7304 + Interview Questions in MATHEMATICS IN CLASS 09 Page 46 InterviewSolution

2251.	Anyone here so plz talk with me
Answer» Hey Hru Hii ritika..... Hey friend jaan Hlo

Discussion

2252.	Every natural number is a whole number. Why ?
Answer» Every natural no. is a whole no. But every whole no. Is not a natural no. Because whole no. Consists 0,1,2,3,.......infinite...... but natural no. Consists only 1,2,3,.......infinite..... Every natural number is whole number because natural no. Start 1 to infinitive and whole no. Start 0 to infinitive so, every natural no. is a whole no. Every natural number is whole no...natural no starts from 1..to infinite..Whole no are collection all natural no ...but also with zero.(0) that is whole no. start from 0..to infinite.So here,the statement is correct that every natural no is a whole no also.. 1 possible The whole numbers are the numbers 0, 1, 2, 3, 4, and so on. Negative numbers are not considered "whole numbers." All natural numbers are whole numbers, but not all whole numbers are natural numbers since zero is a whole number but not a natural number.

Discussion

2253.	What is variable in maths and also define linear equations with eg.
Answer» VariableIn Maths, a variable is an alphabet or term that represents an unknown number. The variables are specially used in the case of algebraic expression or algebra. The variable is a quantity that can be changed or which is not fixed according to the mathematical operation performed. Usually, in algebra, we express an unknown number using the term ‘x’ and ‘y’. But this is not particular, and we can use any alphabet.\xa0Linear EquationsAn equation is said to be linear equation in two variables if it is written in the form of ax + by + c=0, where a, b & c are real numbers and the coefficients of x and y, i.e a and b respectively, are not equal to zero.For example, 10x+4y = 3 and -x+5y = 2 are linear equations in two variables.

Discussion

2254.	Draw a line L and take a point P which is not on L. From point P draw M parallel L.
Answer» Draw a line l. Draw a perpendicular to l at any point on l. On this perpendicular choose a point X, 4 cm away from l. Through X, draw a line m parallel to l.Answer:To construct:\xa0A line parallel to given line when perpendicular line is also given.Steps of construction:(a) Draw a line l and take a point P on it.(b) At point P, draw a perpendicular line n.(c) Take PX = 4 cm on line n.(d) At point X, again draw a perpendicular line m.It is the required construction.

Discussion

2255.	Subtract ___ - x² +10x - 5 from 5x - 10 .
Answer» 5x-10+10x+5-x²-_____-______-5x+5-x²Ans:-x²-5x+5 5x-10-(-x2+10x-5)=5x-10+x2-10x+5=X2+5x-10x-10+5=X2-5x-5 x²-5x-5 hope it is right

Discussion

2256.	X cube - 2 xsq1x +2
Answer» XXX is right answer

Discussion

2257.	Rout 5+rout 7whole square
Answer» 6 to the power x+1=216;then 3 to the power 2x+1=? Simplified form is\xa0Step-by-step explanation:Since we have given thatWe need to expand and then simplify:We will use the identity:\xa0so, here,So, our expression becomes,Hence, simplified form is\xa0

Discussion

2258.	Draw the graph 3x+2y=7
Answer»

Discussion

2259.	Solve √2-2×4√2=4
Answer» I don\'t know ?

Discussion

2260.	Find sum of 1-2√5 and 3+7√5.
Answer» 4+5√5 ( 1-2√5 ) + (3+7√5)=\xa01-2√5 + 3+7√5= 1+ 3\xa0-2√5+7√5= 4+ (-2+ 7)√5= 4 + 5√5 Km

Discussion

2261.	(ii) Justify the shape generated by PQRS with a geometrical principle.
Answer» quadrilateral

Discussion

2262.	Prove area of equilateral triangle by using heron formula
Answer» Please give thanks to the first answer^^^☆☆☆☆ As we know the equilateral triangle have all its sides equal. To find the\xa0area of equilateral triangle\xa0let us first find the semi perimeter of the equilateral triangle will be:s = (a+a+a)/2s=3a/2where a is the length of the side.Now, as per the heron’s formula, we know;Area=√s(s−a)(s−b)(s−c)\xa0Since, a = b = cTherefore,A =\xa0√[s(s-a)3]which is the required formula.

