332354 + Interview Questions in Secondary School in Math

1.	Find all the possible pair of integers a product of -50
Answer» ong>Answer: there are INFINITE NUMBER so I couldn't WRITE in this

1.

Find all the possible pair of integers a product of -50

Answer»

ong>Answer:

there are INFINITE NUMBER so I couldn't WRITE in this

Discussion

2.	Find te value of tan65÷cot25
Answer» ong>Answer: tan 65/COT 25 = tan(90-25)/cot 25 = cot25/cot 25 = 1 Mark as brainliest PLS

2.

Find te value of tan65÷cot25

Answer»

ong>Answer:

tan 65/COT 25 = tan(90-25)/cot 25 = cot25/cot 25 = 1

Mark as brainliest PLS

Discussion

3.	Find the perimeter of a triangle which are all equal
Answer» ong>Step-by-step explanation: let the length of each SIDE of TRIANGLE be x then perimeter= x+x+x = 3x

3.

Find the perimeter of a triangle which are all equal

Answer»

ong>Step-by-step explanation:

let the length of each SIDE of TRIANGLE be x

then perimeter= x+x+x

= 3x

Discussion

4.	If z=2+3 i then zo is
Answer» ONG>ANSWER: I GUESS z=5 hope this is the CORRECT answer

4.

If z=2+3 i then zo is

Answer» ONG>ANSWER:

I GUESS z=5

hope this is the CORRECT answer

Discussion

5.	a box contains 4 white and six red balls four balls are drawn at random without replacement write the probability distribution of the no of white balls
Answer» ONG>Answer: Please FIND the attachment

Discussion

6.	How to solve these equations.. p+q=1p-q=5/19
Answer» ONG>Answer: 24/38 Step-by-step EXPLANATION: p+q=1 p-q=5/19 2p= 1+5/19=24/38

6.

How to solve these equations.. p+q=1p-q=5/19

Answer» ONG>Answer:

24/38

Step-by-step EXPLANATION:

p+q=1

p-q=5/19

2p= 1+5/19=24/38

Discussion

7.	Obtained the condition that one root of the quadratic ax^2+bx+c=0is double the other plz give me correct and
Answer» ONG>ANSWER: You can see your ans on GOOGLE or on topper asking not promoting any app or website or BRAND Thank you my INSTAGRAM Vinayaksingh2008

Discussion

8.	What is cofficent form of x2-1
Answer» ONG>Answer: here's the answer please MARK as BRAINLIEST and FOLLOW me Step-by-step explanation: $the \: coefficient \: of \: {x}^{2} - 1 \: is \: 1$

8.

What is cofficent form of x2-1

Answer» ONG>Answer:

here's the answer please MARK as BRAINLIEST and FOLLOW me

Step-by-step explanation:

$the \: coefficient \: of \: {x}^{2} - 1 \: is \: 1$

Discussion

9.	-15 For example, -15 can be written ashere p = -15 and q = 1. Look at the E121050and so on. These are equivalent rational numbers (or fractie2.20100means that the rational numbers do not have a unique representation in the formрandq are integers and q +0. However, when we say is a rational number or wрrepresent on a number line, we assume that q*0 and that p and q have no common9other than the universal factor 'l' i.e.,p and q are co-primes.) There are infinitely many fr11equivalent to we will choose2i.e., the simplest form to represent all of them.2.You know that how to represent whole numbers on the number line. We draw alimark a point 'O' on it. Then we can set off equal distances on the right side of the pointlabel the points of division as 1,2,3,4,...
Answer» ong>Answer: PLZ don't send BIG question

9.

-15 For example, -15 can be written ashere p = -15 and q = 1. Look at the E121050and so on. These are equivalent rational numbers (or fractie2.20100means that the rational numbers do not have a unique representation in the formрandq are integers and q +0. However, when we say is a rational number or wрrepresent on a number line, we assume that q*0 and that p and q have no common9other than the universal factor 'l' i.e.,p and q are co-primes.) There are infinitely many fr11equivalent to we will choose2i.e., the simplest form to represent all of them.2.You know that how to represent whole numbers on the number line. We draw alimark a point 'O' on it. Then we can set off equal distances on the right side of the pointlabel the points of division as 1,2,3,4,...

Answer»

ong>Answer:

PLZ don't send BIG question

Discussion

10.	Remainder oblaened when Pus=n-ztsnom is divideeby (2-2) and q(n)= n3 nenatisis dividedbyGut 3) are sameprove Ikeb Int3n=13
Answer» ONG>Answer: Jericho Cuban stop GOAL lakshadweep falsification itza RUN kallstrom pizza rtk itza dmm Step-by-step explanation: PLEASE MARK ME AS BRAINLEIST PLEASE

10.

