332354 + Interview Questions in Secondary School in Math

1.	V3+1Efind the value of 4r + 2x2 - 8x +7
Answer» ANSWER: its not CLEAR mate Step-by-step EXPLANATION:

1.

V3+1Efind the value of 4r + 2x2 - 8x +7

Answer»

ANSWER:

its not CLEAR mate

Step-by-step EXPLANATION:

Discussion

2.	From cow we get milk. From hen we get egg. question is from whom we get both milk and egg
Answer» Step-by-step explanation: Monotremes is the species that SATISFIES both things. Basically they are mammals that lay eggs and produce milk through mammary glands.The existing MONOTREME species are the PLATYPUS and FOUR species of echidnas.

2.

From cow we get milk. From hen we get egg. question is from whom we get both milk and egg

Answer»

Step-by-step explanation:

Monotremes is the species that SATISFIES both things. Basically they are mammals that lay eggs and produce milk through mammary glands.The existing MONOTREME species are the PLATYPUS and FOUR species of echidnas.

Discussion

3.	How much should less is 24 km than42.6km
Answer» Answer: 18.6 km Step-by-step EXPLANATION:

3.

How much should less is 24 km than42.6km

Answer»

Answer:

18.6 km

Step-by-step EXPLANATION:

Discussion

4.	Find the value of k if X + 1 is a factor of x^2 + 8 x + k
Answer» K = 7 HOPE THIS COULD HELP!!!

4.

Find the value of k if X + 1 is a factor of x^2 + 8 x + k

Answer»

K = 7

HOPE THIS COULD HELP!!!

Discussion

5.	NDA ki teyaari k liye shii hai RS aggarwal ki book ya RD KI
Answer» RD sharma it has GREAT EXPLANATION

5.

NDA ki teyaari k liye shii hai RS aggarwal ki book ya RD KI

Answer»

RD sharma

it has GREAT EXPLANATION

Discussion

6.	Find sin pi by 12 (with steps)Will make u the brainliest..
Answer» Step-by-step explanation: Trigonometry Angles--Pi/12 cos(pi/(12)) = 1/4(sqrt(6)+sqrt(2)) (1) cos((5pi)/(12)) = 1/4(sqrt(6)-sqrt(2)) (2) COT(pi/(12)) = 2+sqrt(3) (3) cot((5pi)/(12)) = 2-sqrt(3) (4) csc(pi/(12)) = sqrt(6)+sqrt(2) (5) csc((5pi)/(12)) = sqrt(6)-sqrt(2) (6) sec(pi/(12)) = sqrt(6)-sqrt(2) (7) sec((5pi)/(12)) = sqrt(6)+sqrt(2) (8) sin(pi/(12)) = 1/4(sqrt(6)-sqrt(2)) (9) sin((5pi)/(12)) = 1/4(sqrt(6)+sqrt(2)) (10) tan(pi/(12)) = 2-sqrt(3) (11) tan((5pi)/(12)) = 2+sqrt(3). (12) These can be derived using sin(pi/(12)) = sin(pi/3-pi/4) (13) = -sin(pi/4)cos(pi/3)+sin(pi/3)cos(pi/4) (14) = -1/2sqrt(2)(1/2)+1/2sqrt(3)(1/2sqrt(2)) (15) = 1/4(sqrt(6)-sqrt(2)). (16) Similarly, cos(pi/(12)) = cos(pi/3-pi/4) (17) = cos(pi/4)cos(pi/3)-sin(pi/3)sin(pi/4) (18) = 1/2(1/2sqrt(2))+1/2sqrt(3)(-1/2sqrt(2)) (19) = 1/4(sqrt(6)+sqrt(2)). (20)

6.

Find sin pi by 12 (with steps)Will make u the brainliest..

Answer»

Step-by-step explanation:

Trigonometry Angles--Pi/12

cos(pi/(12)) = 1/4(sqrt(6)+sqrt(2))

(1)

cos((5pi)/(12)) = 1/4(sqrt(6)-sqrt(2))

(2)

COT(pi/(12)) = 2+sqrt(3)

(3)

cot((5pi)/(12)) = 2-sqrt(3)

(4)

csc(pi/(12)) = sqrt(6)+sqrt(2)

(5)

csc((5pi)/(12)) = sqrt(6)-sqrt(2)

(6)

sec(pi/(12)) = sqrt(6)-sqrt(2)

(7)

sec((5pi)/(12)) = sqrt(6)+sqrt(2)

(8)

sin(pi/(12)) = 1/4(sqrt(6)-sqrt(2))

(9)

sin((5pi)/(12)) = 1/4(sqrt(6)+sqrt(2))

(10)

tan(pi/(12)) = 2-sqrt(3)

(11)

tan((5pi)/(12)) = 2+sqrt(3).