Discussion

2263.	In the figure ab and CD are opposite rays If angle C A D is equals to 135 degree find Angle B A D
Answer» Send answers

Discussion

2264.	Write the coefficient of x² in the expansion of (x-2)²
Answer» 1 1 1 (x-2)² = x2 - 2 (x)(2) + (2)2= x2 - 4x + 4So,\xa0the coefficient of x² in the expansion of (x-2)² is 1.\xa0 1

Discussion

2265.	Evaluate (25)⅓×(5)⅓
Answer» x^a × y^a = (xy)^a(25)⅓×(5)⅓= (25×5) 1/3= 125 1/3 = 53×1/3= 51 = 5 Gsid

Discussion

2266.	The perimeter of rhombus is 20 CM 18 diagonal is 8 cm then the area of rhombus is
Answer» 1 +1 is

Discussion

2267.	Divide x+3x² - 1 by 1+x
Answer» The perimeter of rhombus is 20cm one of its diagonal is 8 cm the area of the rhombus is

Discussion

2268.	Is parallelogram a trapezium
Answer» Nope No No

Discussion

2269.	I am Shubham Raj from lmc high school from Tikari and I was mainly interested in maths
Answer» Good How was your study going on in maths and all subject also

Discussion

2270.	Prove that: vertically opposite angles are equal.
Answer» let AB and CD be two lines intersecting at O . They lead to two pairs of vertically opposite angles, namely,(i) ∠ AOC and ∠ BOD (ii) ∠ AOD and ∠ BOC.We need to prove that ∠ AOC = ∠ BOD and ∠ AOD = ∠ BOC.Now, ray OA stands on line CD.Therefore, ∠ AOC + ∠ AOD = 180° (Linear pair axiom) ………..(1)We can write ∠ AOD + ∠ BOD = 180° (Linear pair axiom)……………(2)From (1) and (2), we can write∠ AOC + ∠ AOD = ∠ AOD + ∠ BODThis implies that ∠ AOC = ∠ BOD Therefore it is proved lines intersect each other then the vertically opposite angles are equal\u200b. Yes

Discussion

2271.	Write the coefficient of x\' in the 1/2 2x-1
Answer» 2

Discussion

2272.	Hpc
Answer»

Discussion

2273.	Calculate the following question.6. Find the value of polynomial P(x) = 2+x + 2x² -x² at x=2.....
Answer» 8 Sorry friends I do mistake I am sending again..OK

Discussion

2274.	Formula of c.s.a of sphere
Answer» 4πr squre 4pie r² 4 pie r² 4πr² Surface area (TSA) = CSA = 4πr²\xa0square units

Discussion

2275.	Kisi ko gf chahiye hai to come back
Answer» Bnugi????❤️?????????? Nahi chahiye or kuch School Oooooooo! Kha thi itne din tk