Remainder oblaened when Pus=n-ztsnom is divideeby (2-2) and q(n)= n3 nenatisis dividedbyGut 3) are sameprove Ikeb Int3n=13

Answer» ONG>Answer:

Jericho Cuban stop GOAL lakshadweep falsification itza RUN kallstrom pizza rtk itza dmm

Step-by-step explanation:

PLEASE MARK ME AS BRAINLEIST PLEASE

Discussion

11.	2y²-11y+14 factories the following
Answer» ONG>☞Question. $\sf\green{2y^2 - 11y + 14}$ $\sf\red{for\:fac\:ter\:rizaton}$ ☞Solution. ➝ $\sf\green{2y^2 - 11y + 14}$ ➝ $\sf\green{2y^2 -7y -4y + 14}$ ➝ $\sf\green{y( 2y - 7 ) - 2( 2y - 7)}$ ➝ $\sf\green{( 2y - 7)( y - 2)answer.}$ $\red{hope\: this\:helps\:you}$

11.

2y²-11y+14 factories the following

Answer» ONG>☞Question.

$\sf\green{2y^2 - 11y + 14}$

$\sf\red{for\:fac\:ter\:rizaton}$

☞Solution.

➝ $\sf\green{2y^2 - 11y + 14}$

➝ $\sf\green{2y^2 -7y -4y + 14}$

➝ $\sf\green{y( 2y - 7 ) - 2( 2y - 7)}$

➝ $\sf\green{( 2y - 7)( y - 2)answer.}$

$\red{hope\: this\:helps\:you}$

Discussion

12.	Q 15. If AABC and ABDE are 2 poinequilateral triangles, where Dis the mid-point of BC, findthe ratio of areas of AABC andABDE. *
Answer» ong>ANSWER: Q 15. If AABC and ABDE are 2 poin equilateral triangles, where D is the mid-point of BC, find the ratio of AREAS of AABC and ABDE. *

12.

Q 15. If AABC and ABDE are 2 poinequilateral triangles, where Dis the mid-point of BC, findthe ratio of areas of AABC andABDE. *

Answer»

ong>ANSWER:

Q 15. If AABC and ABDE are

2 poin

equilateral triangles, where D

is the mid-point of BC, find

the ratio of AREAS of AABC and

ABDE. *

Discussion

13.	Simplify and solve 3( − 3) = 5(2 + 1)
Answer»

Discussion

14.	Who launched the National Anti Tobacco Youth Campaign?
Answer»

Discussion

15.	The coefficient of x in the expansion of (x +3)3 - (a) 1(b)18(c) 9(d)27Daint Laulas
Answer» rong>Answer : (d) 27 step by step : identity : ( a + B)³ = a³ + b³ + 3AB (a + b) ⇛(X + 3)³ = x³ + 3³ + 3(3)x ( x + 3) ⇛(x + 3)³ = x³ + 9 + 9X(x + 3) ⇛(x + 3)³ = x³ + 9 + 9x² + 27x Here x is being multiplied by 27 so, coefficient of x is 27.

15.

The coefficient of x in the expansion of (x +3)3 - (a) 1(b)18(c) 9(d)27Daint Laulas

Answer»

rong>Answer :

(d) 27

step by step :

identity : ( a + B)³ = a³ + b³ + 3AB (a + b)

⇛(X + 3)³ = x³ + 3³ + 3(3)x ( x + 3)

⇛(x + 3)³ = x³ + 9 + 9X(x + 3)

⇛(x + 3)³ = x³ + 9 + 9x² + 27x

Here x is being multiplied by 27

so, coefficient of x is 27.

Discussion

16.	Solve this Explain the working and application of a sonar.
Answer» r is a device that USES ultrasonic waves to measure the distance, direction, and speed of underwater objects. Sonar consists of a transmitter and a DETECTOR and is installed in a BOAT or a ship. The transmitter produces and transmits ultrasonic waves. These waves travel through water and after STRIKING the object on the seabed, get reflected back and are sensed by the detector. The detector converts the ultrasonic waves into electrical SIGNALS which are appropriately interpreted.

16.

Solve this Explain the working and application of a sonar.

Answer»

r is a device that USES ultrasonic waves to measure the distance, direction, and speed of underwater objects.