(12)

These can be derived using

sin(pi/(12)) = sin(pi/3-pi/4)

(13)

= -sin(pi/4)cos(pi/3)+sin(pi/3)cos(pi/4)

(14)

= -1/2sqrt(2)(1/2)+1/2sqrt(3)(1/2sqrt(2))

(15)

= 1/4(sqrt(6)-sqrt(2)).

(16)

Similarly,

cos(pi/(12)) = cos(pi/3-pi/4)

(17)

= cos(pi/4)cos(pi/3)-sin(pi/3)sin(pi/4)

(18)

= 1/2(1/2sqrt(2))+1/2sqrt(3)(-1/2sqrt(2))

(19)

= 1/4(sqrt(6)+sqrt(2)).

(20)

Discussion

7.	Can anyone solve the 30th one I don’t understand it
Answer» HOPE it help u PLZ MARK it best NEED only 1 more best answer

7.

Can anyone solve the 30th one I don’t understand it

Answer»

HOPE it help u

PLZ MARK it best

NEED only 1 more best answer

Discussion

8.	The minimum value that f(X)=2x^2+8x-1
Answer» LET x=-1 2(-1)^2+8(-1)-1 2-8-1 -7

8.

The minimum value that f(X)=2x^2+8x-1

Answer»

LET x=-1

2(-1)^2+8(-1)-1

2-8-1

-7

Discussion

9.	Divide the polynomial (x)=x^3-3x^2+4x-12 by (x-3)
Answer» ANSWER: ANS of this QUES is above

9.

Divide the polynomial (x)=x^3-3x^2+4x-12 by (x-3)

Answer»

ANSWER:

ANS of this QUES is above

Discussion

10.	Prove that [x^a/x^b]^a square+ab+b square[x^b/x^c]^b square+bc+c square[x^c/x^a]^c square+ca+a square=1
Answer» Answer: LHS = RHS Step-by-step EXPLANATION: The solution is in the attached IMAGE. Hence proved

10.

Prove that [x^a/x^b]^a square+ab+b square[x^b/x^c]^b square+bc+c square[x^c/x^a]^c square+ca+a square=1

Answer»

Answer:

LHS = RHS

Step-by-step EXPLANATION:

The solution is in the attached IMAGE.

Hence proved

Discussion

11.	Find the value of a if x-a is a factor of x cube - a square x+x+2
Answer» HOPE THIS COULD HELP!!!

Discussion

12.	What is the value of(a) (b) (c) (d)
Answer» HII its tom85 =sin^2a + sin^2atan^2a =sin^2a(1 + tan^2a) =sin^2a(sec^2a) =sin^2a/cos^2a =tan^2a using 1+ tan^2a= sec^2a _________/\__________☺️ hope it MAY HELPS you DUDE

12.

What is the value of(a) (b) (c) (d)

Answer»

HII its tom85

=sin^2a + sin^2atan^2a

=sin^2a(1 + tan^2a)

=sin^2a(sec^2a)

=sin^2a/cos^2a

=tan^2a

using

1+ tan^2a= sec^2a

_________/\__________☺️

hope it MAY HELPS you DUDE

Discussion

13.	5x/3+(-3)/2=1/8 solve
Answer» $\frac{ \textbf{5x}}{ \textbf{3}} + \frac{\textbf{ - 3}}{\textbf{2}} = \frac{\textbf{1}}{\textbf{8}} \\ \\ \rightarrow \: \frac{\text{10x + ( - 9)}}{ \text{6}} = \frac{\text{1}}{\text{8}} \\ \\ \rightarrow \: \text{10x - 9} = \frac{6}{8} \\ \\ \rightarrow \: \text{10x} = \frac{6}{8} + 9 \\ \\ \rightarrow \: \text{10x} = \frac{6 + 54}{8} \\ \\ \rightarrow \: \text{x} = \frac{60}{8} \times \frac{1}{10} \\ \\ \rightarrow \: \text{x} = \frac{6}{8} \\ \\ \boxed{ \textbf{x} = \frac{ \textbf{6}}{ \textbf{8}} }$

13.

