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  • Math
    The easiest way I have for knowing the difference between linear and nonlinear is the exponent value on the variable x. It is important to understand the root word in linear. It is LINE. A...

    Asked by schnoop on via web

    8 educator answers.

  • Math
    Hey Shelly, All of these answers are great, but unless you get a better conceptual understanding of the basic parts of a slope intercept equation you will continue to struggle with these equations...

    Asked by shelly-belly on via web

    10 educator answers.

  • Math
    Another method is knowing to take the derivative of f(x) = sin^2(x) + cos^2(x) f '(x) = 2 sin(x) cos(x) + 2 cos(x) (-sin(x)) = 2 sin(x) cos(x) - 2 cos(x) sin(x) = 0 Since the derivative is zero...

    Asked by mathexpert on via web

    3 educator answers.

  • Math
    As a general rule, to find the surface area of an object you have to find the area of each shape that make up the surface of the object. There are four of steps to finding the surface area of a...

    Asked by tuty on via web

    4 educator answers.

  • Math
    Without people who can do math, we would not have many of the things we take for granted. We wouldn't have cars, highways, or plane travel--math is required to design and build such things. Tall...

    Asked by jazmine on via web

    8 educator answers.

  • Math
    It's not possible to answer this question accurately without resolving the ambiguity about area. Is 1824 sq ft the area of the rectangle, or of the deck?

    Asked by ckpan1 on via web

    2 educator answers.

  • Math
    sin x - cos x=0 We could divide the equation by (cos x) and the result will be: sin x /cos x - 1 =0 But we know that the ratio between sinx and cos x determine the tangent function. tg x -1 =0...

    Asked by pufsipene on via web

  • Math
    If 3/5 is 15, then 1/5 must be 5 (15/3). So 5/5 of that number would be 5 x 5 = 25. So 25 is your answer.

    Asked by anime on via web

    4 educator answers.

  • Math
    Geometry is a branch of mathematics that deals with the properties, measurement, and relationships between points, lines, surfaces, and solids. The word, geometry, comes from the Greek word...

    Asked by turnere on via web

  • Math
    The letters R, Q, N, and Z refers to a set of numbers such that: R = real numbers includes all real number [-inf, inf] Q= rational numbers ( numbers written as ratio) N = Natural numbers (all...

    Asked by dariuszzacz on via web

    1 educator answer.

  • Math
    i) The question is not clear as to what are A2,B2 and C2.Assuming that normally capital letters are used for naming the angles and vertices, a solution is given. Normally a triangle is said to be...

    Asked by cantdance95 on via web

  • Math
    Trigonometry is used in geography and navigation . The sailors were known to have been using it to detrmine their position , when they were in the middle of the see. In astronomy to calculate the...

    Asked by jeffgarcia on via web

  • Math
    If you want to have a healthy life, and one in which you do not waste money, you use arithmetic all the time. Every time you go to the grocery store, you should be calculating which item of the...

    Asked by alnyash on via web

    3 educator answers.

  • Math
    We have to find Int[sin^2 x cos^3 x dx] Int[sin^2 x cos^3 x dx] => Int[sin^2 x (1 - sin^2 x)cos x dx] let t = sin x , dt = -cos x dx => Int[t^2(1 - t^2) dt] => Int[t^2 - t^4 dt]...

    Asked by nashflores on via web

    2 educator answers.

  • Math
    Kinetic friction is the maximum force required to maintain the uniform motion or maintain the constant velocity. Under such condition , the net force due to the kinetic frictional force and the...

    Asked by shawn123 on via web

  • Math
    We know that the area of the circle is given as the following function: A = (r^2)*pi where r is the radius. But we know that: C = 2r ( c is the circumference) ==> r = C/2 Now substitute...

    Asked by hannah555 on via web

    1 educator answer.

  • Calculus
    We have to find the integral of cos 2x. Int[ cos 2x dx] let 2x = u du = 2*dx dx = (1/2)*du => Int [ cos u * (1/2) du] => (1/2) sin u + C substitute u = 2x => (1/2) sin 2x + C The required...

    Asked by grade83 on via web

    1 educator answer.

  • Math
    dy/dx = x - yUse substitution:v = x - yDifferentiate with respect to xdv/dx = 1 - dy/dxdy/dx = 1 - dv/dxNow we use above substitutions in differential equationsdy/dx = x - y1 - dv/dx = vdv/dx = 1 -...

    Asked by reflex on via web

    1 educator answer.