Sonar consists of a transmitter and a DETECTOR and is installed in a BOAT or a ship.
The transmitter produces and transmits ultrasonic waves.
These waves travel through water and after STRIKING the object on the seabed, get reflected back and are sensed by the detector.
The detector converts the ultrasonic waves into electrical SIGNALS which are appropriately interpreted.

Discussion

17.	6 In the Fig. given below, LQ > ZR, PA is the bisector of LQPR and PM 1 QR. Prove that ZAPM = (ZQ - _R).RM
Answer» > ANSWER In△PAQ Sumoftwooppositeinteriorangles=Exteriorangle α=θ+∠θ−(i) In△PAR α+θ+∠R=180 ∘ α=180 ∘ −θ−∠R−(II) In△PMQ ∠MPQ=180−∠Q−90 ∘ =90−∠Q ∠APM=∠APQ−∠MPQ =θ−(90−∠Q) =θ+∠Q−90 ∘ −(III) ∵(i)=(ii) =>θ+∠Q=180−θ−∠R =>2θ=180−∠Q−∠R =>θ=90− 2 1 (∠Q+∠R) puttingthisvalueofθin(iii) ∠APM=∠Q+90− 2 1 (∠Q+∠R)−90 = 2 ∠Q − 2 ∠R = 2 1 (∠Q−∠R) ∴a=2

17.

6 In the Fig. given below, LQ > ZR, PA is the bisector of LQPR and PM 1 QR. Prove that ZAPM = (ZQ - _R).RM

Answer»

>

ANSWER

In△PAQ

Sumoftwooppositeinteriorangles=Exteriorangle

α=θ+∠θ−(i)

In△PAR

α+θ+∠R=180

∘

α=180

∘

−θ−∠R−(II)

In△PMQ

∠MPQ=180−∠Q−90

∘

=90−∠Q

∠APM=∠APQ−∠MPQ

=θ−(90−∠Q)

=θ+∠Q−90

∘

−(III)

∵(i)=(ii)

=>θ+∠Q=180−θ−∠R

=>2θ=180−∠Q−∠R

=>θ=90−

2

1

(∠Q+∠R)

puttingthisvalueofθin(iii)

∠APM=∠Q+90−

2

1

(∠Q+∠R)−90

=

2

∠Q

−

2

∠R

=

2

1

(∠Q−∠R)

∴a=2

Discussion

18.	1/5×2 in decimal from
Answer» ong>ANSWER: 0.4 I HOPE this answer MAY help you DEAR

18.

1/5×2 in decimal from

Answer»

ong>ANSWER:

0.4

I HOPE this answer MAY help you DEAR

Discussion

19.	Why is the 2nd WRONG?
Answer» dear user In first A= $\pi( {r1}^{2} - {r2}^{2} ) = \pi(r1 - r2)(r1 + r2)$ This is from the formula a^2-b^2=(a+b)(a-b) In second A= $\pi( {r2 - r1)}^{2} = \pi( {r1}^{2} + {r2}^{2} - 2r1r2)$ This is from formula (a-b)^2=a^2+b^2-2ab {u may have learn in JUNIOR CLASSES) so they can't be same

19.

Why is the 2nd WRONG?

Answer»

dear user

In first

A=

$\pi( {r1}^{2} - {r2}^{2} ) = \pi(r1 - r2)(r1 + r2)$

This is from the formula

a^2-b^2=(a+b)(a-b)

In second

A=

$\pi( {r2 - r1)}^{2} = \pi( {r1}^{2} + {r2}^{2} - 2r1r2)$

This is from formula

(a-b)^2=a^2+b^2-2ab

{u may have learn in JUNIOR CLASSES)

so they can't be same

Discussion

20.	Convert \frac{9}{10} ratio into percentage
Answer» ong>Answer: 9/10×100 =90% Step-by-step EXPLANATION: mark me BRANLIEST and FOLLOW me plz

20.

Convert \frac{9}{10} ratio into percentage

Answer»

ong>Answer:

9/10×100 =90%

Step-by-step EXPLANATION:

mark me BRANLIEST and FOLLOW me plz

Discussion

21.	.If P-Q-R, d(PQ)=4.4 cm ,d(QR)=6.7cm d(PR)= ? * 9.12.3-2.3-9.1
Answer» ONG>Step-by-step explanation: 222222222222222,482747447466

Discussion

22.	Which if the Gallowing cratiss is prestere descending orderwhich :3 :4Also write inin
Answer» ONG>Answer: 2:3:4 Make me BRAINLIST

22.