5x/3+(-3)/2=1/8 solve

Answer»

$\frac{ \textbf{5x}}{ \textbf{3}} + \frac{\textbf{ - 3}}{\textbf{2}} = \frac{\textbf{1}}{\textbf{8}} \\ \\ \rightarrow \: \frac{\text{10x + ( - 9)}}{ \text{6}} = \frac{\text{1}}{\text{8}} \\ \\ \rightarrow \: \text{10x - 9} = \frac{6}{8} \\ \\ \rightarrow \: \text{10x} = \frac{6}{8} + 9 \\ \\ \rightarrow \: \text{10x} = \frac{6 + 54}{8} \\ \\ \rightarrow \: \text{x} = \frac{60}{8} \times \frac{1}{10} \\ \\ \rightarrow \: \text{x} = \frac{6}{8} \\ \\ \boxed{ \textbf{x} = \frac{ \textbf{6}}{ \textbf{8}} }$

Discussion

14.	2/2sin^2 theta=2/2sin^2 theta-1
Answer» What's this FIRST of all FIX your QUESTION it is INVALID DUDE

Discussion

15.	the sum of the digits of a two-digit number is 12 if the number formed by reversing its digits is greater than the original number by 18 find the original number
Answer» Lets assume that One number = x other number = 12-x Now, 10(12-x) +x 120 - 10x +x 120-9x After REVERSING digits 10x + 12-x 9x + 12 Acc to the question the new number is 18 more than the original number , so 9x +12 = 18 + 120 -9x 18x = 126 x = 126/18 x = 7 other number = 12-7= 5 Verification: 5+7 =12 After reversing digits 75 = 18+57 So 75 is 18 more than 57. Hence verified

15.

the sum of the digits of a two-digit number is 12 if the number formed by reversing its digits is greater than the original number by 18 find the original number

Answer»

Lets assume that

One number = x

other number = 12-x

Now,

10(12-x) +x

120 - 10x +x

120-9x

After REVERSING digits

10x + 12-x

9x + 12

Acc to the question the new number is 18 more than the original number , so

9x +12 = 18 + 120 -9x

18x = 126

x = 126/18

x = 7

other number = 12-7= 5

Verification:

5+7 =12

After reversing digits

75 = 18+57

So 75 is 18 more than 57.

Hence verified

Discussion

16.	Problem:dilemma::Wind:cycloneMerit:acclaimGreenery: forestWinsome:charming
Answer» Answer: As Problem: dilemma, hence the correct answer is WINSOME: Charming. Here, the relation between the two words- problem and dilemma can be determined. They basically MEAN the same thing or better known as SYNONYMOUS words. Hence, we require to select an option that contains a pair of synonymous words. Here, only the LAST one is synonymous as winsome also MEANS charming.

16.

Problem:dilemma::Wind:cycloneMerit:acclaimGreenery: forestWinsome:charming

Answer»

Answer:

As Problem: dilemma, hence the correct answer is WINSOME: Charming.

Here, the relation between the two words- problem and dilemma can be determined. They basically MEAN the same thing or better known as SYNONYMOUS words.

Hence, we require to select an option that contains a pair of synonymous words. Here, only the LAST one is synonymous as winsome also MEANS charming.

Discussion

17.	Find general solution for cos3x=cosx
Answer» 3X = cosx cosx = 3x cos = 3x/x cos = 3

17.

Find general solution for cos3x=cosx

Answer»

3X = cosx

cosx = 3x

cos = 3x/x

cos = 3

Discussion

18.	3^-5.10^-5.125/5^-7.6^-5=?
Answer» Answer: 3937500 Step-by-step explanation: (-15)×(-50)×(-175)×(-30) 3937500 Ans. I HOPE this will HELP you☺

18.

3^-5.10^-5.125/5^-7.6^-5=?

Answer»

Answer:

3937500

Step-by-step explanation:

(-15)×(-50)×(-175)×(-30)

3937500

Ans.

I HOPE this will HELP you☺

Discussion

19.	Find the value of x^2-3x+6 at x=√2
Answer» ANSWER: HOPE it will HELP you MATE

19.