Discussion

2276.	theorem of chap.6
Answer» Theorem 6. 1 :\xa0If two lines intersect each other, then the vertically opposite angles are equalGiven :-\xa0two lines intersect each otherTo prove :- ∠AOC = ∠BOD and ∠AOD = ∠BOCProof :- AB and CD be two lines intersecting at O as shown in Fig 6 8 They lead to two pairs ofvertically opposite angles, namely, (i) ∠AOC and ∠ BOD(ii) ∠ AOD and ∠ BOCWe need to prove that ∠AOC = ∠BODand ∠AOD = ∠BOCNow, ray OA stands on line CDFrom (Linear pair axiom)∠AOC + ∠AOD = 180° … (1)∠AOD + ∠BOD = 180° … (2)From (1) and (2), we can write∠AOC + ∠AOD = ∠AOD + ∠BODThis implies that ∠AOC = ∠BOD\xa0Similarly, it can be proved that ∠AOD = ∠BOC\xa0Parallel Lines and a Transversal∠1, ∠ 2, ∠7 and ∠ 8 are called\xa0exterior angles,∠ 3, ∠ 4, ∠ 5 and ∠6 are called\xa0interior angles(a)\xa0Corresponding angles :(i) ∠1 = ∠ 5 (ii) ∠ 2 = ∠ 6 (iii) ∠ 4 = ∠ 8 (iv) ∠ 3 = ∠ 7(b)\xa0Alternate interior angles\xa0:(i) ∠ 4 = ∠ 6 (ii) ∠ 3 = ∠ 5(c)\xa0Alternate exterior angles:(i) ∠1 = ∠ 7 (ii) ∠ 2 = ∠8(d)\xa0Interior angles on the same side of the transversal:(i) ∠4 + ∠5 =180°(ii) ∠3 + ∠ 6 =180°

Discussion

2277.	What is the meaning of subtended angle
Answer» Angle between two chords of a circle

Discussion

2278.	Learn About The Mathematics?
Answer» ?

Discussion

2279.	Promise
Answer» Kab doo gi no yaa

Discussion

2280.	A park, in the shape of a quadrilateral ABCD, has
Answer» You are give a full question but I give a answer it\'s question from heron\'s formula it\'s answer is {65.5m² \|approx\| } Ha Batana kya

Discussion

2281.	AD and BC are equal perpendicular to a line segment AB .Show the CD bisects AB
Answer» Hdjsjshsisodjhdbxbxhxhxhxhxhxhxhhxhxhdhdbsbbbbbbbbbhjjjjjjbbbbvvvggctxtctcyycuhbuugyxtxrzezxctbyihugyd4s3x4ctvby In △OAD & △OBC∠B=∠A.. .....(90°).........∠D=∠C...............AD=BC...............So, byASA congruence criterion rule,△OAD is congruent to △OBCTherefore,OA=OB.............Hence, CD bisects AB........ hope this helps uhhh?

Discussion

2282.	3x+5/2x+1=1/3 solve this equation(A) 2(B) -2(C) 3(D) -3
Answer» do by own 3x+5/2x+1=1/3\xa03(3x + 5) = 1 (2x + 1) 3(3x) + 3(5) = 2x + 19x + 15 = 2x + 19x - 2x = 1 - 157x = -14x = -14/7 = -2

Discussion

2283.	Find the area of quadrilateral ABCD in which AB =3cm BC= 4cm CD =4cm BA=5cm and ac=5cm
Answer» Area of Quadrilateral = ar of ∆ABC + ar of ∆ADCArea of ∆ABC ::•• •●heron\'s formula{where, s is semi perimeter}area of ∆ABCArea of∆ADC ::•• •●Area of Quadrilateral = ar of ∆ABC + ar of ∆ADCSo the Area of Quadrilateral ABCD = 15.2cm .sq

Discussion

2284.	Gud evening frndsss......??
Answer» Hii Good evenings Hello

Discussion

2285.	How to improve in maths if I am lagging presently
Answer» Always stay one step ahead..!! coz when the teacher will teach in class, u will be able to answer her before other children\'s do...!!? Nothing just focus

Discussion

2286.	12(2x+4x)
Answer» 12(2x+4x)=(24x+48x)=72x 12(2x+4x)= 12 (6x)= 72 x 72x

Discussion

2287.	√2 +√2 is which type of number
Answer» It\'s irrational number It\'s a irrational number It is irrational number √2+√2 =2√2 Kskakakkwow It is irrational number√2+√2 =2√2

