Description : The pair of equations ax+2y=7 and 3x+by=16 represent parallel lines if (a)a=b (b)3a=2b (c)ab=6 (d)2a=3b
Last Answer : (c)ab=6
Description : If `(a)/(b)=(c)/(d)=(e)/(f)=(3)/(4)`, then what is the value of `(3a-4c-e)/(3b-4d-f)`?
Last Answer : If `(a)/(b)=(c)/(d)=(e)/(f)=(3)/(4)`, then what is the value of `(3a-4c-e)/(3b-4d-f)`?
Description : If ` a/b = c/d = e/f = 2/5`, then ` (3a+4c+9e)/(3b+4d+9f) = ` _________ .
Last Answer : If ` a/b = c/d = e/f = 2/5`, then ` (3a+4c+9e)/(3b+4d+9f) = ` _________ .
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)/(2a-3b)=(y)/(3b-4c)=(z)/(4c-2a)`, then find the value of `x^(3)+y^(3)+z^(3)`.
Last Answer : If `(x)/(2a-3b)=(y)/(3b-4c)=(z)/(4c-2a)`, then find the value of `x^(3)+y^(3)+z^(3)`.
Description : 3a plus 3b plus ax plus bx?
Last Answer : 6a square plus b square
Description : If the mean of P, Q,R is A and PQ + QR + RP =0, then the mean of p^2,Q^2,R^2 is. A) 2A^2 B) 4A^2 C) A^2 D) 3A^2
Last Answer : D) We have (P + Q + R)/3 = A P+Q+R = 3A (P+Q+R)^2 = 9A^2 P^2+Q^2+R^2 + 2 (PQ + QR + PR) = 9A^2 P^2+Q^2+R^2 = 9A^2 Required mean = (P^2+Q^2+R^2)/3 = 9A^2/3= 3A^2
Description : Find the following products: (i) (3x + 2y + 2z) (9x2 + 4y2 + 4z2 – 6xy – 4yz – 6zx) (ii) (4x -3y + 2z) (16x2 + 9y2+ 4z2 + 12xy + 6yz – 8zx) (iii) (2a – 3b – 2c) (4a2 + 9b2 + 4c2 + 6ab – 6bc + 4ca) (iv) (3x -4y + 5z) (9x2 + 16y2 + 25z2 + 12xy- 15zx + 20yz) -Maths 9th
Last Answer : answer:
Description : What is the number of terms in 2a + 3b is?
Last Answer : 5
Description : Is 8a-3b-(2a-4b) and 6a plus b equivalent?
Last Answer : Need answer
Description : What is 3a-1-a-2a plus 3?
Last Answer : It is then 2 when all terms are added together
Description : The maximum magnitude of shear stress due to shear force F on a rectangular section of area A at the neutral axis, is (A) F/A (B) F/2A (C) 3F/2A (D) 2F/3A
Last Answer : (C) 3F/2A
Description : If A=3B=5C, then A:B:C=_______.
Last Answer : If A=3B=5C, then A:B:C=_______.
Description : If `(3a+4b):(3a-4b)=(3c+8d):(3c-8d),` then which of the following is true?
Last Answer : If `(3a+4b):(3a-4b)=(3c+8d):(3c-8d),` then which of the following is true? A. ad=bc B. 2ad=bc C. 2ab=cd D. ab=cd
Description : If (3a+2b) : (5a+7b) = 1:2 , then find a : b.
Last Answer : If (3a+2b) : (5a+7b) = 1:2 , then find a : b.
Description : The minimum value of the expression ((3b+4c)/a)+((4c+a)/3b)+((a+3b)/4c) -Maths 9th
Description : What is a x 3b?
Last Answer : Ava and Becca are collecting canned goods. Ava collected 3/4 of a box of canned goods. Becca collected five times as much as Ava did. How many boxes of canned goods did Becca collect.
Description : For a gaseous reaction, `A(g)+3B(g)to3C(g)+3D(g),DeltaU` is 17 kcal at `27^(@)C`. Assuming `R=2cal" "K^(-1)mol^(-1)`, the value of `DeltaH` for the ab
Last Answer : For a gaseous reaction, `A(g)+3B(g)to3C(g)+3D(g),DeltaU` is 17 kcal at `27^(@)C`. Assuming `R=2cal" " ... Kcal B. 18.2 Kcal C. 20.0 Kcal D. 16.4 Kcal
Description : If the dimensions of a rectangle are a plus 3 b a plus 3b and a and minus 3 b a and minus3b what is the area of the rectangle in terms of a a and b b?
Last Answer : It is a2 - 9b2.
Description : What is the simplify of -2b plus 6 plus 3b-2?
Last Answer : It is: b+4 when simplified
Description : What is Army reenlistment code RE-3 or 3B?
Description : What is 3b - c?