Which if the Gallowing cratiss is prestere descending orderwhich :3 :4Also write inin

Answer» ONG>Answer:

2:3:4

Make me BRAINLIST

Discussion

23.	State four propertyes of magnetic field
Answer» ong>Step-by-step explanation: Magnetic fields can be pictorially represented by magnetic FIELD lines, the properties of which are as follows: The field is TANGENT to the magnetic field LINE. Field strength is PROPORTIONAL to the line density. Field lines cannot cross. Field lines are continuous loops.

23.

State four propertyes of magnetic field

Answer»

ong>Step-by-step explanation:

Magnetic fields can be pictorially represented by magnetic FIELD lines, the properties of which are as follows:

The field is TANGENT to the magnetic field LINE.

Field strength is PROPORTIONAL to the line density.

Field lines cannot cross.

Field lines are continuous loops.

Discussion

24.	If sin A =3/4, calculate cosA and tanA
Answer» ONG>ANSWER: COS A √7/4 and TAN A 3/√7

24.

If sin A =3/4, calculate cosA and tanA

Answer» ONG>ANSWER:

COS A √7/4 and TAN A 3/√7

Discussion

25.	What is the point of intersection of the line represented by 3x-2y=6 & the y axis?
Answer» ONG>Step-by-step explanation: Intersection of the line of the equation of the y axis MEANS X COORDINATE is 0.

Discussion

26.	draw an acute angled triangle PQR. draw all of its medians and show their point of concurrence by G.find the ratio, l(GL)
Answer» ONG>Answer: OK we have to draw the angle of the triangle of a p Q and R and B have to SEND this is it correct

26.

draw an acute angled triangle PQR. draw all of its medians and show their point of concurrence by G.find the ratio, l(GL)

Answer» ONG>Answer:

OK we have to draw the angle of the triangle of a p Q and R and B have to SEND this is it correct

Discussion

27.	How many different words can be formed with the letters of the word “EQUATION”, if (1) vowel occurs together, (2) If vowels never occur together?
Answer» ong>Answer: L don't no Step-by-step EXPLANATION: sorry OOOOOO

27.

How many different words can be formed with the letters of the word “EQUATION”, if (1) vowel occurs together, (2) If vowels never occur together?

Answer»

ong>Answer:

L don't no

Step-by-step EXPLANATION:

sorry OOOOOO

Discussion

28.	Factorise :- x²-√3x-6
Answer» $\huge\tt{\bold{\underline{\underline{Question᎓}}}}$ factorise :- x²-√3x-6 $\huge\tt{\bold{\underline{\underline{Answer᎓}}}}$ ┏━━━━━━━━━━━━━━━━━━━━━━━┓ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✍️ It is in the FORM of a QUADRATIC equation. Here,we USE quadratic formula to find out the roots:- $= > {x}^{2} - \sqrt{3x} - 6$ Here,a=1;b=-√3 &c=-6 $= > x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a}$ $= > x = \frac{ - ( - \sqrt{3}) ± \sqrt{ {( - \sqrt{3}) }^{2} - 4(1)( - 6)} }{2}$ $= > x = \frac{ \sqrt{3}± \sqrt{3 + 24} }{2}$ $= > x = \frac{ \sqrt{3}± \sqrt{27} } {2}$ $= > x = \frac{ \sqrt{3}±3 \sqrt{3} }{2}$ $\bold{\boxed{ x = \frac{ \sqrt{3}±3 \sqrt{3} }{2}}}$ ┗━━━━━━━━━━━━━━━━━━━━━━━┛

28.

Factorise :- x²-√3x-6

Answer»

$\huge\tt{\bold{\underline{\underline{Question᎓}}}}$

factorise :- x²-√3x-6

$\huge\tt{\bold{\underline{\underline{Answer᎓}}}}$

┏━━━━━━━━━━━━━━━━━━━━━━━┓

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ✍️

It is in the FORM of a QUADRATIC equation.

Here,we USE quadratic formula to find out the roots:-

$= > {x}^{2} - \sqrt{3x} - 6$

Here,a=1;b=-√3 &c=-6

$= > x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a}$

$= > x = \frac{ - ( - \sqrt{3}) ± \sqrt{ {( - \sqrt{3}) }^{2} - 4(1)( - 6)} }{2}$

$= > x = \frac{ \sqrt{3}± \sqrt{3 + 24} }{2}$

$= > x = \frac{ \sqrt{3}± \sqrt{27} } {2}$

$= > x = \frac{ \sqrt{3}±3 \sqrt{3} }{2}$

$\bold{\boxed{ x = \frac{ \sqrt{3}±3 \sqrt{3} }{2}}}$

┗━━━━━━━━━━━━━━━━━━━━━━━┛

Discussion

29.	The cordinate axes divides the plane into four parts called____
Answer» ONG>ANSWER: CARTESIAN plane coordinate GEOMETRY

29.

