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Raj

Questions (360)

There is a graph of y=1/sqrtx.Show that the area of the region between line and curve at x=1 and x=3 is 3-(5sqrt3/3).
1. 1 answer
2. 354 views
Find the area under the curve y=5/x^2 between x=-3 and x=-1.
1. 1 answer
2. 350 views
Find the area enclosed between y=8 & y=3x^8+5
1. 1 answer
2. 272 views
Find the area enclosed by y=6x^2 on the right side of x-axis with curve from origin to (5,0)
1. 1 answer
2. 386 views
H2+I2 ⇌2HIIF we have graph of no of moles of HI against time then how can we know at what rate No. of moles H2 levels off with
1. 1 answer
2. 382 views
Gaseous hydrogen and gaseous iodine react together to form hydrogen iodide.H2 + I2 2HI a The graph shows how the amount of
1. 1 answer
2. 865 views
The equilibrium between three substances, a, B and c is shown below.A(g) + B(g) C(g) Initially there were 0.1 mol of a and 0.2
1. 1 answer
2. 2,982 views
Initially there were 1.0mol of a and 0.2 mol of b in the reaction mixture.a and b reacted together to produce an equilibrium
1. 3 answers
2. 1,572 views
A circular cylinder is to fit inside a sphere of radius 10cm.Calculate the maximum posiible volume of the cylinder.
1. 1 answer
2. 1,568 views
Find the coordinates of the stationary points on the curve y= x+4/x determine the nature of the turning points.Find also the set
1. 1 answer
2. 941 views
A rectangular sheet of metal measures 50cm by 40cm .Equal squares of side x cm are cut from each corner and discarded.The sheet
1. 3 answers
2. 3,788 views
One side of a rectangular pen is formed by a hedge. The other three sides are made using fencing.The length of the rectangle is
1. 1 answer
2. 1,011 views
A open cylindrical wastepaper bin, of radius r cm and volume V cm^3, is to have a surface area of 5000cm^3.a.Show that V=1/2
1. 1 answer
2. 1,289 views
Q. The sum of the two shortest sides of a right-angles triangle is 18cm.Calculatea.the least possible length of the hypotenuse
1. 1 answer
2. 823 views
Q.a.Find the stationary points on the graph of y=12x+3x^2-2x^3 and sketch the curve.b.How does your sketch show that the
1. 2 answers
2. 1,053 views
How to get y-intercept from graph.
1. 1 answer
2. 337 views
What scale should I take for readings like (6.38,12.7,19.1,25.53,31.91,38.29) on x-axis and (1.27,1.25,1.21,1.18,1.14,1.12) on
1. 0 answers
2. 328 views
What scaling can I take on A4 size graph for readings through experiment (16,24,47,94,141,188) on x-axis and
1. 1 answer
2. 311 views
Can we write derivative of 5(2x-3)^-3 directly 5*-3(2x-3)^-3-1 *coefficient of x, instead of using chain rule.In what type of
1. 3 answers
2. 389 views
Find f''(x) for f(x)=15/(2x+1)^1/3
1. 1 answer
2. 264 views
What scale should I take for (16,24,47,94,141,188)on x-axis and (15.6,23.1,42.6,82.6,116.3,149.3) on y-axis in a4 size graph?
1. 1 answer
2. 290 views
Four fair sided dice, each with faces marked 1,2,3,4,5,6, are thrown on 7 occasions.Find the probability that the numbers shown
1. 1 answer
2. 2,759 views
How to distinguish probability question with conditional probability and another question of probability and combinations?
1. 1 answer
2. 351 views
A certain disease is present in 1 in 200 of the population.In a mass screening program quick test for the disease is used, but
1. 2 answers
2. 1,459 views
A six side dice is biased so that, when it is thrown, the probability of obtaining a score of 6 is 5/9 and of obtaining scores
1. 4 answers
2. 530 views
How to identify condition in conditional probability statement?
1. 1 answer
2. 473 views
How can I make probability questions easy?I feel it difficult.My syllabus includes mutually exclusive events, dependent and
1. 0 answers
2. 362 views
A certain disease is present in 1 in 200 of the population.In a mass screening program quick test for the disease is used, but
1. 2 answers
2. 874 views
Ferrochrome is an alloy of iron and chromium. Ferrochrome can be dissolved in dilute sulfuricacid to produce a mixture of FeSO4
1. 1 answer
2. 1,567 views
tom is marking the locations of active volcanoes on a world map. Explain how the locations of the valcanoes are related to
1. 1 answer
2. 595 views
What is tensile strength?
