Description : "Ravi is 10 years older than Rehan. Five years ago, one-seventh of Ravi's age was equal to one-fifth of Rehan's age." If Rehan's age be 'x' years and Ravi's age be 'y' years, which of the following pair of linear equations is ... y = 10 and 7x + 5y - 10 = 0 (d) x - y = -10 and 7y - 5x + 10 = 0
Last Answer : (b) y -x = 10 and 5y -7x + 10 = 0
Description : Find the 7th term in the expansion of `(5x-(1)/(7y))^(9)`
Last Answer : Find the 7th term in the expansion of `(5x-(1)/(7y))^(9)`
Description : One equation of a pair of dependent linear equations is -5x+7y=2 .The second equation can be (a)10x-14y-4=0 (b) -10x+14y+4=0 (c) 10x-14y-4=0 (d) -10x+14y-4=0
Last Answer : (d) -10x+14y-4=0
Description : If 3x -7y = 10 and xy = -1, find the value of 9x2 + 49y2 -Maths 9th
Last Answer : answer:
Description : Which of the following points lies on the same side as the origin, with reference to the line 3x+7y=2 ? (A) (3, 0) (B) (1, 0) (C) (0.5, 0.5) (D) (0.5, 0)
Last Answer : (D) (0.5, 0) Explanation: If (0.5, 0) is substituted in the equation, we get 1.5 which is less than 2, then it lies on the same side as that of the origin.
Description : The point (2,3) lies on the graph of the linear equation 3x - (a -1)y =2a -1. If the same point also lies on the graph of the linear equation 5x + (1-2a)y = 3b, then find the value of b. -Maths 9th
Last Answer : Given, point (2,3) lies on the line. So, the point (2, 3) is the solution of 3x - (a -1) y = 2a - 1 On putting x = 2 and y = 3 in given solution. ∴ 3 2 - (a-1) 3 = 2a - 1 ⇒ 6 - 3a + 3 = 2a - 1 ⇒ - 3a ... 2 2) 3 = 3b ⇒ 10 - 9 = 3b ⇒ 1 = 3b ⇒ 1 / 3 = b Hence, the value of b is 1 / 3.
Description : If ` x : y = 3:5`, find the duplicate ratio of `(3x+y) : (5x-y)`.
Last Answer : If ` x : y = 3:5`, find the duplicate ratio of `(3x+y) : (5x-y)`. A. ` 49 : 25` B. ` 25 : 9` C. ` 36 : 25` D. ` 49 : 36`
Description : A pair of linear equations which has a unique solution x = 2, y = -3 is (a) x + y = -1 ; 2x – 3y = -5 (b) 2x + 5y = -11 ; 4x + 10y = -22(c) 2x – y = 1 ; 3x + 2y = 0 (d) x – 4y – 14 = 0 ;5x – y – 13 = 0
Last Answer : (d) x – 4y – 14 = 0 ;5x – y – 13 = 0
Description : If the expressions (px^3 + 3x^2 – 3) and (2x^3 – 5x + p) when divided by (x – 4) leave the same remainder, then what is the value of p ? -Maths 9th
Last Answer : Given that the following polynomials leave the same remainder when divided by (x - 4) : We are to find the value of a. Remainder theorem: When (x - b) divides a polynomial p(x), then the remainder is p(b). So, from (i) and (ii), we get Thus, the required value of a is 1.
Description : `" if " f(x) ={ underset( 5x" "2 le x le 3) (3x+ 4,0 le x le 2),` then `int_(0)^(3) f(x) dx=?`
Last Answer : `" if " f(x) ={ underset( 5x" "2 le x le 3) (3x+ 4,0 le x le 2),` then `int_(0)^(3) f(x) dx=?` A. `(53)/(2)` B. `(55)/(2)` C. `(57)/(2)` D.