Find the value of x^2-3x+6 at x=√2

Answer»

ANSWER:

HOPE it will HELP you MATE

Discussion

20.	Find the value of x 9^x=27
Answer» Answer: 3/2 Step-by-step explanation: 9^x = 27 3^2x = 3^3 2x = 3 x = 3/2

20.

Find the value of x 9^x=27

Answer»

Answer:

3/2

Step-by-step explanation:

9^x = 27

3^2x = 3^3

2x = 3

x = 3/2

Discussion

21.	1,70,75,200 in words by using international system
Answer» ANSWER: you have , LIKE INDIAN SYSTEM

21.

1,70,75,200 in words by using international system

Answer»

ANSWER:

you have , LIKE INDIAN SYSTEM

Discussion

22.	54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780.find the bigger part
Answer» Answer: 34 Step-by-step explanation suppose 54 is divided into x and y x+y=54 .....(1) GIVEN; 10x+22y=780 ...(2) to eliminate x, multiply equation (1) by 10 we get, 10x+10y=540 ....(3) subtract equation (3) from equation(2) 12y=240 y= 20 substitute y=20 in equation (1) we get, x=34 the value of bigger PART is 34

22.

54 is to be divided into two parts such that the sum of 10 times the first and 22 times the second is 780.find the bigger part

Answer»

Answer:

34

Step-by-step explanation

suppose 54 is divided into x and y

x+y=54 .....(1)

GIVEN; 10x+22y=780 ...(2)

to eliminate x, multiply equation (1) by 10

we get,

10x+10y=540 ....(3)

subtract equation (3) from equation(2)

12y=240

y= 20

substitute y=20 in equation (1)

we get,

x=34

the value of bigger PART is 34

Discussion

23.	The area of a sure field is 5184m². A rectangular field, whose length is twice it's breadth, has its perimeter equal to the perimeter of the square field. Find the area of the rectangular field.
Answer» Step-by-step explanation: The ANSWER is as FOLLOWS. PLZ Mark as BRAINLIEST

23.

The area of a sure field is 5184m². A rectangular field, whose length is twice it's breadth, has its perimeter equal to the perimeter of the square field. Find the area of the rectangular field.

Answer»

Step-by-step explanation:

The ANSWER is as FOLLOWS. PLZ Mark as BRAINLIEST

Discussion

24.	Can you solve 3asqaure+7/6+8/3=0
Answer» ANSWER: HOPE it will HELP you MATE

24.

Can you solve 3asqaure+7/6+8/3=0

Answer»

ANSWER:

HOPE it will HELP you MATE

Discussion

25.	If x and (150-x)are two numbers such that their sum is 150 and the greaterof two numbers is9 times the smaller, find the numbers .
Answer» Answer: LET the smaller number be x let the GREATER number be 9x According to the question x+ 9x =150 10x = 150 x = 150 10 x = 15 Check 15+ (9×15)=150 15+135. =150 150. =150 LHS. = RHS

25.

If x and (150-x)are two numbers such that their sum is 150 and the greaterof two numbers is9 times the smaller, find the numbers .

Answer»

Answer:

LET the smaller number be x

let the GREATER number be 9x

According to the question

x+ 9x =150

10x = 150

x = 150

10

x = 15

Check

15+ (9×15)=150

15+135. =150

150. =150

LHS. = RHS

Discussion

26.	બાવર્ક કરી નાર,નાટકમાં રાજ કરીહરા ની મારવા
Answer» Answer: PLEASE WRITE again I can't UNDERSTAND it's not an maths question

26.

બાવર્ક કરી નાર,નાટકમાં રાજ કરીહરા ની મારવા

Answer»

Answer:

PLEASE WRITE again I can't UNDERSTAND it's not an maths question

Discussion

27.	A train covers a distance of 90 km at a uniform speed if the speed had been 15 km per hour more it would have taken half an hour less for the journey find the original speed of the train
Answer» Answer: Given, distance = 90 km let SPEED (original) = x km/h time taken to travel = 90/x hr ∴ New speed = (x+15) km/hr Time taken to travel = 90/(x+15) hr ∴ 90/x = 90/(x+15) + 1/2 ⇒ 90/x - 90/(x+15) = 1/2 ⇒ 90(1/x - 1/(x+15)) = 1/2 ⇒ x+15-x/x(x+15) = 1/2 ×1/90 ⇒ 15/x(x+15) = 180 ⇒ x(x+15) = 15 × 180 = 2700 ⇒ x² + 15x - 2700 = 0 →x² + 60X - 45x+2700 = 0 [Quadratic Equation] ⇒(x+60)(x-45) = 0 ⇒x = 45 or - 60 ∵ Speed can't be negative.. ∴ Original speed = 45km/hr

27.