  • Math
    A "mixed number," in math terms, is a whole number with a fraction attached to it. What you have posted in your question is essentially an "improper fraction," a situation that occurs when the top...

    Asked by roeboy on via web

    1 educator answer.

  • Math
    To find the anti derivative of secx. Or to find the In secx dx. We know that d/dx( se cx) = secx tanx.....(1) We know that d/dx tanx = sec^2 x...(2) Therefore Integral secx dx = Integral secx...

    Asked by portoruj on via web

  • Math
    In mathematics, the constant e has a number of important properties. The brief answer to your question is that it has a value of e=2.7182818284 (to ten decimal places) It is defined as the...

    Asked by amitparmar on via web

    1 educator answer.

  • Math
    To find 10% of a number, just move the decimal one place to the left. 10% of 123 is 12.3 or, multiply the number by the decimal equivalent. 10% is also written as .10 500 x .10 = 50. 20% is also...

    Asked by shannon420 on via web

    3 educator answers.

  • Math
    Here we have to find x for which cos 2x = cos x. We know that cos 2x = 2(cos x)^2 - 1. Therefore we can write the expression given as 2(cos x)^2 - 1 = cos x or 2(cos x)^2 - 1 - cos x = 0 =>...

    Asked by frontman0 on via web

  • Math
    A whole number is a number that has no "pieces" attached. A piece of a number is a fraction. If you look at a number line, the numbers named, 1,2,3, and so on are whole numbers, while the spaces...

    Asked by ally59483 on via web

    3 educator answers.

  • Math
    We all seem to know what is mathematics, but when it comes to define it we seem to fail completely. A dictionary meaning of mathematics could be a science dealing with study of quantities and their...

    Asked by chrislyn09 on via web

  • Math
    We have to solve the quadratic equation x^2 + 3x – 4 = 0. One way to do this is by factorization. x^2 + 3x – 4 = 0 => x^2 + 4x – x – 4 =0 => x(x+4) -1(x+4) = 0 => (x – 1)(x + 4)...

    Asked by carolinesmiths on via web

    1 educator answer.

  • Math
    e^2x-3e^x +2 =0 Let us assume that e^x =y. Now substitute: ==> y^2 -3y +2 =0 Factorize:\ (y-2)(y-1)=0 y1= 2 ==> y1=e^x1= 2 ==> x1=ln2 y2=1 ==> y2=e^x2= 1 ==> x2=0 The solution for...

    Asked by seedrasoso on via web

    1 educator answer.

  • Math
    a)The initial kinetic enrgy of the block is the product of Exerted force along the movent of the block and the velocity of the block (1/2)mv^2 = (1/2) 6*2^2 =12 J. b)The 75 N force makes block...

    Asked by jayjay00 on via web

  • Math
    The equation sin x = 1 + cos^2x has to be solved. sin x = 1 + cos^2x Use the relation sin^2x + cos^2 x = 1 or cos^2x = 1 - sin^2x The given equation can be written as: sin x = 1 + 1 - sin^2x sin^2x...

    Asked by frontman0 on via web

  • Math
    A fraction is really a division problem. One-third means ONE divided into THREE parts. So, to find the decimal equivalent, do the division. 1 divided by 3 = 0.33333333 etc. In a case like this,...

    Asked by soccerchic96 on via web

    2 educator answers.

  • Math
    The identity is: atan(x) + acot(x) = pi/2 Your equation is atan(x) + acot(1/3) = pi/2 The only answer is x = 1/3

    Asked by lostgirl on via web

    2 educator answers.

  • Math
    make a square with 4 of the sticks and then make an X in the middle with the other 2. It's like folding a square piece of paper into 4 equilateral triangles

    Asked by pavelpimen on via web

  • Math
    In a discussion all sets are cosidered to be the subset of big set . Such a big set of which all other sets under discussion are subsets is called the universal set. We normally use the symbol U...

    Asked by rishabh050996 on via web

  • Math
    Calculus is useful in engineering and construction. However, if you are not involved in one of those fields you may not use it regularly. However, calculus is great training for the mind. It...

    Asked by shaznl1 on via web

    4 educator answers.

  • Math
    ln (x+2) - ln (3x+1) = 4 We know that ln a - ln b = ln a/b ==> ln (x+2)/(3x+1) = 4 ==> (x+2)/(3x+1) = e^4 ==> x+2 = (3x+1)*e^4 ==> x+2 = 3(e^4)x + 3^4 ==> 3(e^4)x - x = e^4 - 2...