Description : `"if "f(x) ={ underset(5x, 1,2 le x le 3)(3x+4, 0 le x le 2}},` then evaluate `int_(0)^(3) f(x) dx.`
Last Answer : `"if "f(x) ={ underset(5x, 1,2 le x le 3)(3x+4, 0 le x le 2}},` then evaluate `int_(0)^(3) f(x) dx.`
Description : Let f and g be the functions from the set of integers to the set integers defined by f(x) = 2x + 3 and g(x) = 3x + 2 Then the composition of f and g and g and f is given as (A) 6x + 7, 6x + 11 (B) 6x + 11, 6x + 7 (C) 5x + 5, 5x + 5 (D) None of the above
Last Answer : (A) 6x + 7, 6x + 11 Explanation: fog(x)=f(g(x))=f(3x+2)=2(3x+2)+3=6x+7 gof(x)=g(f(x))=g(2x+3)=3(2x+3)+2=6x+11
Description : Complete set of solution of inequation `sqrt(3x^2+5x+7)-sqrt(3x^2+5x+2)gt1` is `(-a,-b)uu(-c,-d)` then find the value of a+b+c+d
Last Answer : Complete set of solution of inequation `sqrt(3x^2+5x+7)-sqrt(3x^2+5x+2)gt1` is `(-a,-b)uu(-c,-d)` then find the ... +c+d A. `4` B. `3` C. `2` D. `1`
Description : What must be added to 2x(square) - 5x + 6 to get x(cube) - 3x(square) + 3x - 5? -Maths 9th
Last Answer : Solution :-
Description : What is (x^2-3x+2)/(x^2-5x +6)÷(x^2-5x+4)/(x^2-7x+12) equal to? -Maths 9th
Description : Evaluate: `lim_(x rarr 1) [(x^(2)+3x+2)/(x^(2)-5x+3)]`.
Last Answer : Evaluate: `lim_(x rarr 1) [(x^(2)+3x+2)/(x^(2)-5x+3)]`.
Description : Solve the following in equalities `(i) |x+7| gt 5` `(ii) |x+3| lt 10` `(iii) (x+2) lt |x^(2)+3x+5|``(iv) |(2x-1)/(x-1)| gt 2` `(v) |x-6| le x^(2)-5x+9
Last Answer : Solve the following in equalities `(i) |x+7| gt 5` `(ii) |x+3| lt 10` `(iii) (x+2) lt |x^(2)+3x+5|``(iv) ... -5) lt 0` `(viii) |x-1|+|x-2|+|x-3| le 6`
Description : What is the value of x in the equation 0.25 open brackets 3x - 4 close brackets - 0.5x equals 2.75 A. 27 B. 15 C. 7 D. 3?
Last Answer : Work it through, doing the same thing to both sides:0.25(3x - 4) - 0.5x = 2.75[Multiply both sides by 4]→ 4 (0.25(3x - 4) - 0.5x) = 4 (2.75)→ 4 0.25(3x - 4) - 4 0.5x = 4 2.75→ 3x - 4 - 2x = ... 11[Add 4 to both sides]→ (x - 4) + 4 = (11) + 4→ x - 4 + 4 = 11 + 4→ x = 15→ Solution is B. 15
Description : Give the geometric interpretations of 5x + 3 = 3x – 7 as an equation (i) in one variable (ii) in two variables. -Maths 9th
Description : Solve : `(5x -2)/(3) + (4x+3)/(2) = (3x+19)/(2)`
Last Answer : Solve : `(5x -2)/(3) + (4x+3)/(2) = (3x+19)/(2)`
Description : What is 3x plus 2a plus 5x plus 4a?
Last Answer : 58
Description : What is 5x minus (negative 3x)?
Last Answer : 8x
Description : What is 1 plus 2(3x plus 4) plus 5x?
Last Answer : It is equivalent to 11x+9 when simplified
Description : What is 5x+2+3x?
Last Answer : If you mean: 5x(3x+2)-8x-7x then the expression can be simplified to 15x^2 -5x
Description : if `x:y=2:5` then `(10x+3y):(5x+2y)` is _____.
Last Answer : if `x:y=2:5` then `(10x+3y):(5x+2y)` is _____.
Description : What is an equivalent expression to 8 plus 7y plus 2x plus 4y plus 4?
Last Answer : Feel Free to Answer
Description : What is 13x plus 2y -10x -7y?
Last Answer : Bbbbf
Description : For a function given by F = 4x i + 7y j +z k, the divergence theorem evaluates to which of the values given, if the surface considered is a cone of radius 1/2π m and height 4π 2 m. a) 1 b) 2 c) 3 d) 4
Last Answer : b) 2
Description : what- shaneese is buying peanuts and cashews. she has $12 to spend. peanuts cost $3 per pound and cashews cost $4 per pound. if she buys x pounds of peanuts and y pounds of cashews, then the equation that represents the amount of each is 3x + 4y =12?