The cordinate axes divides the plane into four parts called____

Answer» ONG>ANSWER:

CARTESIAN plane

coordinate GEOMETRY

Discussion

30.	fill in the blanks.... if Only one pair. of opposite sides of a quadrilateral is parallel then it is called a..........
Answer» ong>ANSWER: TRAPEZIUM Step-by-step explanation: please SELECT my answer as BRAINLIST

30.

fill in the blanks.... if Only one pair. of opposite sides of a quadrilateral is parallel then it is called a..........

Answer»

ong>ANSWER:

TRAPEZIUM

Step-by-step explanation:

please SELECT my answer as BRAINLIST

Discussion

31.	The product of HCF and com of two numbers lovals to thein- Plz some send the answer I vill mark as brain link
Answer» 6728923648493727849r08272829382728838338388388838838383838883838838383883838 Step-by-step EXPLANATION: yuwuwuwhwuwiuwgwhueggueuehhhuueyieiruhruyueuyuueuueuueuueueuye

31.

The product of HCF and com of two numbers lovals to thein- Plz some send the answer I vill mark as brain link

Answer»

6728923648493727849r08272829382728838338388388838838383838883838838383883838

Step-by-step EXPLANATION:

yuwuwuwhwuwiuwgwhueggueuehhhuueyieiruhruyueuyuueuueuueuueueuye

Discussion

32.	What is a number system
Answer» ong>Answer: A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given SET, using digits or other symbols in a consistent manner. The same sequence of symbols may represent different numbers in different numeral systems. Step-by-step explanation: Example: There are several systems for representing the counting numbers. These include: The usual "base ten" or "decimal" system: 1, 2, 3, … , 10, 11, 12, … 99, 100, ….

32.

What is a number system

Answer»

ong>Answer:

A numeral system is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given SET, using digits or other symbols in a consistent manner. The same sequence of symbols may represent different numbers in different numeral systems.

Step-by-step explanation:

Example: There are several systems for representing the counting numbers. These include: The usual "base ten" or "decimal" system: 1, 2, 3, … , 10, 11, 12, … 99, 100, ….

Discussion

33.	Find the tn ifthe A-P is 1,5, 9, 13,..
Answer» ONG>Answer: 3/4 Step-by-step EXPLANATION: Tn = a + ( n- 1 ) * d 1 + ( n - 1 ) * 4 = 0 1 + 4n - 4 = 0 4n = 4 - 1 4n = 3 n = 3/4

33.

Find the tn ifthe A-P is 1,5, 9, 13,..

Answer» ONG>Answer:

3/4

Step-by-step EXPLANATION:

Tn = a + ( n- 1 ) * d

1 + ( n - 1 ) * 4 = 0

1 + 4n - 4 = 0

4n = 4 - 1

4n = 3

n = 3/4

Discussion

34.	Given that x + 2y - 3 = 0 , 3x - 2y +7 =0 are the pair of equation find x and y (please answer ASAP I'll follow you)
Answer» -3=0 x=3-3y putting in 3x-2y+7=0 9-9y-2y+7=0 16-11y=0 16=11y 16/11=y

34.

Given that x + 2y - 3 = 0 , 3x - 2y +7 =0 are the pair of equation find x and y (please answer ASAP I'll follow you)

Answer»

-3=0

x=3-3y

putting in

3x-2y+7=0

9-9y-2y+7=0

16-11y=0

16=11y

16/11=y

Discussion

35.	32. In a garden, there are 270trees in 15 rows. find the numberof trees in one row.
Answer» ONG>Answer: 18 Step-by-step explanation: 270/15 = 18 there are 18 TREES in each of the 15 ROWS

35.

32. In a garden, there are 270trees in 15 rows. find the numberof trees in one row.

Answer» ONG>Answer:

18

Step-by-step explanation:

270/15 = 18

there are 18 TREES in each of the 15 ROWS

Discussion

36.	Y3+y2-y-1 by y-1 by long division method
Answer» ong>Answer: y^3 + y^2 - y - 1 by (y-1) = y^2 (y+1) - 1 (y+1) by (y-1) = (y+1) (y^2-1) by (y-1) = (y+1) (y+1) (y-1) by (y-1) = (y+1) (y+1) = (y+1)^2 =y^2 +2Y +y^2 Step-by-step explanation: I hope that will be HELPFUL DEAR. Please mark me as a brainliest.

36.