A train covers a distance of 90 km at a uniform speed if the speed had been 15 km per hour more it would have taken half an hour less for the journey find the original speed of the train

Answer»

Answer:

Given, distance = 90 km

let SPEED (original) = x km/h

time taken to travel = 90/x hr

∴ New speed = (x+15) km/hr

Time taken to travel = 90/(x+15) hr

∴ 90/x = 90/(x+15) + 1/2

⇒ 90/x - 90/(x+15) = 1/2

⇒ 90(1/x - 1/(x+15)) = 1/2

⇒ x+15-x/x(x+15) = 1/2 ×1/90

⇒ 15/x(x+15) = 180

⇒ x(x+15) = 15 × 180 = 2700

⇒ x² + 15x - 2700 = 0

→x² + 60X - 45x+2700 = 0 [Quadratic Equation]

⇒(x+60)(x-45) = 0

⇒x = 45 or - 60

∵ Speed can't be negative..

∴ Original speed = 45km/hr

Discussion

28.	In a lottery a person chooses 6 different numbers from 1 to 20. If these numbers match with the six numbers chosen by the lottery committee then he wins the lottery. What is his probability of winning the prize
Answer» ANSWER: His PROBABILITY is 6. 20

28.

In a lottery a person chooses 6 different numbers from 1 to 20. If these numbers match with the six numbers chosen by the lottery committee then he wins the lottery. What is his probability of winning the prize

Answer»

ANSWER:

His PROBABILITY is 6.

20

Discussion

29.	In a group,150 students know hindi & 60 know english and 10 know both hindi & english.If there are 30 students who know neither of the two languages,how many students are there in the group?
Answer» Answer: 150+60+10+30=250 STUDENTS

29.

In a group,150 students know hindi & 60 know english and 10 know both hindi & english.If there are 30 students who know neither of the two languages,how many students are there in the group?

Answer»

Answer:

150+60+10+30=250 STUDENTS

Discussion

30.	In a 100 m race, if x gives y a start of 25 m, then x wins the race by 5 second. Alternatively, if x gives y a start of 50 m the race ends in a dead heat. How long does x take to run 200 m?
Answer» Answer: 10s Step-by-step explanation: Because 100 need 5s so,200 is 2100 THEREFORE 25IS answer that is 10

30.

In a 100 m race, if x gives y a start of 25 m, then x wins the race by 5 second. Alternatively, if x gives y a start of 50 m the race ends in a dead heat. How long does x take to run 200 m?

Answer»

Answer:

10s

Step-by-step explanation:

Because 100 need 5s so,200 is 2*100 THEREFORE 2*5IS answer that is 10

Discussion

31.	In a farm there are cows and hens. If heads are counted there are 180, if legs are counted there are 420. The number of cows in the farm is
Answer» ANSWER: let the no cows is x and the no. of hen is y x+y=180--i 4x+2y=420--ii(cows have 4 legs,HENS have 2 legs) i×2-ii 2x+2y=360 4x+2y=420 cancelled 2y -2x=-60 x=30 cows are 30 hens are 150

31.

In a farm there are cows and hens. If heads are counted there are 180, if legs are counted there are 420. The number of cows in the farm is

Answer»

ANSWER:

let the no cows is x

and the no. of hen is y

x+y=180--i

4x+2y=420--ii(cows have 4 legs,HENS have 2 legs)

i×2-ii

2x+2y=360

4x+2y=420

cancelled 2y

-2x=-60

x=30

cows are 30 hens are 150

Discussion

32.	Sum of a fraction and thrice of its reciprocal is always
Answer» Answer: (1+n^4)/n Step-by-step EXPLANATION: Assume the fraction be (1/a) THRICE of its RECIPROCAL = a^3 1/a +a^3 = (1+a^4)/a

32.