Discussion

2288.	Pppll
Answer» Hi priya

Discussion

2289.	Convert the followin in the form of p/q 23.567878..
Answer» 233392/9900

Discussion

2290.	X5 - x4 +3
Answer»

Discussion

2291.	.Rationalise:10/√3-√5
Answer» -5(√3+√5) Ans do na

Discussion

2292.	How to learn formula
Answer» 1. Practice concentration:\xa0Maths and Physics terms and formulas require intense focus and deep concentration to get absorbed into the mind. So you need to work on your concentration level to get all complicated or lengthy formulas stick to your mind.2.\xa0Relax your brain:\xa0Maths and Physics problems can never be learned under stress as a stressed brain loses its work potential and finds it difficult to work on complex things. So you need to first relax your mind. By doing this, you will be able to focus more on your task.3. Practice as much as you can:\xa0This may sound like an obvious point, but the more you practice using the formulas you need to know, the more likely you are to remember the same. List down all important formulas on a sheet and whenever you are free, glance at them once. After all, repetition leads to memorization.4. Minimize your reference checks: Many students think that once they take a glance at a formula, it is in their mind, but the next morning when they try to recall the same, they are shocked to realize that the formula leaked out during the night. To avoid such situation, try to practice solving a problem with the formula without looking it up.5. Understand the basic concept of the formula:\xa0Try to clear your basic concepts before moving ahead with the formulas. This will help you understand the sense of the formula.For example:\xa0In the formula, a = F / m, where acceleration (a) is expressed in terms of Force (F) and mass (m), F is on the top of the fraction. This makes sense, since if you exert more force on an object, it will speed up more quickly. Whereas, mass is on the bottom of the fraction, which means the speed of the object will decrease, since more mass means more inertia thus making the object more difficult to accelerate.6. Keep away with all distractions:\xa0Not only the gadgets you use need to be talked under this heading, but your physical desires like hunger, thirst,\xa0drowsiness, etc., also need to be kept away.7. Learn the derivation of every formula.\xa0Derivation of a formula will help you familiarise with the roots and concepts of that formula which can help you retain the same for long time in your brain. Moreover, when you derive a formula, you come across a number of other formulas. That way you can memorize just the bare minimum number of formulae that you need to derive the rest from.8. Use memorising tricks:\xa0Try to create a story that involves everything you are trying to learn. The sequence of a story can help you to remember things in a particular order.For example:\xa0To learn the trigonometric ratios; P/H = sin, B/H = cos, P/B = tan,\xa0you can use a phrase\xa0“pandit badri prasad har har bole sona chandi tole”\xa0and then set the words like:\xa0Work out on more of such phrases that can help you recall the long-complicated formulas.Thus all the tips and tricks given above if followed wisely, will definitely help you master Maths and Physics, getting you an awesome score in your board exams.

Discussion

2293.	√24
Answer»