1. 1 answer
2. 416 views
A class test consists of 4 Algebra questions,W ,X,Y and Z, and 4 Geometry questions,A,B,C and D.The teacher decides that the
1. 1 answer
2. 1,146 views
a/A class test consists of 4 Algebra questions,W ,X,Y and Z, and 3 Geometry questions,A,B,C and D.The teacher decides that the
1. 5 answers
2. 988 views
aA class test consists of 4 Algebra questions,W ,X,Y and Z, and 3 Geometry questions,A,B,C and D.The teacher decides that the
1. 0 answers
2. 610 views
A class test consists of 4 Algebra questions,W ,X,Y and Z, and 3 Geometry questions,A,B,C and D.The teacher decides that the
1. 0 answers
2. 704 views
A class test consists of 4 Algebra questions,W ,X,Y and Z
1. 1 answer
2. 420 views
A squad of 20 boys, which includes 2 sets of twins , is available for selection for a cricket team of 11 players. Calculate the
1. 1 answer
2. 1,502 views
A squad of 20 boys, which includes 2 sets of twins , is available for selection for a cricket team of 11 players. Calculate the
1. 0 answers
2. 654 views
There are twenty numbered balls in a bag.Two of the balls are numbered 0,six are numbered 1, five are numbered 2 and seven are
1. 1 answer
2. 1,092 views
There are twenty numbered balls in a bag.Two of the balls are numbered 0,six are numbered 1, five are numbered 2 and seven are
1. 1 answer
2. 1,572 views
1.Issam has 11 different CDs of which 6 are pop music , 3 are jazz and 2 are classical. Issam makes a selection of 2 pop music
1. 3 answers
2. 3,228 views
1.A group of five people consists of two women.Alice,Betty, and three men, Carl,David and Ed. Find the number of ways in which
1. 1 answer
2. 1,048 views
How many 5 digits numbers less than 60000 and even can be formed using the digits 1,2,4,5,7 and 9
1. 1 answer
2. 1,285 views
How to know a given question is of permutation or combination or both combined?
1. 1 answer
2. 375 views
An examination consists of a section A, containing 10 short questions, and a section B, containing 5 long questions. Candidates
1. 1 answer
2. 2,059 views
Point A having coordinates (3,-7) lies on the curve y=f(X). State the coordinates of A when y=f(X) is transformed to
1. 0 answers
2. 474 views
The graph of y=x^2-2x+1 is translated by the vector (2 3).The graph so obtained is reflected in the x-axis and finally it is
1. 1 answer
2. 1,985 views
The graph of y=ax^2+bx+c is translated by the vector (4 5).The resulting graph is y=2x^2-13x+21.Find the values of a,b and c.
1. 2 answers
2. 1,037 views
There is a graph with maximum point (-2,5) and an asymptote y=1.Sketch the curve with equation y=f(x)+2?Does the asymptote
1. 1 answer
2. 435 views
Point A having coordintes (3,-7) lies on the curve y=f(x). State the coordinates of the image of A when the graph of y=f(x) is
1. 0 answers
2. 697 views
Point A having coordintes (3,-7) lies on the curve y=f(x). State the coordinates of the image of A when the graph of y=f(x) is
1. 0 answers
2. 456 views
Describe the single transformation that maps the graph of y=3-(1/4*x*2) onto the graph y=(1/2*x^2)-6.
1. 0 answers
2. 399 views
The graph of y=ax^2+bx+c is translated by the vector (4 5). The resulting graph is y=2x^2-13x+21.Find the values of a,b and c
1. 0 answers
2. 513 views
There is a graph with maximum point (-2,5) and an asymptote y=1.Sketch the curve with equation y=f(x)+2?
1. 0 answers
2. 386 views
There is a curve with equation y=3/x, xis not equal 0. Sketch the curve with equation y=3/(x+2), xis not equal to -2, showing
1. 3 answers
2. 430 views
the graph of curve y=f(x) has point P(2,1) lies on the curve.On the graph y=2f(x+3) label the image of the point P, giving its
1. 1 answer
2. 751 views
the graph of curve y=f(x) has point P(2,1) lies on the curve.On the graph y=2f(x+3) label the image of the point P, giving its
1. 2 answers
2. 479 views
The curve y = (x^2-4) is translated by(2 0). Write down an equation for the translated graph.Explain
1. 4 answers
2. 3,348 views
The point P(5,4) is on the curve y=f(x). State the coordination of the image of P when the graph of y=f(x) is transformed to the
1. 1 answer
2. 744 views
4. a metal cylinder of height 4.5 cm and base area 24 cm2.metal cylinder 4.5 cm The density of the metal is 7900 kg m–3. (a)
1. 0 answers
2. 476 views
4. a metal cylinder of height 4.5 cm and base area 24 cm2.metal cylinder 4.5 cm The density of the metal is 7900 kg m–3. (a)
1. 0 answers
2. 566 views
In a sector COD of a circle, centre O , in which angle COD =4/3 radians. The points A and B lie on the OD and OC respectively,
1. 2 answers
2. 1,470 views
There is a function y=f(x) for -4<=x <=4 having two turning points at A(-2,21) AND B (2,-11)Sketch on different different
1. 1 answer
2. 421 views
f(x)-x^2-4x+k for domain x>=pState the smallest value of p for which f is one-one.
