)# in partial fractions?
  
• How do you use demoivre's theorem to simplify #(1-i)^12#?
  
• How much force is needed to accelerate a #66# #kg# skier at #2# #m##/s^2#?
  
• How do you find the derivative of #g(x) = −2/(x + 1)# using the limit definition?
  
• How do you solve #x^2-6x-11=0# by completing the square?
  
• How do you simplify #sqrt2/(2sqrt3)#?
  
• How do you evaluate #[ ( 1 + 3x )^(1/x) ]# as x approaches infinity?
  
• How do you simplify #sqrt9*sqrt3#?
  
• How do you evaluate the limit #e^xcosx# as x approaches #0#?
  
• How do you find the coefficient of #x^2# in the expansion of #(2+x)^5#?
  
• What is the integral of # cos(theta)^2#?
  
• How do you find the limit of #(sqrt(x+4) -2) / x# as x approaches 0?
  
• How do you integrate #e^x*cos(x)#?
  
• How do you solve #x^2+20x+104=0# by completing the square?
  
• How do you find #z, z^2, z^3, z^4# given #z=1/2(1+sqrt3i)#?
  
• Jack can paint the bedroom in 12 hours, and Rick can do it in 10 hours. They work together for three hours. How long will it take Jack to finish the job alone?
  
• How do you find the center, vertices, foci and eccentricity of #9x^2+4y^2-36x+8y+31=0#?
  
• Question #8c1b5
  
• A plumber charges $75 for the first 30 minutes of each house call plus $2 for each additional minute that she works. The plumber charges Adam $113 for her time. For what amount of time, in minutes, did the plumber work?
  
• How do you differentiate #y=ln(e^x+sqrt(1+e^(2x)))#?
  
• Carbon-14 has a half-life of 5,730 years. How long will it take for 112.5 g of a 120.0 g sample to decay radioactively?
  
• A body was found at 10 a.m. in a warehouse where the temperature was 40°F. The medical examiner found the temperature of the body to be 80°F. What was the approximate time of death?
  
• Tickets sold to a school dance cost $4 and the projected attendance is 300. for every $0.10 increase in price the attendance will decrease by 5. what ticket price will generate $1237.5?
  
• How do you use the chain rule to differentiate #y=sin^3(2x+1)#?
  
• How do you evaluate the limit #(2^x+sinx)/x^4# as x approaches #0#?
  
• The number of bacteria in a culture grew from 275 to 1135 in three hours. How do you find the number of bacteria after 7 hours and Use the exponential growth model: #A = A_0e^(rt)#?
  
• How do you integrate #int xsin(2x)# by integration by parts method?
  
• How do you find the volume of the pyramid bounded by the plane 2x+3y+z=6 and the coordinate plane?
  
• How do you differentiate #f(x)=2^x#?
  
• How do you find S20 for the geometric series 4 + 12 + 36 + 108 + …?
  
• An initial population of 175 quail increases at an annual rate of 22%. Write an exponential function to model the quail population. What will the approximate population be after 5 years?
  
• How do you find the derivative of #0# using the limit definition?
  
• How do you find the center and radius of the circle given radius: 5 center: (0,0)?
  
• What is the 31st term of the sequence -108, -90, -72, -54?
  
• What is #int_1^e (lnx)/(2x) dx#?
  
• How do you find the limit of #((e^(2z))-1) / (e^z)# as z approaches 0?
  
• How do you calculate ionization energy using Rydberg constant?
  
• The sum of the digits of a two number is 8. The number exceeds 17 times the unit’s digit by 2. How do you find the number?
  
• A research assistant made 160 mg of radioactive sodium (Na^24) and found that there was only 20 mg left 45 h later, how much of the original 20 mg would be left in 12 h?
  
• How do you determine if #f(x)= tan x# is an even or odd function?
  
• How do you use DeMoivre's theorem to simplify #(5(cos(pi/9)+isin(pi/9)))^3#?
  
• The half-life of cobalt 60 is 5 years. How do you obtain an exponential decay model for cobalt 60 in the form Q(t) = Q0e^−kt?
  
• #90# is #1/10# of what?
  
• How do you solve #8-13b=-12b#?
  
• How do you write an equation for the line that is parallel to #y=2x+7# and passes through #(3,11)#?
  
• Ms. Wilson invested $11.000 in two accounts, one yielding 8% interest and the other yielding 12%. If she received a total of $1,080 in interest at the end of the year how much did she invest in each account?
  
• How do determine whether these relations are even, odd, or neither: #f(x)=2x^2+7#? #f(x)=4x^3-2x#? #f(x)=4x^2-4x+4#? #f(x)=x-(1/x)#? #f(x)=|x|-x^2+1#? #f(x)=sin(x)+1#?
  
• Dani is making punch for a family picnic. She adds 16 fluid ounces of orange juice, 16 fluid ounces of lemon juice, and 8 fluid ounces of lime juice to 64 fluid ounces of water. How many 8-ounce glasses of punch can she fill?
  
• The sum of two consecutive even integers is 26. What are the numbers?
  
• How do you use implicit differentiation to find #(dy)/(dx)# given #3x^2+3=ln5xy^2#?
  
• How do you integrate #int (x+5)/sqrt (9-(x-3)^2) dx#?
  
• Next