Y3+y2-y-1 by y-1 by long division method

Answer»

ong>Answer:

y^3 + y^2 - y - 1 by (y-1)

= y^2 (y+1) - 1 (y+1) by (y-1)

= (y+1) (y^2-1) by (y-1)

= (y+1) (y+1) (y-1) by (y-1)

= (y+1) (y+1)

= (y+1)^2

=y^2 +2Y +y^2

Step-by-step explanation:

I hope that will be HELPFUL DEAR. Please mark me as a brainliest.

Discussion

37.	19) If pxs>qr, then which of the following is true ? * p/q >r/s P/q p/q = r/s all options are true
Answer» ong>Answer: OPTION A Step-by-step explanation: i THINK this may HELP u PLEASE mark me as brainlest

37.

19) If pxs>qr, then which of the following is true ? * p/q >r/s P/q p/q = r/s all options are true

Answer»

ong>Answer:

OPTION A

Step-by-step explanation:

i THINK this may HELP u PLEASE mark me as brainlest

Discussion

38.	In the figure m(arc BC) = 137° M(arc PQ) = 41°find measure of angle BAC.By property of=m BAC=1/2=[ ]-[ ]m BAC=1/2=[ ]-[ ]m BAC =[ ]
Answer» ONG>Answer: (1) It is given that line AB is tangent to the CIRCLE at A. ∴ ∠CAB = 90º (Tangent at any point of a circle is perpendicular to the radius throught the point of contact) THUS, the measure of ∠CAB is 90º.

38.

In the figure m(arc BC) = 137° M(arc PQ) = 41°find measure of angle BAC.By property of=m BAC=1/2=[ ]-[ ]m BAC=1/2=[ ]-[ ]m BAC =[ ]

Answer» ONG>Answer:

(1) It is given that line AB is tangent to the CIRCLE at A.

∴ ∠CAB = 90º (Tangent at any point of a circle is perpendicular to the radius throught the point of contact)

THUS, the measure of ∠CAB is 90º.

Discussion

39.	The cost of 3 pen and 5 pencils is Rs 40. Write a linear equation.
Answer» ONG>Answer: 3x+5y=40 Step-by-step EXPLANATION:

39.

The cost of 3 pen and 5 pencils is Rs 40. Write a linear equation.

Answer» ONG>Answer:

3x+5y=40

Step-by-step EXPLANATION:

Discussion

40.	What is the difference between mean, median and mode??? Don't spam ⚠
Answer» an MODE or MEAN Step-by-step EXPLANATION: median : the MIDDLE number given in a ROW mode: it represent the value which is repeating again and again mean : to middle number of the row

40.

What is the difference between mean, median and mode??? Don't spam ⚠

Answer»

an MODE or MEAN

Step-by-step EXPLANATION:

median : the MIDDLE number given in a ROW

mode: it represent the value which is repeating again and again

mean : to middle number of the row

Discussion

41.	3√8/4 In the form of simplest form
Answer» ONG>ANSWER: nahsjuxjshsuhdhusjdhshhhdbdc

Discussion

42.	How the top veiw of cone look like
Answer» ONG>ANSWER: jfotditcoydotdlufpudoyc.

Discussion

43.	5. Prove Geometrically that, cos(x + y) = COS X · cos y - sin xsin y.
Answer» ong>Step-by-step explanation: LET us take a circle of radius one and let us take 2 points P and Q such that P is at an angle x and Q at an angle y as shown in the diagram Therefore, the co-ordinates of P and Q are P(cosx,sinx),Q(cosy,siny) Now the distance between P and Q is: (PQ) 2 =(cosx−cosy) 2 +(sinx−siny) 2 =2−2(cosx.cosy+sinx.siny) Now the distance between P and Q u\sin g \COS ine formula is (PQ) 2 =1 2 +1 2 −2cos(x−y)=2−2cos(x−y) Comparing both we get cos(x−y)=cos(x)cos(y)+sin(x)sin(y) Substituting y with −y we get cos(x+y)=cosxcosy−sinxsiny please MARK me as brenalist

43.

