332354 + Interview Questions in Secondary School in Math

1.	What is the additive inverse of 22
Answer» ANSWER: ADDITIVE INVERSE of 22 is -22

1.

What is the additive inverse of 22

Answer»

ANSWER:

ADDITIVE INVERSE of 22 is -22

Discussion

2.	Evuluate sum \|38-50\|+\|7-4\|
Answer» HEY mate ANSWER: $38 - 50 + 7 - 4$ $45 - 54$ $9$ I hope it helps u PLA MARK as brainlist

2.

Evuluate sum |38-50|+|7-4|

Answer»

HEY mate

ANSWER:

$38 - 50 + 7 - 4$

$45 - 54$

$9$

I hope it helps u

PLA MARK as brainlist

Discussion

3.	There are 8.4 x 1022 free electrons per cm incurrent in the wire is 0.21 A(e = 1.6 x 10-19 C). Then the drifts velocity ofelectrons in a copper wire of 1 mm2 cross section,will be :-(1) 2.12 x 10-6 m/s (2) 0.78 x 10-5 m/s(3) 1.56 x 10-6 m/s (4) none of theseplss give the whole calculation
Answer» Answer: 4 Step-by-step explanation: current, i equal to 1A Area of cross -section A = 1 millimeters square = 1 × 10 Ka power -6 meter square length of the conductor = l Also Mass of COPPER wire = volume into density m =A×L×P=》m=Al×9000 we know that the NUMBER of ATOMS in molecular mass, M=NA therefore No. of atoms in mass, m,N= (NA/M )m where NA is known as Avogadaro no. and is equal to 6×10 Ka power 23 =》N=(NA/M)m=》N=(NA/M)×A×l×9000 Also, it is GIVEN that No. of free electron =No. of atom Let n be the no. of free electron per unit volume n=No. of electron/volume =NA×A×l×9000/M×A×like NA×9000/m=6×10 Ka power 23/63.5× 10 Ka power -23 therefore i=VdnAe=》1/6×10ka power 23×9000/63.5×10ka power-3 ×10ka power-6×1.6×10 Ka power -19=63.5×10ka power-3/6×10 Ka power 23×9000×10ka power -6×1.6×10ka power -19=63.5×10ka power -3/6×10 Ka power 26×9×10ka power -6×1.6×10ka power -19=63.5×10ka power -3/6×9×16=0.073×10 Ka power -3 m/s=0.073 m/ s so the answer is 4

3.

There are 8.4 x 1022 free electrons per cm incurrent in the wire is 0.21 A(e = 1.6 x 10-19 C). Then the drifts velocity ofelectrons in a copper wire of 1 mm2 cross section,will be :-(1) 2.12 x 10-6 m/s (2) 0.78 x 10-5 m/s(3) 1.56 x 10-6 m/s (4) none of theseplss give the whole calculation

Answer»

Answer:

4

Step-by-step explanation:

current, i equal to 1A

Area of cross -section A =

1 millimeters square = 1 ×

10 Ka power -6 meter square

length of the conductor = l

Also

Mass of COPPER wire = volume into density

m =A×L×P=》m=Al×9000

we know that the NUMBER of ATOMS in molecular mass, M=NA

therefore No. of atoms in mass, m,N= (NA/M )m

where NA is known as Avogadaro no. and is equal to 6×10 Ka power 23 =》N=(NA/M)m=》N=(NA/M)×A×l×9000

Also, it is GIVEN that

No. of free electron =No. of atom

Let n be the no. of free electron per unit volume

n=No. of electron/volume =NA×A×l×9000/M×A×like

NA×9000/m=6×10 Ka power 23/63.5× 10 Ka power -23

therefore i=VdnAe=》1/6×10ka power 23×9000/63.5×10ka power-3 ×10ka power-6×1.6×10 Ka power -19=63.5×10ka power-3/6×10 Ka power 23×9000×10ka power -6×1.6×10ka power -19=63.5×10ka power -3/6×10 Ka power 26×9×10ka power -6×1.6×10ka power -19=63.5×10ka power -3/6×9×16=0.073×10 Ka power -3 m/s=0.073 m/ s

so the answer is 4

Discussion

4.	Find the roots of the 2x^2-x+1/8 =0?
Answer» $\huge \mathfrak{hey \: mate}$ FIND the ROOTS of the 2x^2-x+1/8 =0? ANSWER: 2x²- x+1/8=0 (16x²-8x+1)/8=0 16x²-8x+1=0 16x²-(4+4)x-1=0 16x²-4x-4x-1=0 4x(4x-1)+(4x-1)=0 (4x-1)(4x+1) $huge \mathfrak {hope \: this \: helps}$ ✨✨✨

4.