Last Answer : They are 2 terms of an algebraic expression in the form of: 3b-c
Description : The fractional volume change of the system for the isothermal gas phase reaction, A → 3B, between no conversion and complete conversion is (A) 0.5 (B) 1 (C) 2 (D) 3
Last Answer : (C) 2
Description : A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is (A) 0.33 (B) 0.5 (C) 1 (D) Data insufficient, can't be predicted
Last Answer : (C) 1
Description : Pure A in gas phase enters a reactor 50% of this A is converted to Bthrough the reaction, A → 3B. Mole fraction of A in the exit stream is (A) 1/2 (B) 1/3 (C) 1/4 (D) 1/5
Last Answer : (B) 1/3
Description : A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is (A) 3S/bh (B) 4S/bh (C) 4b/Sh (D) 3b/bS
Last Answer : (A) 3S/bh
Description : Indian and Russian scientists successfully test-fired a supersonic cruise missile named (1) GSAT – 1 (2) GSLV (3) Brahmos (4) INSAT –3B
Last Answer : Brahmos
Description : If x + 2a is a factor of a5 -4a2x3 +2x + 2a +3, then find the value of a. -Maths 9th
Last Answer : Let p(x) = a5 -4a2x3 +2x + 2a +3 Since, x + 2a is a factor of p(x), then put p(-2a) = 0 (-2a)5 – 4a2 (-2a)3 + 2(-2a) + 2a + 3 = 0 ⇒ -32a5 + 32a5 -4a + 2a+ 3 = 0 ⇒ -2a + 3 = 0 2a =3 a = 3/2. Hence, the value of a is 3/2.
Description : If a = log12m and b = log18m, then (a-2b)/(b-2a) equals -Maths 9th
Last Answer : (a) log32\(rac{a-2b}{b-2a}\) = \(rac{ ext{log}_{12}\,m-\,2 ext{log}_{18}\,m}{ ext{log}_{18}\,m-\,2 ext{log}_{12}\,m}\)
Description : If a + b + c = 0, then what is the value of a^4 + b^4 + c^4 – 2a^2b^2 – 2b^2c^2 – 2c^2a^2 ? -Maths 9th
Description : The adjacent sides of a parallelogram are 2a and a. If the angle between them is 60°, then one of the diagonals of the parallelogram is -Maths 9th
Description : If (x^4 – 2x^2y^2 + y^2)^(a –1) = (x – y)^2a (x + y) ^–2, then the value of a is -Maths 9th
Description : If ` (a^(3)+2ab^(2))/(2a^(2)b+b^(3)) = (123)/(136)` , then find the value of ` a : b `.
Last Answer : If ` (a^(3)+2ab^(2))/(2a^(2)b+b^(3)) = (123)/(136)` , then find the value of ` a : b `.
Description : A silver wire of radius `0.1 cm` carries a current of 2A. If the charge density in silver is `5.86xx10^(28)m^(-3)`, then the drif velocity is
Last Answer : A silver wire of radius `0.1 cm` carries a current of 2A. If the charge density in silver is `5.86xx10^(28)m^(- ... -4)ms^(-1)` D. `7xx10^(-4)ms^(-1)`
Description : The gas phase reaction 2A ⇌ B is carried out in an isothermal plug flow reactor. The feed consists of 80 mole % A and 20 mole % inerts. If the conversion of A at the reactor exit is 50%, then CA/CA0 at the outlet of the reactor is (A) 2/3 (B) 5/8 (C) 1/3 (D) 3/8
Last Answer : (B) 5/8
Description : A reaction between the substances A and B has been found to give the following data: 3A + 2B -----> 2C + D?
Last Answer : My reaction is “HUH??”
Description : How do I grow hollyhocks in zone 3a?
Last Answer : You can take seeds from the flower after it dies off and replant in the spring when the danger of frost has passed.
Description : Expand the following : (3a-2b)3 -Maths 9th
Last Answer : Expand the following
Description : The polynomial p{x = x4 -2x3 + 3x2 -ax+3a-7 when divided by x+1 leaves the remainder 19. -Maths 9th
Last Answer : p(x) is divided by x+ 2 =
Description : Factorize a^4+3a^2+4 -Maths 9th
Last Answer : NEED ANSWER
Last Answer : This answer was deleted by our moderators...
Description : The minimum value of the sum of real numbers a^(–5), a^(–4), 3a^(–3), 1, a^8 and a^10 with a > 0 is -Maths 9th
Description : Prove that (sin A + sin 3A + sin 5A + sin7 A)/(Cos A + Cos3 A + cos5 A + cos7 A) = tan 4A. -Maths 9th
Description : When a + b + c + 3a^(1/3) b^(2/3) + 3a(2/3) b^(1/3) is divided by a^(1/3) + b^(1/3) + c^(1/3), what is the remainder ? -Maths 9th
Description : Write the result after applyin componendo and dividendo to `3a^(2)+2b^(2):3a^(2)-2b^(2): :3c^(2)+2d^(2):3c^(2)-2d^(2)`.
Last Answer : Write the result after applyin componendo and dividendo to `3a^(2)+2b^(2):3a^(2)-2b^(2): :3c^(2)+2d^(2):3c^(2)-2d^(2)`.
Description : What is 3a squared when a equals to -3?
Last Answer : 6