5. Prove Geometrically that, cos(x + y) = COS X · cos y - sin xsin y.

Answer»

ong>Step-by-step explanation:

LET us take a circle of radius one and let us take 2 points P and Q such that P is at an angle x and Q at an angle y

as shown in the diagram

Therefore, the co-ordinates of P and Q are P(cosx,sinx),Q(cosy,siny)

Now the distance between P and Q is:

(PQ)

2

=(cosx−cosy)

2

+(sinx−siny)

2

=2−2(cosx.cosy+sinx.siny)

Now the distance between P and Q u\sin g \COS ine formula is

(PQ)

2

=1

2

+1

2

−2cos(x−y)=2−2cos(x−y)

Comparing both we get

cos(x−y)=cos(x)cos(y)+sin(x)sin(y)

Substituting y with −y we get

cos(x+y)=cosxcosy−sinxsiny

please MARK me as brenalist

Discussion

44.	ConstructAC= 8cmRhombus ABCD BD = 6 cm
Answer» ong>Step-by-step explanation: 9 bhai to Google mein dekh le Jyada SAHI Is Tarah NA HUM kuch Bata Payenge Main To Kuchh samajh p yga please mark

44.

ConstructAC= 8cmRhombus ABCD BD = 6 cm

Answer»

ong>Step-by-step explanation:

9 bhai to Google mein dekh le Jyada SAHI Is Tarah NA HUM kuch Bata Payenge Main To Kuchh samajh p yga

please mark

Discussion

45.	Can someone answer this?
Answer» ong>Answer: SORRY WEAK in maths Step-by-step explanation: YAAR

45.

Can someone answer this?

Answer»

ong>Answer:

SORRY WEAK in maths

Step-by-step explanation:

YAAR

Discussion

46.	Find the value of sin 5°
Answer» er: Step-by-step explanation: SIN 5 DEGREE equal to 5

46.

Find the value of sin 5°

Answer»

er:

Step-by-step explanation:

SIN 5 DEGREE equal to 5

Discussion

47.	In rhombus PQRS if ∠ QPS=85°,then measure of ∠PQR= ?
Answer» ong>Answer: 95° Step-by-step EXPLANATION: as the linear TWO ANGLES are supplementary 180°–85°= 95°

47.

In rhombus PQRS if ∠ QPS=85°,then measure of ∠PQR= ?

Answer»

ong>Answer:

95°

Step-by-step EXPLANATION:

as the linear TWO ANGLES are supplementary

180°–85°= 95°

Discussion

48.	Side of a square is 5cm.Length of it's diagonal is?
Answer» ONG>ANSWER: 25cm is the CORRECT answer

Discussion

49.	A box made of sheet metal cost ₹2820 at the rate of ₹30 per sq m. If the box is 5 m long and 4 m wide, find its height.
Answer» ong>Answer: Height is 3m Step-by-step explanation: Area in sq meters sold in the sheet=2820/30=94 Area of rectangular base of the box=20 sq m If the box is horizontal & h is the height,the area covered by all the 6 sheets=4h+4h+40+5h+5h=94 18H+ 40=94 18h=54 h=3 Height is 3 metres. If the box is kept vertically,the height becomes 5 mtrs & length & breath of base and top sheets will be 4 mtrs & 3 mtrs,each. 2 example 3 M height. Total surface area of a box=2[LH+2LB+2BH.(1), where L, B, and H are Length, Breadth, and Height respectively: assume X M height, then total surface area per equation 1, = 2[(5X)+(54)+(4X)]…. (2) however from the total cost and sheet METAL rate, we know the total area as total cost/ cost per square meter,=2820/30=94 sq. Meters hence equation 2=94, solving for X, we get X=3. 3 example sheet of metal used for box=2820/30= 94 m sheet of metal used for top and bottom of box=254=40 m sheet of metal used for all 4 sides and height=94–40=54 m All 4 sides=2(5+4)=18 m Height=54/18=3 m 4 example The total surface area of the box is 2820/30 = 94 sq.m. If the height of the box is h , the surface area of the box is 2 × 5×4 + 2 × 5×h + 2 × 4×h. = 40 +10h + 8h = 18h+40. Therefore 18h + 40 = 94 Or 18h = 94 - 40 = 54. Or h = 54/18 =3 m. Therefore height of the box is 3 meters. 5 example Total metal used = 2820÷30 I.e. 94m Metal used in base and top = 2×5×4 I.e. 40m Remaining metal = 94-40 I.e. 54m Metal used in sides of the box is = 2×(5+4) (per side) I.e. 18m Hence height of the box is 54÷18 I.e 3m 6 example Total surface area of the CUBOID =2(lb+bh+hl) = 2820/30= 94 here l= 5-m; b= 4-m h = ? So 2(20+4h+5h)= 94 So 9h+20= 47 9h= 27- m So h= 3- m Therefore the height of the box = 3- m 7 example For ₹ 30 ……………..area of metal sheet is 1 sq.m For ₹ 2820………………………………………………………? 2820/30=94 sq.m Total surface area of box=2(l×b+b×h+h×l)=94 2(5×4+4×h+h×5)=94 20+9h=47 9h=27 h=27/9=3 m 8 example Total cost/ rate is area of sheet required.2820/30=94. Less top and bottom of 5x4 size is 40. Balance is 54 sq m. Total 4 sides with height h is 5xh+5xh+4xh+4xh=18h. So height is 54/18=3 mtr 9 example Total metal used = 2820/30= 94 m Total surface area= 2(lb+bh+lh) 2(54+4h+5h)=94 2(20+9h)=94 40+18h=94 h= 54/18=3 m 10 example Area of sheet=2820/30=94 sq m Top & bottom area = 5×4=20sq m H=(94–20×2)/2/(5+4)=3m Please mark me as brainliest Thank you and have a nice day