Find the roots of the 2x^2-x+1/8 =0?

Answer»

$\huge \mathfrak{hey \: mate}$

FIND the ROOTS of the 2x^2-x+1/8 =0?

ANSWER: 2x²- x+1/8=0

(16x²-8x+1)/8=0

16x²-8x+1=0

16x²-(4+4)x-1=0

16x²-4x-4x-1=0

4x(4x-1)+(4x-1)=0

(4x-1)(4x+1)

$huge \mathfrak {hope \: this \: helps}$

✨✨✨

Discussion

5.	Plz Solve The 16 bit
Answer» ANSWER: It is a FORUMALA. No. Of SUBSETS =2^n where n is no. Of elements of the SET.

5.

Plz Solve The 16 bit

Answer»

ANSWER:

It is a FORUMALA. No. Of SUBSETS =2^n where n is no. Of elements of the SET.

Discussion

6.	What is the additive inverse inverse of - 33
Answer» ANSWER: ADDITIVE INVERSE of-33 is 33

6.

What is the additive inverse inverse of - 33

Answer»

ANSWER:

ADDITIVE INVERSE of-33 is 33

Discussion

7.	Evuluate sum -\|38-50\|+\|7-4\|
Answer» hey mate. Answer: $- 38 + 50 + 7 - 4$ $- 41 + 50 + 7$ $- 41 + 57$ $16$ I hope it HELPS U pls mark as BRAINLIST

7.

Evuluate sum -|38-50|+|7-4|

Answer»

hey mate.

Answer:

$- 38 + 50 + 7 - 4$

$- 41 + 50 + 7$

$- 41 + 57$

$16$

I hope it HELPS U

pls mark as BRAINLIST

Discussion

8.	Check whether (28)n can rnd with zero for any natural number
Answer» ANSWER: HELLO DEAR User__________ Here is Your Answer...!! ____________________ STEP by step solution: $we \ have \ to \ check \ 28^{n} \ end \ with \ digit \ zero \ for \ any \ natural \ number.\\\\ To \ ends \ with \ digit \ 0, \ it \ should \ be \ divisible \ by \ (2 \times5) \ for \ any \ natural \ no.\\\\but \ here \ 28^{n}=(4 \times7)^{n}\\\\so \ it \ will \ not \ end \ with \ for \ any \ natural \ number.$ Hope it is clear to you.

8.

Check whether (28)n can rnd with zero for any natural number

Answer»

ANSWER:

HELLO DEAR User__________

Here is Your Answer...!!

____________________

STEP by step solution:

$we \ have \ to \ check \ 28^{n} \ end \ with \ digit \ zero \ for \ any \ natural \ number.\\\\ To \ ends \ with \ digit \ 0, \ it \ should \ be \ divisible \ by \ (2 \times5) \ for \ any \ natural \ no.\\\\but \ here \ 28^{n}=(4 \times7)^{n}\\\\so \ it \ will \ not \ end \ with \ for \ any \ natural \ number.$

Hope it is clear to you.

Discussion

9.	Plz Solve The 13 bit
Answer» The ANSWER for the above QUESTION is that the answer is 1.625 .

Discussion

10.	If interest rates are 12% every six months, then what will be the annual effective rate of interest?
Answer» the EFFECTIVE RATE of interest is 6% please mark as brainliest

10.

If interest rates are 12% every six months, then what will be the annual effective rate of interest?

Answer»

the EFFECTIVE RATE of interest is 6%

please mark as brainliest

Discussion

11.	(2a+3b)² - 4c²factroize
Answer» Here's the FACTORISATION: ( 2A + 3b )^2 - 4c^2 we know that, x^2 - y^2 = (x-y)(x+y) so, (2a+3b)^2 - 4c^2 =(2a+3b)^2 - (2c)^2 =(2a+3b+2c)(2a+3b-2c) THUS FACTORIZE...

11.

(2a+3b)² - 4c²factroize

Answer»

Here's the FACTORISATION:

( 2A + 3b )^2 - 4c^2

we know that,

x^2 - y^2 = (x-y)(x+y)

so,

(2a+3b)^2 - 4c^2

=(2a+3b)^2 - (2c)^2

=(2a+3b+2c)(2a+3b-2c)

THUS FACTORIZE...

Discussion

12.	What is the multiple inverse of minus 35
Answer» PLUS 35 hope it HELPS you....

12.

What is the multiple inverse of minus 35

Answer»

PLUS 35

hope it HELPS you....