1. 1 answer
2. 659 views
f(x)=x^2-4x+k for x>=pState the range of f in term of k.
1. 1 answer
2. 279 views
f(x)=2x+1Sketch in a single diagram the graphs of y=f(x) and y=f^-1(x), making clear relationship between the graphs.
1. 1 answer
2. 736 views
How to sketch the graph of y=f^-1(x)
1. 1 answer
2. 558 views
The function g is defined by g(x)=2x^2-12x+13 for x>=4.Expalin why g has an inverse.
1. 2 answers
2. 1,280 views
Functions f and g are defined byf(x)=4x-2k g(x)=9/(2-x) i.Find the values of k for which the equation fg(x)=x has two equal
1. 1 answer
2. 3,641 views
What is meant by centre of positive and negative charge do not coincide each other?
1. 1 answer
2. 339 views
AnswerA skier is pulled up a slope at constant speed. The tension in the wire pulls the skier with a force of 400N that acts at
1. 2 answers
2. 823 views
Please answer I have solved the numrical part.A skier is pulled up a slope at constant speed. The tension in the wire pulls the
1. 0 answers
2. 557 views
A skier is pulled up a slope at constant speed. The tension in the wire pulls the skier with a force of 400N that acts at 40
1. 1 answer
2. 1,118 views
The point P is reflection of (-2,10) on the line 4x-3y=12. Find the coordinates of P.
1. 2 answers
2. 5,360 views
C(4,10) and D(3,5) which is CD is intersected by BE
1. 2 answers
2. 370 views
Find the area of triangle having vertices A(-1,5) , B(-2,6) and C(3,5)
1. 1 answer
2. 542 views
Find the area of quadrilateral ABCD having vertices A(-1,5) , B(-2,6) , C(4,10) and D(3,5)
1. 4 answers
2. 1,039 views
What is resistive force?
1. 1 answer
2. 400 views
Define non-zero intercept?
1. 1 answer
2. 2,725 views
How is speed time graph related to resultant force acting on a body?
1. 1 answer
2. 1,121 views
Pegs are to be placed in the four holes shown, one in each hole. The pegs come in different colours and pegs of the same colour
1. 1 answer
2. 2,488 views
A small aeroplane has 14 seats for passengers. The seats are arranged in 4 rows of 3 seats and a backrow of 2 seats . 12
1. 1 answer
2. 2,136 views
This question is about the motion of a firework rocket.A firework rocket is fired vertically upwards from the ground. It
1. 3 answers
2. 1,287 views
find the number of ways of choosing a school team of 5 pupils from 6 boys and 8 girls if 3 of the boys are cousins are either on
1. 2 answers
2. 4,114 views
Nine cards, each of a different colour, are to be arranged in a line.The 9 cards include a pink card and a green card. Consider
1. 0 answers
2. 1,004 views
Permutation and combinationA diagonal of a polygon is defined to be a line joining any two non-adjacent vertices. 1.Show that
1. 1 answer
2. 2,664 views
9 cards each of different colors include a pink card and a green card.1.How many different arrangements do not have the pink
1. 1 answer
2. 664 views
A choir consists of 13 sapranos,12 altos,6 tenors, and 7 basses.A group consisting of 10 sapranos, 9 altos, 4 tenors and 7
1. 1 answer
2. 3,280 views
How many different selections of four letters from the 12 letters of the word REFRIGERATOR contain no Rs and two Es?
1. 4 answers
2. 1,468 views
Please answer i am confused what to plot in y axis and in x axis. I am getting the gradient for this question in negative
1. 2 answers
2. 613 views
Time is taken for 10 oscillations.d/cm T1/SEC T2/SEC T3/SEC T D/T 1 25.0 14.68 14.57 14.81 2 30.0 13.90 14.32 14.41 3 35.0 13.28
1. 1 answer
2. 367 views
In an A.P. having 100 terms. Its first term is 3, M=5n and Sm/Sn does not depend on n then find second term.
1. 3 answers
2. 529 views
x^y=y^x ; then find dy/dx
1. 1 answer
2. 435 views
Find percentage composition of K2SO4 in alum.
1. 2 answers
2. 482 views
Aunt Sally’s “New Orleans Most Famous Pralines” sells pralines costing $1.10 each to make. If Aunt Sally’s wants a 35%
1. 1 answer
2. 2,452 views
A spring-loaded toy uses a compressed spring to fire a marble out of atube. A force of 220 N compresses the spring by 0.14 m.
1. 2 answers
2. 1,361 views
Why does the reciprocal of a polynomial share the same points as the polynomial function at y = 1 and y = -1
1. 1 answer
2. 966 views
why can't man's follow the flight of a song
1. 1 answer
2. 423 views
Find the area of a path 1m wide,running breadth wise across a garden of length=30m and breadth=20m.
1. 1 answer
2. 912 views
A 150m long train is moving with uniform velocity of 45km/hr.The time taken by the train to cross a bridge of length 850 meters
1. 1 answer
2. 682 views

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