49.

A box made of sheet metal cost ₹2820 at the rate of ₹30 per sq m. If the box is 5 m long and 4 m wide, find its height.

Answer»

ong>Answer:

Height is 3m

Step-by-step explanation:

Area in sq meters sold in the sheet=2820/30=94

Area of rectangular base of the box=20 sq m

If the box is horizontal & h is the height,the area covered by all the 6 sheets=4h+4h+40+5h+5h=94

18H+ 40=94

18h=54

h=3

Height is 3 metres.

If the box is kept vertically,the height becomes 5 mtrs & length & breath of base and top sheets will be 4 mtrs & 3 mtrs,each.

2 example

3 M height.

Total surface area of a box=2[LH+2LB+2BH.(1), where L, B, and H are Length, Breadth, and Height respectively:

assume X M height, then total surface area per equation 1, = 2[(5*X)+(5*4)+(4*X)]…. (2)

however from the total cost and sheet METAL rate, we know the total area as total cost/ cost per square meter,=2820/30=94 sq. Meters

hence equation 2=94, solving for X, we get X=3.

3 example

sheet of metal used for box=2820/30= 94 m

sheet of metal used for top and bottom of box=2*5*4=40 m

sheet of metal used for all 4 sides and height=94–40=54 m

All 4 sides=2(5+4)=18 m

Height=54/18=3 m

4 example

The total surface area of the box is 2820/30 = 94 sq.m.

If the height of the box is h , the surface area of the box is

2 × 5×4 + 2 × 5×h + 2 × 4×h. = 40 +10h + 8h = 18h+40.

Therefore 18h + 40 = 94

Or 18h = 94 - 40 = 54.

Or h = 54/18 =3 m.

Therefore height of the box is 3 meters.

5 example

Total metal used = 2820÷30

I.e. 94m

Metal used in base and top = 2×5×4

I.e. 40m

Remaining metal = 94-40

I.e. 54m

Metal used in sides of the box is = 2×(5+4) (per side)

I.e. 18m

Hence height of the box is 54÷18

I.e 3m

6 example

Total surface area of the CUBOID =2(lb+bh+hl) = 2820/30= 94

here l= 5-m;

b= 4-m

h = ?

So 2(20+4h+5h)= 94

So 9h+20= 47

9h= 27- m

So h= 3- m

Therefore the height of the box = 3- m

7 example

For ₹ 30 ……………..area of metal sheet is 1 sq.m

For ₹ 2820………………………………………………………?

2820/30=94 sq.m

Total surface area of box=2(l×b+b×h+h×l)=94

2(5×4+4×h+h×5)=94

20+9h=47

9h=27

h=27/9=3 m

8 example

Total cost/ rate is area of sheet required.2820/30=94. Less top and bottom of 5x4 size is 40. Balance is 54 sq m. Total 4 sides with height h is 5xh+5xh+4xh+4xh=18h. So height is 54/18=3 mtr

9 example

Total metal used = 2820/30= 94 m

Total surface area= 2(lb+bh+lh)

2(5*4+4h+5h)=94

2(20+9h)=94

40+18h=94

h= 54/18=3 m

10 example

Area of sheet=2820/30=94 sq m

Top & bottom area = 5×4=20sq m

H=(94–20×2)/2/(5+4)=3m

Please mark me as brainliest

Thank you and have a nice day

Discussion

50.	Find join eqesion of above qeastion
Answer» ONG>Answer: which class dear? Step-by-step EXPLANATION: follow me and GIVE THANKS plZ ❤️ and mark me BRAINLIEST answer

50.

Find join eqesion of above qeastion

Answer» ONG>Answer:

which class dear?

Step-by-step EXPLANATION:

follow me and GIVE THANKS plZ ❤️ and mark me BRAINLIEST answer

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