Answers created by Tazwar Sikder

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• Establish the identity. ((cot^2 x)/(csc(x)-1)) = (1+sin(x))/(sin(x)) = ____________________ Could someone explain to me how to solve this?
  
• Solve using double angles?. Sin2x-sinx=0
  
• How to simplify?
  
• The derivative of natural log?
  
• Use a mapping diagram to determine whether the relation is a function. ​{(4​,5​), ​(1​,8​), ​(1​,9​), ​(9​,6​), ​(2​,13​), ​(4​,1​)} Which of the following mapping diagrams represents the​ relation?
  
• How do you find #int sec^2x/(1-sin^2x) dx #?
  
• Vectors question?
  
• Why sometimes in the trigonometric equations in the answers we add 2nPi and other times only nPi?
  
• How do you solve: tanθ + secθ = 1 ?
  
• Finding whether the following integral converges or diverges?
  
• The threshold frequency of silver is 9.71×1015 Hz. What is the work function of silver?
  
• How many moles of solute are in 425ml of 3.0M? How many grams of MgCl2 is this?
  
• How do you solve (5cscx)/3 = 9/4 for 0 < x < 2pi rounded to the nearest hundredth of a radian ?
  
• Fred is 4 years older than Barney. Five years ago the sum of their ages was 48. How old are they now?
  
• Find the complex conjugate of #(3+2i)/(1-i)# ?
  
• Prove that lim 1/(x^3+1)=2 when x approaches 1?
  
• Hi. I don't quite get this: At the point where the function f(x) = e^x intersects the y-axis the tangent is drawn. Find the x-coordinate of the intercept of this tangent with the x-axis. ?
  
• Calculate the temperature difference if 180kg of steel grains 85113kj of heat.(the specific heat of steel is .49 kj/kgk)............follow the eqation (Q=MCp T2-T1 )....?
  
• Integrate ((x / (1+x²)) ?
  
• How do you rewrite 10,000,000 as a power of ten?
  
• Projectile Motion?
  
• Jennifer works for an automaker and tests the safety performance of cars. She watches a 2,000-kilogram car crash into a wall with a force of 30,000 newtons. What’s the acceleration of the car at impact? Use A=v-u/t .
  
• Solve the polynomial inequality and express in interval notation? x^2-2x-15 < 0 I don't understand why the answer (-3,5) does not include negative infinity or infinity in the answer
  
• How do you differentiate #f(x)= cscx# twice using the quotient rule?
  
• Given #g(x)=5/(x−3)#, evaluate and simplify: #(g(5+h)−g(5))/h =#?
  
• What is x if #(4x+3)^2=7#?
  
• (3+√5)^-3 + (3-√5)^-3=?
  
• Find the area bounded by the curve #y=2x^2-6x# and #y=-x^2+9#?
  
• How do you solve #2log_6 4-1/4log_6 16=log_6 x#?
  
• How do you integrate # ((ln(x))^7)/x dx#?
  
• How do you Find the three consecutive even numbers such that the sum of the first and the third is twice the second?
  
• Quadratic formula ?
  
• How to solve this problem step by step with application of integration?
  
• find the range of ? f(x) = |x| + 3
  
• Physics Question?
  
• What is the logarithmic differentiation to evaluate for f(x)=(x)^ln(3) ?
  
• What is the integral of 2xe^x?
  
• Find the number or numbers such that the square of five less than the number is 24?
  
• Use the second fundamental theorem of calculus to calculate #F(x)=int_-3^x(t^2+3t+2)dt#?
  
• Oh, can someone finally help me solve this problem? Thank you!
  
• A rational number with a denominator of 9 is divided by (-2/3). The result is multiplied by 4/5 and then -5/6 is added. The final value is 1/10. What is the original rational?
  
• Question #ea4f3
  
• Question #aa5af
  
• The difference between the solutions to the equation #x^2 = a# is 30. What is #a#?
  
• A student calculates the density of iron as 6.6 g/cm3 using lab data for mass and volume. A handbook reveals that the correct value is 7.57 g/cm3. What is the percent error?
  
• Question #59139
  
• Question #b7e7d
  
• Question #d8878
  
• Is #0.25# a perfect square?
  
• Question #f3947
  
• In an equation #ax^2+bx+c#, where #(m,n)# are the x-intercepts, what is #(m,n)# in terms of #b#?
  
• Question #0d4e0
  
• Question #eb80b
  
• Question #64391
  
• Question #88084
  
• How much #90%# saline solution should we mix to #3qt.# of #15%# saline mix to make #45%# saline solution?
  
• How do you simplify #(n^3)^3*2n^-1# and write it using only positive exponents?
  
• How do you solve #-e^(-3.9n-1)-1=-3#?
  
• Express the fact that #x # differs from 2 by less than#1/ 2# as an inequality involving an absolute value. What is #x#?
  
• Question #beb6e
  
• Question #4195c
  
• A particle of charge #-2*10^-9#C is acted on by a downward electrostatic force of #3*10^-6# N when placed in this field. The gravitational and electrostatic force respectively exerted on a proton placed in this field are???
  
• Question #ad5c7
  
• How do you evaluate #\sqrt ( ( - 1- 2) ^ ( 2) + ( 2- ( - 4) ^ ( 2) ) )#?
  
• Question #52d16
  
• What is the branch of chemistry that looks at the release of electrical energy called?
  
• Question #7b60e
  
• What is the domain of #f(x) = 8/(x-13)#?
  
• Question #b9b03
  
• A spherical object has a radius of 28.9 cm. If the density of the object is 3.52 g/cm^3, what is its mass?
  
• Question #f0445
  
• Question #5155e
  
• Question #a7f09
  
• Question #d06cf
  
• Question #23e80
  
• Question #b27b7
  
• Question #86faf
  
• How many #"microlitres"# are in a volume of #1.22xx10^-23*cm^3#?
  
• Question #83e60
  
• How do you simplify #25^ { n } - 5^ { n + 1}#?
  
• Sqrt 128x^9y^16/[16x^2y]? #Simplify
  
• Question #03d75
  
• A right triangle has sides A, B, and C. Side A is the hypotenuse and side B is also a side of a rectangle. Sides A, C, and the side of the rectangle adjacent to side B have lengths of #5 #, #2 #, and #4 #, respectively. What is the rectangle's area?
  
• How much air resistance acts on a falling 100-N box of nails when it reaches terminal velocity?
  
• Discounts and markups?
  
• Question #be751
  
• A 12-foot board is divided into two pieces so one piece is twice as long as the other. What are the lengths?
  
• Question #f3694
  
• If the volume of an object were to double, with no change in mass, its density would? a) Halve b) Double c) Be the same d) None of these
  
• How do I solve this ?
  
• Time varies inversely with speed if the distance is constant. A trip takes 4 hours at 80 km/h. How long does it take at 64 km/h?
  
• If f(x)=2x+1 and g(f(x))=4x^2+4x+3 find g(x) given that g(x)=ax^2+bx+c how do I do that?
  
• Question #ffc58
  
• Question #9d54d
  
• Question #15209
  
• In a scientific experiment, the mass of an object was determined to be 20.450 g, 20.313 g, and 21.013 g. What is the mean mass of the object? And the average deviation from the mean?
  
• Question #a0c75
  
• Question #0042b
  
• Question #3d8fc
  
• Question #d1324
  
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