Last Answer : what is the x- intercept
Description : what- Shaneese is buying peanuts and cashews. She has $12 to spend. Peanuts cost $3 per pound and cashews cost $4 per pound. If she buys x pounds of peanuts and y pounds of cashews, then the equation that represents the amount of each is 3x + 4y = 12.?
Last Answer : What is the x-intercept?
Description : If the function `y = ae^(x) + bx^(2)+3x` is maximum at x = 0 and minimum at x = - 3, then find the values of a and b.
Last Answer : If the function `y = ae^(x) + bx^(2)+3x` is maximum at x = 0 and minimum at x = - 3, then find the values of a and b.
Description : if x:y=5:7 then find `(3x+4y):(x+2y)` .
Last Answer : if x:y=5:7 then find `(3x+4y):(x+2y)` .
Description : X persons can complete a work in Y days. Then, 3X persons can complete the same work in ……….. Days and `(x)/(3)` persons can complete the same work in
Last Answer : X persons can complete a work in Y days. Then, 3X persons can complete the same work in .. Days ... can complete the same work in .. Days.
Description : If a + b = 1 ,and the ordered pair (a, b) satisfies the equation 2x + y = , then it also satisfies (a) 2x + y (b) 3x + 4y = 3 (c) x + 2y = (d) 2x + 4y =
Last Answer : (c) x + 2y =
Description : If (x, y) is a solution of the following pair of linear equations in two variables, then the value of expression (√ is: x + 2y = 4 and 3x - y = 5 (a) 2 (b) 3 (c) 4 (d) √2
Last Answer : (a) 2
Description : If a function is described by F = (3x + z, y 2 − sin x 2 z, xz + ye x5 ), then the divergence theorem value in the region 0
Last Answer : c) 39
Description : Find the value of k for 5x +2ky =3k, if x =1 and y =1 is its solution. -Maths 9th
Last Answer : Given, equation is 5x + 2ky = 3k. On putting x =1 and y =1 in this equation, we get 5(1) + 2k(1) =3k ⇒ 5 + 2k =3k ⇒ 5 = 3k - 2k ⇒ k = 5 Hence, required value of k is 5.
Description : If x = 0 and y = k is a solution of the equation 5x - 3 y = 0, find the value of k. -Maths 9th
Description : Find the equation of normal of the curve `2y= 7x - 5x^(2)` at those points at which the curve intersects the line x = y.
Last Answer : Find the equation of normal of the curve `2y= 7x - 5x^(2)` at those points at which the curve intersects the line x = y.
Description : Find the equation of the normal to the curve `y = 5x + x^2` which makes an angle `45^@` with x axis.
Last Answer : Find the equation of the normal to the curve `y = 5x + x^2` which makes an angle `45^@` with x axis.
Description : What is the perpendicular bisector equation of the line y equals 5x plus 10 spanning the parabola y equals x squared plus 4?
Last Answer : If: y = 5x +10 and y = x^2 +4Then: x^2 +4 = 5x +10Transposing terms: x^2 -5x -6 = 0Factorizing the above: (x-6)(X+1) = 0 meaning x = 6 or x =-1Therefore by substitution endpoints of the line are ... .5 = -1/5(x-2.25) => 5y= -x+114.75Perpendicular bisector equation in its general form: x+5y-114.75= 0
Description : H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S ... by, y = 5x + 0.001 is (A) 2.0 (B) 1.56 (C) 1.0
Last Answer : (A) 2.0
Description : If both x – 2 and x -(1/2) are factors of px2+ 5x+r, then show that p = r. -Maths 9th
Last Answer : Show that p = r.
Description : If x^3 + 5x^2 + 10k leaves remainder – 2x when divided by x^2 + 2, then what is the value of k ? -Maths 9th
Last Answer : x3+5x2+10k =(x2+2)(x+5)+10k−2x−10 ⇒10k−2x−10=−2x ⇒10k−10=0 or k=1.
Description : If both (x – 2) and (x – 1/2) are factors of px^2 + 5x + r, then: -Maths 9th
Description : what- choose the property of equality that justifies the step. prove: if z- 1= 5x+ 1 and x= 2y, then z +10y +2?
Last Answer : addition