Discussion

13.	Check wether301 is a sum of the givenAP5,1,19,23,-------------------
Answer» Answer: ur SERIES is not an AP because the COMMON DIFFERENCE is not eaual

13.

Check wether301 is a sum of the givenAP5,1,19,23,-------------------

Answer»

Answer:

ur SERIES is not an AP because the COMMON DIFFERENCE is not eaual

Discussion

14.	The number of ways of choosing 4 cardsfrom a pack of 52 playing cards such that6 four cards belong to the same suit is
Answer» there are FOUR suits in a deck of 52 cards. clubs , spades, DIAMONDS and hearts. case 1. we want all 4 from the same suit. i.e either of hearts or of clubs or of diamonds or of spades. no of ways of piking 4 cards from clubs= no of ways of PICKING 4 cards from spades= no of ways of piking 4 cards from hearts= no of ways of piking 4 cards from diamonds. no of ways of piking 4 cards from say hearts are 13C4. *so total no of ways of picking 4 cards where all are of same suit= 13C4 +13C4+ 13C4+ 13C4 = 4(13C4). case 2 we want all 4 from different suits that is possible in only one WAY . if one card is from hearts one is from clubs one is from diamonds , one is from spades = so total no of ways = 13C1 13C1 13C1* 13C1 = (13C1)^4 = 13^4**

14.

The number of ways of choosing 4 cardsfrom a pack of 52 playing cards such that6 four cards belong to the same suit is

Answer»

there are FOUR suits in a deck of 52 cards. clubs , spades, DIAMONDS and hearts.

case 1. we want all 4 from the same suit. i.e either of hearts or of clubs or of diamonds or of spades.

no of ways of piking 4 cards from clubs= no of ways of PICKING 4 cards from spades= no of ways of piking 4 cards from hearts= no of ways of piking 4 cards from diamonds.

no of ways of piking 4 cards from say hearts are 13C4.

so total no of ways of picking 4 cards where all are of same suit= 13C4 +13C4+ 13C4+ 13C4 = 4*(13C4).

case 2 we want all 4 from different suits that is possible in only one WAY . if one card is from hearts one is from clubs one is from diamonds , one is from spades =

so total no of ways = 13C1 *13C1* 13C1* 13C1 = (13C1)^4 = 13^4

Discussion

15.	Plz Solve The 10 Bit
Answer» HEY MATE, the above PIC is UR SOLN.

15.

Plz Solve The 10 Bit

Answer»

HEY MATE, the above PIC is UR SOLN.

Discussion

16.	Plz Solve The 9 Bit
Answer» Answer: every bit has yes as its answer. Step-by-step explanation: i) u know that 1,2,3,4... are rational numbers. hence in the set of rational numbers (B) the nos," 1,2,3,4" do COME(A). ii) Here, the demand in set A is of PRIME number. Also, in set (B) ; condition given is 2n, where n=1,2,3,4.. . After putting various values of "n" u get a prime no. iii) Here, we are specific with the elements- (-1),1 and 3. And in the set(B) we r given with an equation whose zeroes are the following numbers. Just keep 2-3 values of x and you'll get the elements of set(A). iv)This one is the easiest! See in (B) set , the ELEMENT should be a divisor of 60. And LUCKILY, all the elements in (A) set are "divisors of 60". Hope it helps..

16.

Plz Solve The 9 Bit

Answer»

Answer:

every bit has yes as its answer.

Step-by-step explanation:

i) u know that 1,2,3,4... are rational numbers. hence in the set of rational numbers (B) the nos," 1,2,3,4" do COME(A).

ii) Here, the demand in set A is of PRIME number. Also, in set (B) ; condition given is 2n, where n=1,2,3,4.. . After putting various values of "n" u get a prime no.

iii) Here, we are specific with the elements- (-1),1 and 3. And in the set(B) we r given with an equation whose zeroes are the following numbers. Just keep 2-3 values of x and you'll get the elements of set(A).

iv)This one is the easiest! See in (B) set , the ELEMENT should be a divisor of 60. And LUCKILY, all the elements in (A) set are "divisors of 60".

Hope it helps..

Discussion

17.	Plz Solve The 8 bit
Answer» ANSWER: START from SMALLEST to bigggest

17.