Discussion

2294.	Why polynomial cannot be divide
Answer» What is polynomial Gi \xa0 \xa0 \xa0 \t JUL 24, 2020 Polynomial Rules: What Defines Polynomials? \t MELANIE \t\xa0\t\xa0 Melanie has a BS in physical science and is in grad school for analytics and modeling. Her research is in computational chemistry. Polynomial RulesWhat are the rules for polynomials? The short answer is that polynomials\xa0cannot\xa0contain the following: division by a variable, negative exponents, fractional exponents, or radicals. \xa0 What is a polynomial?A polynomial is an expression containing two or more algebraic terms. They are often the sum of several terms containing different powers (exponents) of variables.There are some pretty cool things about polynomials. For example, if you add or subtract polynomials, you get another polynomial. If you multiply them, you get another polynomial.Polynomials often represent a function. And if you graph a polynomial of a single variable, you\'ll get a nice, smooth, curvy line with continuity (no holes.) \xa0 What does \'polynomial\' mean?The "poly" in polynomial comes from Greek and means "multiple." "Nomial", also Greek, refers to terms, so polynomial means "multiple terms."The elements of a polynomial A polynomial can contain variables, constants, coefficients, exponents, and operators.Melanie ShebelWhat Makes Up PolynomialsA polynomial is an algebraic expression made up of two or more terms. Polynomials are composed of some or all of the following:\tVariables\xa0- these are letters like x, y, and b\tConstants\xa0- these are numbers like 3, 5, 11. They are sometimes attached to variables, but can also be found on their own.\tExponents\xa0- exponents are usually attached to variables, but can also be found with a constant. Examples of exponents include the 2 in 5² or the 3 in x³.\tAddition, subtraction, multiplication, and division\xa0- For example, you can have 2x (multiplication), 2x+5 (multiplication and addition), and x-7 (subtract.)Rules: What ISN\'T a PolynomialThere are a few rules as to what polynomials cannot contain:Polynomials cannot contain division by a variable.For example, 2y2+7x/4 is a polynomial, because 4 is not a variable. However, 2y2+7x/(1+x) is not a polynomial as it contains division by a variable.Polynomials cannot contain negative exponents.You cannot have 2y-2+7x-4. Negative exponents are a form of division by a variable (to make the negative exponent positive, you have to divide.) For example, x-3\xa0is the same thing as 1/x3.Polynomials cannot contain fractional exponents.Terms containing fractional exponents (such as 3x+2y1/2-1) are not considered polynomials.Polynomials cannot contain radicals.For example, 2y2\xa0+√3x + 4 is not a polynomial

2294.

Why polynomial cannot be divide

Answer» What is polynomial
Gi

\xa0

\t

JUL 24, 2020

Polynomial Rules: What Defines Polynomials?

\t

MELANIE

\t\xa0\t\xa0

Melanie has a BS in physical science and is in grad school for analytics and modeling. Her research is in computational chemistry.

Polynomial RulesWhat are the rules for polynomials? The short answer is that polynomials\xa0cannot\xa0contain the following: division by a variable, negative exponents, fractional exponents, or radicals.What is a polynomial?A polynomial is an expression containing two or more algebraic terms. They are often the sum of several terms containing different powers (exponents) of variables.There are some pretty cool things about polynomials. For example, if you add or subtract polynomials, you get another polynomial. If you multiply them, you get another polynomial.Polynomials often represent a function. And if you graph a polynomial of a single variable, you\'ll get a nice, smooth, curvy line with continuity (no holes.)What does \'polynomial\' mean?The "poly" in polynomial comes from Greek and means "multiple." "Nomial", also Greek, refers to terms, so polynomial means "multiple terms."The elements of a polynomial

A polynomial can contain variables, constants, coefficients, exponents, and operators.Melanie ShebelWhat Makes Up PolynomialsA polynomial is an algebraic expression made up of two or more terms. Polynomials are composed of some or all of the following:\tVariables\xa0- these are letters like x, y, and b\tConstants\xa0- these are numbers like 3, 5, 11. They are sometimes attached to variables, but can also be found on their own.\tExponents\xa0- exponents are usually attached to variables, but can also be found with a constant. Examples of exponents include the 2 in 5² or the 3 in x³.\tAddition, subtraction, multiplication, and division\xa0- For example, you can have 2x (multiplication), 2x+5 (multiplication and addition), and x-7 (subtract.)Rules: What ISN\'T a PolynomialThere are a few rules as to what polynomials cannot contain:Polynomials cannot contain division by a variable.For example, 2y2+7x/4 is a polynomial, because 4 is not a variable. However, 2y2+7x/(1+x) is not a polynomial as it contains division by a variable.Polynomials cannot contain negative exponents.You cannot have 2y-2+7x-4. Negative exponents are a form of division by a variable (to make the negative exponent positive, you have to divide.) For example, x-3\xa0is the same thing as 1/x3.Polynomials cannot contain fractional exponents.Terms containing fractional exponents (such as 3x+2y1/2-1) are not considered polynomials.Polynomials cannot contain radicals.For example, 2y2\xa0+√3x + 4 is not a polynomial