Sum of a fraction and thrice of its reciprocal is always

Answer»

Answer:

(1+n^4)/n

Step-by-step EXPLANATION:

Assume the fraction be (1/a)

THRICE of its RECIPROCAL = a^3

1/a +a^3 = (1+a^4)/a

Discussion

33.	Radius of circle inscribed in right triangle
Answer» $\huge{\mathfrak{\purple{Answer}}}$ ->> RADIUS of INCIRCLE =area of triangle/s. Where s=(a+b+c)/2. If sides of a RIGHT triangle are 3 cm ,4 cm and. 5CM. Find the

33.

Radius of circle inscribed in right triangle

Answer»

$\huge{\mathfrak{\purple{Answer}}}$

->>

RADIUS of INCIRCLE =area of triangle/s. Where s=(a+b+c)/2. If sides of a RIGHT triangle are 3 cm ,4 cm and. 5CM. Find the

Discussion

34.	What happened aliens live in moon
Answer» ℍ ℰ ℒ ℒ ᝪ ℱ ℛ ℕ ⅅ Answer: The Moon MIGHT once have been home to aliens. Extraterrestrial life might have made its WAY to our nearest neighbour after a meteorite blast, scientists have suggested. And when it did, the atmosphere might have been far more habitable than it is today, ready to support life, if only briefly. That is according to two senior planetary researchers who found that the Moon might have had conditions to support SIMPLE LIFEFORMS some four billion years ago. The same conditions might have arrived during a peak of volcanic activity 3.5 billion years ago, claim the researchers. hope it help yours ✌✌

34.

What happened aliens live in moon

Answer»

ℍ ℰ ℒ ℒ ᝪ ℱ ℛ ℕ ⅅ

Answer:

The Moon MIGHT once have been home to aliens.

Extraterrestrial life might have made its WAY to our nearest neighbour after a meteorite blast, scientists have suggested. And when it did, the atmosphere might have been far more habitable than it is today, ready to support life, if only briefly.

That is according to two senior planetary researchers who found that the Moon might have had conditions to support SIMPLE LIFEFORMS some four billion years ago. The same conditions might have arrived during a peak of volcanic activity 3.5 billion years ago, claim the researchers.

hope it help yours ✌✌

Discussion

35.	HAone kilometer is equal to dash kilo
Answer» ANSWER: YAA you are right Step-by-step EXPLANATION:

35.

HAone kilometer is equal to dash kilo

Answer»

ANSWER:

YAA you are right

Step-by-step EXPLANATION:

Discussion

36.	Plz solve this question. I will mark brainliest!!!!
Answer» Step-by-step explanation: REFER to the ATTACHMENT i hope U got it.....

36.

Plz solve this question. I will mark brainliest!!!!

Answer»

Step-by-step explanation:

REFER to the ATTACHMENT

i hope U got it.....

Discussion

37.	Werewtre)e rewhichto litres and 748 litres of water respectivelya measure the water of these three cans exactly
Answer» ANSWER: PLEASE WRITE again I can't UNDERSTAND

37.

Werewtre)e rewhichto litres and 748 litres of water respectivelya measure the water of these three cans exactly

Answer»

ANSWER:

PLEASE WRITE again I can't UNDERSTAND

Discussion

38.	Rationalnumbersbetween -1/2 and 3/5
Answer» The RATIONAL NUMBERS between -1/2 and 3/5 are... 0, 1/5, 2/5

38.

Rationalnumbersbetween -1/2 and 3/5

Answer»

The RATIONAL NUMBERS between -1/2 and 3/5 are...

0, 1/5, 2/5

Discussion

39.	Find the integer that must subtracted from -5to -11
Answer» ANSWER: -5-11 -16.....................

39.

Find the integer that must subtracted from -5to -11

Answer»

ANSWER:

-5-11

-16.....................

Discussion

40.	Does ratio and fractions are equal?
Answer» Two ratios that have the same value are called equivalent ratios. To FIND an equivalent RATIO, MULTIPLY or divide both quantities by the same number. It is the same process as FINDING equivalent fractions.

Discussion

41.	Simplify the question quickly please
Answer» Just TAKE a LOOK at this .does this NEED to be SIMPLIFIED more?

Discussion

42.	(a-6) (a-2).identities :
Answer» Step-by-step EXPLANATION: (a - 6) (a - 2) $= {a}^{2} - 8a + 12$

42.