    Asked by damdoomdima on via web

    1 educator answer.

  • Math
    The formula for the circumference of a circle is C = ПD (circumference = pi times the diameter). The diameter is two times the radius. Therefore, if you have the radius, C = 2 ПR (twice the...

    Asked by luv2snowboard on via web

    1 educator answer.

  • Math
    If we're speaking about mathematical functions, then this kind of function can be mono-variable or multi-variables and can or cannot have parameters. f(x1,x2,x3...xn)=a, is a multi-variable...

    Asked by uoop on via web

  • Math
    f(x)=3x-4 g(x)=x+2f(x)-g(x)=3x-4-x-2Gathering the terms in x together and the free ones together, the result will be:f(x)-g(x)= (3x-x)+(-4-2)=2x-6

    Asked by zigtozag on via web

  • Calculus
    We have to find Int [1/ (1 + 4x^2) dx]. First substitute u = 2x => du /dx = 2 => du /2 = dx Now Int [1/ (1 + 4x^2) dx] => Int [(1/2)*(1/ (1+u^2) du] => (1/2)*Int [1/ (1 + u^2) du] Now...

    Asked by wondergirl on via web

    1 educator answer.

  • Math
    25% of 90 is what number? .25 times 90 equals 22.57% of 80 is what number? .07(80) = 5.6N% of 3.8 is 38? n%(3.8) = 38; n= 38 divided by 3.8 ; n = 10%70.6 is what percent of 635.4; 70.6=...

    Asked by maganda123 on via web

    1 educator answer.

  • Math
    This is proportional math.1760 yards = 1 mileX yards = .75 mileWe agree that 3/4 is equal to .75? So X is then number we are missing? With proportions, you cross multiply, and then divide by...

    Asked by zero0master on via web

    1 educator answer.

  • Math
    x^3-2x^2-x+2 = 0 Solution...... x^2(x-2)-1(x-2) = 0 =>(x-2)(x^2-1) = 0 =>(x-2)(x+1)(x-1) = 0 [x^2-1 = x^2-1^2 = (x+1)(x-1)] => x-2=0 I => x+1=0...

    Asked by macaronomy on via web

  • Math
    1) 10404 First we notice that the endign number (4) is even, then the number is divisible by 2: 10404= 2* 5202 Now also, 5202 is ending with an even number (2), then it is diisible by 2: 10404=...

    Asked by umaa on via web

    1 educator answer.

  • Math
    2 log 5 + 3 log x = 2 ==> log 5^2 + log x^3 = 2 We know that: log a + log b = log a*b ==> log 25*x^3 = 2 ==> 25x^3 = 10^2 ==> 25x^3 = 100 Divide by 25: ==> x^3 = 100/25 = 4 ==> x...

    Asked by damdoomdima on via web

    2 educator answers.

  • Math
    (secx)^4 = (1+tan^2 x) sec^2 Therefore Integral (sec^4 x) dx = Integral (1+tan^2 x) sec^2 x dx Let tan x=t , then sec^2 x dx = dt , for x=0, t=0 and for x=pi/4 , t=1, with this transformation,...

    Asked by bandgeek2339 on via web

  • Math
    We have to solve (x + 2)/6 = 3/(x - 1) for x. (x + 2)/6 = 3/(x - 1) => (x + 2)(x - 1) = 3*6 => x^2 + 2x - x - 2 = 18 => x^2 + x - 20 = 0 => x^2 + 5x - 4x - 20 = 0 => x(x + 5) - 4(x +...

    Asked by codyjackson on via web

    2 educator answers.

  • Math
    Initial velocity of the ball = 26.3m/s At the highest point the ball reaches 0 velocity because of the pull of the acceleration due to gravity g. So, the time taken to reach the highest point...

    Asked by jharry23 on via web

  • Math
    The probability is the chance that certain event may occur or not occur. To calculate the probability you need to figure out the possible outcomes and then determine the event's outcomes. For...

    Asked by blahxx123 on via web

    1 educator answer.

  • Math
    The angle addition postulate states that if a point is within an angle and you add the two angles that are made by drawing a line through the point that the total will equal the large angle. For...

    Asked by shades123 on via web

    1 educator answer.

  • Math
    f(x) = 2x g(x) = x + 3 First let us find (fog)(x) (fog)(x) = f(g(x) = f(x+3) = 2(x+3) = 2x + 6 ==> (fog)(x) = 2x + 6 Now let us find (gof)(x): (gof)(x)...

    Asked by seedrasoso on via web

    1 educator answer.

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