Plz Solve The 8 bit

Answer»

ANSWER:

START from SMALLEST to bigggest

Discussion

18.	N,n+4 n+12and n+16 is devisle by 5 where is any positive integer solution
Answer» Hey there !! Any positive integer is of the form 5q , 5q + 1 , 5q + 2 here , b = 5 r = 0 , 1 , 2 , 3 , 4 when r = 0 , n = 5q n = 5q ----> DIVISIBLE by 5 ===> [1] n + 4 = 5q + 4 [ not divisible by 5 ] n + 6 = 5q + 6 [ not divisible by 5 ] n + 12 = 5q + 12 [ not divisible by 5 ] ------------------------------------------- when r = 1 , n = 5q + 1 n = 5q + 1 [ not divisible by 5 ] n + 4 = 5q + 5 = 5 [Q+ 1] ----> divisible by 5 ===> [2] n + 6 = 5q + 7 [ not divisible by 5 ] n + 12 = 5q + 13 [ not divisible by 5 ] ---------------------------------------- when r = 3 , n = 5q + 3 n = 5q + 3 [ not divisible by 5 ] n + 4 = 5q + 7 [ not divisible by 5 ] n + 8 = 5q + 11 [ not divisible by 5 ] n + 6 = 5q + 9 [ not divisible by 5 ] n + 12 = 5q + 15 = 5 [ q + 3 ] ---> divisible by 5 ====> [3] ---------------------------------------------------- when r = 4 , n = 5q + 4 n = 5q + 4 [ not divisible by 5 ] n + 4 = 5q + 8 [ not divisible by 5 ] n + 6 = 5q + 10 = 5 [ q + 2 ] ---> divisible by 5 ====> [4] n + 12 = 5q + 16 [ not divisible by 5 ] from 1 , 2 , 3 , 4 its clear that one and only one out of n, n+4, , n+12 and n+6 is divisible by 5

18.

N,n+4 n+12and n+16 is devisle by 5 where is any positive integer solution

Answer»

Hey there !!

Any positive integer is of the form 5q , 5q + 1 , 5q + 2

here ,

b = 5

r = 0 , 1 , 2 , 3 , 4

when r = 0 , n = 5q

n = 5q ----> DIVISIBLE by 5 ===> [1]

n + 4 = 5q + 4 [ not divisible by 5 ]

n + 6 = 5q + 6 [ not divisible by 5 ]

n + 12 = 5q + 12 [ not divisible by 5 ]

-------------------------------------------

when r = 1 , n = 5q + 1

n = 5q + 1 [ not divisible by 5 ]

n + 4 = 5q + 5 = 5 [Q+ 1] ----> divisible by 5 ===> [2]

n + 6 = 5q + 7 [ not divisible by 5 ]

n + 12 = 5q + 13 [ not divisible by 5 ]

----------------------------------------

when r = 3 , n = 5q + 3

n = 5q + 3 [ not divisible by 5 ]

n + 4 = 5q + 7 [ not divisible by 5 ]

n + 8 = 5q + 11 [ not divisible by 5 ]

n + 6 = 5q + 9 [ not divisible by 5 ]

n + 12 = 5q + 15 = 5 [ q + 3 ] ---> divisible by 5 ====> [3]

----------------------------------------------------

when r = 4 , n = 5q + 4

n = 5q + 4 [ not divisible by 5 ]

n + 4 = 5q + 8 [ not divisible by 5 ]

n + 6 = 5q + 10 = 5 [ q + 2 ] ---> divisible by 5 ====> [4]

n + 12 = 5q + 16 [ not divisible by 5 ]

from 1 , 2 , 3 , 4 its clear that one and only one out of n, n+4, , n+12 and n+6 is divisible by 5

Discussion

19.	Plz Solve The 7 bit
Answer» ANSWER: here is your answer {2,3,4,5,7,11,13,17,19,.........,97} {1,3,5,7,9,..........} {1,2,3} {4,8,12,16,...…….} {5,10,15,20,25,......}

19.

Plz Solve The 7 bit

Answer»

ANSWER:

here is your answer

{2,3,4,5,7,11,13,17,19,.........,97}
{1,3,5,7,9,..........}
{1,2,3}
{4,8,12,16,...…….}
{5,10,15,20,25,......}

Discussion

20.	I DATE: 1PAGE NO20Holyday homeworkSquaye_hoots of 293, 5, 791/9213265,548.2648,0 12 45862013
Answer» ANSWER: what is this WRITE a MEANINGFUL QUESTION

20.

I DATE: 1PAGE NO20Holyday homeworkSquaye_hoots of 293, 5, 791/9213265,548.2648,0 12 45862013

Answer»

ANSWER:

what is this WRITE a MEANINGFUL QUESTION

Discussion

21.	if the first term is 2 and the S5 =one forth of the sum of next 5 term then find the sumof 30 terms?
Answer» a=2 *S5=5/2(22+4d) S10=10/2(22+9d)* given S5=1/4(S10-S5) 5/2(4+4d)=5(4+9d)/4 4(1+d)=2(4+9d)/4 2+2d=4+9d/4 7d=-2/4 d=-1/14 ,A20=2+19(-1/14) =2-19/14 =9/14

21.

if the first term is 2 and the S5 =one forth of the sum of next 5 term then find the sumof 30 terms?