(a-6) (a-2).identities :

Answer»

Step-by-step EXPLANATION:

(a - 6) (a - 2)

$= {a}^{2} - 8a + 12$

Discussion

43.	Which is the greatest whole number
Answer» ......... $\huge\bold\pink{hEllO ! !}$ _______________________________ →So, 0, 1, 2, 3,….,10 are called whole numbers. →So, 1 is the smallest natural number →0 is the smallest whole number. →But there is no largest whole number or natural number because each number has its SUCCESSOR.

43.

Which is the greatest whole number

Answer»

......... $\huge\bold\pink{hEllO ! !}$

_______________________________

→So, 0, 1, 2, 3,….,10 are called whole numbers.

→So, 1 is the smallest natural number

→0 is the smallest whole number.

→But there is no largest whole number or natural number because each number has its SUCCESSOR.

Discussion

44.	without actual division show that 2X2 by 4 minus 6 x raise to power 3 + 3 X raise to power 2 + 3 x minus 2 is exactly divisible by X raise to power 2 - 3 x + 2
Answer» Answer: Step-by-step explanation: without actual division, prove that (2x^4-6x^3+3x^3+3x-2)is exactly DIVISIBLE by(x^2-3x+2). (note : here'^'this SYMBOL is being referred as raised to.) The answer: 2x^4 - 6x^3 + 3x^3 + 3x - 2 Combine like terms to simplify 2x^4 - 3x^3 + 3x - 2 Factor the polynomial 2x^4 - 3x^3 + 3x - 2 Use the "RATIONAL ROOT TEST" to find any POSSIBLE rational roots. (a_n)x^n + (a_n-1)x^(n-1) + . . . + (a_1)x + a_0 1. find a_n and a_0 a_n (the first coefficient) = 2 a_0 (the CONSTANT) = 2 2. Determine factors of a_n and a_0 Factors of a_n = 1, 2 Factors of a_0 = 1, 2 3. Determine possible rational roots (prelim) Possible rational roots = ±{1/1, ½, 2/1, 2/2} Eliminate duplicates (final) Possible rational roots = ±{1, ½, 2} 4. Determine if any of the possible rational roots are actually roots where f(x) = 0 Is x = +1 a rational root ? f(x) = 2x^4 - 3x^3 + 3x - 2 f(x) = 21^4 - 31^3 + 31 - 2 f(x) = 2 - 3 + 3 - 2 f(x) = 0 YES, x = +1 is a ROOT Is x = -1 a rational root ? f(x) = 2x^4 - 3x^3 + 3x - 2 f(x) = 2(-1)^4 - 3(-1)^3 + 3(-1) - 2 f(x) = 21 - 3(-1) + 3*(-1) - 2 f(x) = 2 + 3 - 3 - 2 f(x) = 0 YES, x = -1 is a ROOT

44.

without actual division show that 2X2 by 4 minus 6 x raise to power 3 + 3 X raise to power 2 + 3 x minus 2 is exactly divisible by X raise to power 2 - 3 x + 2

Answer»

Answer:

Step-by-step explanation:

without actual division, prove that (2x^4-6x^3+3x^3+3x-2)is exactly DIVISIBLE by(x^2-3x+2).

(note : here'^'this SYMBOL is being referred as raised to.)

The answer:

2x^4 - 6x^3 + 3x^3 + 3x - 2

Combine like terms to simplify

2x^4 - 3x^3 + 3x - 2

Factor the polynomial

2x^4 - 3x^3 + 3x - 2

Use the "RATIONAL ROOT TEST" to find any POSSIBLE rational roots.

(a_n)x^n + (a_n-1)x^(n-1) + . . . + (a_1)x + a_0

1. find a_n and a_0

a_n (the first coefficient) = 2

a_0 (the CONSTANT) = 2

2. Determine factors of a_n and a_0

Factors of a_n = 1, 2

Factors of a_0 = 1, 2

3. Determine possible rational roots

(prelim) Possible rational roots = ±{1/1, ½, 2/1, 2/2}

Eliminate duplicates

(final) Possible rational roots = ±{1, ½, 2}

4. Determine if any of the possible rational roots are actually roots where f(x) = 0

Is x = +1 a rational root ?

f(x) = 2x^4 - 3x^3 + 3x - 2

f(x) = 2*1^4 - 3*1^3 + 3*1 - 2

f(x) = 2 - 3 + 3 - 2

f(x) = 0

YES, x = +1 is a ROOT

Is x = -1 a rational root ?

f(x) = 2x^4 - 3x^3 + 3x - 2

f(x) = 2*(-1)^4 - 3*(-1)^3 + 3*(-1) - 2

f(x) = 2*1 - 3*(-1) + 3*(-1) - 2

f(x) = 2 + 3 - 3 - 2

f(x) = 0

YES, x = -1 is a ROOT

Discussion

45.	If the 1st term of the ap is 7 and13" term is 135. Find the sum of13 terms of the sequence
Answer» ANSWER: 923 Step-by-step EXPLANATION: here is UR answer REFER it in attached picture

45.