Discussion

2295.	What is the rational number?
Answer» Rational number are those number which can be represented in p/q form or fraction form in which q ≠ 0 or denominator is not equal to 0. A rational number, in Mathematics, can be defined as any number which can be represented in the form of p/q where q ≠ 0. Also, we can say that any fraction fits under the category of rational numbers, where the denominator and numerator are integers and the denominator is not equal to zero. When the rational number (i.e., fraction) is divided, the result will be in decimal form, which may be either terminating decimal or the repeating decimal.\xa0 A rational number, in Mathematics, can be defined as any number which can be represented in the form of p/q where q ≠ 0. Also, we can say that any fraction fits under the category of rational numbers, where the denominator and numerator are integers and the denominator is not equal to zero.\xa0When the rational number (i.e., fraction) is divided, the result will be in decimal form, which may be either terminating decimal or the repeating decimal.\xa0

Discussion

2296.	X cube - y cube - x+y
Answer» = x²-y²

Discussion

2297.	tanA(cotB+1)-cotB(tanA+1) Simplifly how to do Ans=tanA-cotB
Answer»

Discussion

2298.	What is ment by ....
Answer» Ment ??Its meant not mentStudy hard ?✏?? . Is .which is called .

Discussion

2299.	exercises of 2nd chapters polynomials all
Answer» Use the app (all ncert solutions app)

Discussion

2300.	If figure a,b,c three point on a circle
Answer»

Discussion

Explore topic-wise InterviewSolutions in .

Anyone here so plz talk with me

Every natural number is a whole number. Why ?

What is variable in maths and also define linear equations with eg.

Draw a line L and take a point P which is not on L. From point P draw M parallel L.

Subtract ___ - x² +10x - 5 from 5x - 10 .

X cube - 2 xsq1x +2

Rout 5+rout 7whole square

Draw the graph 3x+2y=7

Solve √2-2×4√2=4

Find sum of 1-2√5 and 3+7√5.

(ii) Justify the shape generated by PQRS with a geometrical principle.

Prove area of equilateral triangle by using heron formula

In the figure ab and CD are opposite rays If angle C A D is equals to 135 degree find Angle B A D

Write the coefficient of x² in the expansion of (x-2)²

Evaluate (25)⅓×(5)⅓

The perimeter of rhombus is 20 CM 18 diagonal is 8 cm then the area of rhombus is

Divide x+3x² - 1 by 1+x

Is parallelogram a trapezium

I am Shubham Raj from lmc high school from Tikari and I was mainly interested in maths

Prove that: vertically opposite angles are equal.

Write the coefficient of x\' in the 1/2 2x-1

Hpc

Calculate the following question.6. Find the value of polynomial P(x) = 2+x + 2x² -x² at x=2.....

Formula of c.s.a of sphere

Kisi ko gf chahiye hai to come back

theorem of chap.6

What is the meaning of subtended angle

Learn About The Mathematics?

Promise

A park, in the shape of a quadrilateral ABCD, has

AD and BC are equal perpendicular to a line segment AB .Show the CD bisects AB

3x+5/2x+1=1/3 solve this equation(A) 2(B) -2(C) 3(D) -3

Find the area of quadrilateral ABCD in which AB =3cm BC= 4cm CD =4cm BA=5cm and ac=5cm

Gud evening frndsss......??

How to improve in maths if I am lagging presently

12(2x+4x)

√2 +√2 is which type of number

Pppll

Convert the followin in the form of p/q 23.567878..

X5 - x4 +3

.Rationalise:10/√3-√5

How to learn formula

√24

Why polynomial cannot be divide

What is the rational number?

X cube - y cube - x+y

tanA(cotB+1)-cotB(tanA+1) Simplifly how to do Ans=tanA-cotB

What is ment by ....

exercises of 2nd chapters polynomials all

If figure a,b,c three point on a circle