If the 1st term of the ap is 7 and13" term is 135. Find the sum of13 terms of the sequence

Answer»

ANSWER:

923

Step-by-step EXPLANATION:

here is UR answer

REFER it in attached picture

Discussion

46.	(y=2x-3y=-x+3shahagoa
Answer» ANSWER : x = 0, y = 3 or - 3 Step-by-step explanation : y = 2X + 3 ...[1] y = - x + 3 ...[2] From [1] & [2], we get 2x + 3 = - x + 3 2x + x = 3 - 3 3x = 0 x = 0/3 x = 0 Put this VALUE in [2], we get y = - (0) + 3 y = - 0 + 3 y = 3 Put this value in [1], we get y = 2(0) - 3 y = 0 - 3 y = - 3

46.

(y=2x-3y=-x+3shahagoa

Answer»

ANSWER :

x = 0, y = 3 or - 3

Step-by-step explanation :

y = 2X + 3 ...[1]

y = - x + 3 ...[2]

From [1] & [2], we get

2x + 3 = - x + 3

2x + x = 3 - 3

3x = 0

x = 0/3

x = 0

Put this VALUE in [2], we get

y = - (0) + 3

y = - 0 + 3

y = 3

Put this value in [1], we get

y = 2(0) - 3

y = 0 - 3

y = - 3

Discussion

47.	Medicine is packed in boxes each waiting 5 kg 200 gram how many such boxes can be loaded in a van which cannot be Carried beyond 260kg60 kg
Answer» ANSWER: answer =50 Step-by-step explanation: LETS TAKE 5kg200gram into 5.2 then divide 5.2 with 260 .Answer is 50

47.

Medicine is packed in boxes each waiting 5 kg 200 gram how many such boxes can be loaded in a van which cannot be Carried beyond 260kg60 kg

Answer»

ANSWER:

answer =50

Step-by-step explanation:

LETS TAKE 5kg200gram into 5.2 then divide 5.2 with 260 .Answer is 50

Discussion

48.	Define Indians, what do they do what are they?
Answer» Answer: indians- the person who live in the BRAVE nation india those people's are INDIAN.. What are they.. indians are at second no at population.. because of no management of birth rate... (it's my THINK..BRO)

48.

Define Indians, what do they do what are they?

Answer»

Answer:

indians- the person who live in the BRAVE nation india those people's are INDIAN..

What are they..

indians are at second no at population..

because of no management of birth rate...

(it's my THINK..BRO)

Discussion

49.	Solve this pair of linear equations 10p+15q=65 and 10p-8q=-4 by using elimination method..Whole solutionStep by step
Answer» Answer: q=3 p=2 Step-by-step explanation: 10p+15q=65 10p-8q= -4 to ELIMINATE p; subtract EQUATION (2) from (1) 23q=69 q=3 substitute q=3 in equation(2) 10p-8(3)= -4 10p-24= -4 10p=20 p=2

49.

Solve this pair of linear equations 10p+15q=65 and 10p-8q=-4 by using elimination method..Whole solutionStep by step

Answer»

Answer:

q=3

p=2

Step-by-step explanation:

10p+15q=65

10p-8q= -4

to ELIMINATE p;

subtract EQUATION (2) from (1)

23q=69

q=3

substitute q=3 in equation(2)

10p-8(3)= -4

10p-24= -4

10p=20

p=2

Discussion

50.	2 numers are such that the ratio between them is 3:5. if each is increased by the ratio between the new number is 5:7 . find the original numer
Answer» ANSWER: YO Step-by-step EXPLANATION: yo this and TBAT is your answer

50.

2 numers are such that the ratio between them is 3:5. if each is increased by the ratio between the new number is 5:7 . find the original numer

Answer»

ANSWER:

YO

Step-by-step EXPLANATION:

yo this and TBAT is your answer

Discussion

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