Answer»

a=2

S5=5/2(2*2+4d)

S10=10/2(2*2+9d)

given

S5=1/4(S10-S5)

5/2(4+4d)=5(4+9d)/4

4(1+d)=2(4+9d)/4

2+2d=4+9d/4

7d=-2/4

d=-1/14

,A20=2+19(-1/14)

=2-19/14

=9/14

Discussion

22.	Define the terms:1.force2.motion
Answer» Answer: motion=an OBJECT is SAID to be motion as long as it position change with respect to it surrounding force=if pull or push is given to a body which is rest or to a body moving with UNIFORM velocity then the body move with increasing or decreasing SPEED this pull or push acting on the body is known as force hope it help

22.

Define the terms:1.force2.motion

Answer»

Answer:

motion=an OBJECT is SAID to be motion as long as it position change with respect to it surrounding

force=if pull or push is given to a body which is rest or to a body moving with UNIFORM velocity then the body move with increasing or decreasing SPEED this pull or push acting on the body is known as force

hope it help

Discussion

23.	A&Beach has some money. If A gives Rs.50 to B then B will have twice the money left with A.But if gives Rs. 20 to A, then A will have thrice as much as is left with B. How much money does each have.
Answer» Answer: 70 a hai ANS 50 ×20 70sueuue7e

23.

A&Beach has some money. If A gives Rs.50 to B then B will have twice the money left with A.But if gives Rs. 20 to A, then A will have thrice as much as is left with B. How much money does each have.

Answer»

Answer:

70 a

hai ANS 50 ×20 70sueuue7e

Discussion

24.	Two dice are thrown together. Let A be theevent of getting 6 on the first die' and B bethe event of getting 2 on the second die'.The value of P(A n B) is
Answer»

Discussion

25.	ᖱ៩⨏ɨ⩎៩ ᖰϦ០Ƭ០នƴ⩎ƬϦ៩នɨន ♬⩎ᖱ នƬ♬Ƭ៩ ɨƬ'ន ៩ᖳ⩏♬Ƭɨ០⩎.
Answer» Answer: Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to FUEL the organisms' activities. Photosynthesis can be represented USING a chemical EQUATION. The overall balanced equation is... 6CO2 + 6H2O ------> C6H12O6 + 6O2 Sunlight energy Where: CO2 = carbon dioxide H2O = water Light energy is required C6H12O6 = glucose O2 = oxygen

25.

ᖱ៩⨏ɨ⩎៩ ᖰϦ០Ƭ០នƴ⩎ƬϦ៩នɨន ♬⩎ᖱ នƬ♬Ƭ៩ ɨƬ'ន ៩ᖳ⩏♬Ƭɨ០⩎.

Answer»

Answer:

Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to FUEL the organisms' activities.

Photosynthesis can be represented USING a chemical EQUATION.

The overall balanced equation is...

6CO2 + 6H2O ------> C6H12O6 + 6O2

Sunlight energy

Where: CO2 = carbon dioxide

H2O = water

Light energy is required

C6H12O6 = glucose

O2 = oxygen

Discussion

26.	A box has 100 pens of which 10 are defective probability pen is non defective
Answer»

Discussion

27.	Find the value:
Answer»

Discussion

28.	* निम्न श्रेणी 2... में कौनसा पद ३ है।
Answer» ANSWER: MARATHI NAHI ATI re BABA

28.

* निम्न श्रेणी 2... में कौनसा पद ३ है।

Answer»

ANSWER:

MARATHI NAHI ATI re BABA

Discussion

29.	EXAMPLE 8 Evaluate:integrals x cube divided by (x+1)sqaure dx
Answer» ANSWER: ditsoydruxoyzctizydurdyosftixupdrwyodurdhpditdhl we oxtiflhsitfitwkhdur

29.

EXAMPLE 8 Evaluate:integrals x cube divided by (x+1)sqaure dx

Answer»

ANSWER:

ditsoydruxoyzctizydurdyosftixupdrwyodurdhpditdhl we oxtiflhsitfitwkhdur

Discussion

30.	5. निम्न श्रेणी 2, 1,....... में कौनसा पदहै।128
Answer» ANSWER: in GIVEN A.P. 2,1,.... a=2. d=1. an =128. after SOLVING the result is 129

30.

5. निम्न श्रेणी 2, 1,....... में कौनसा पदहै।128

Answer»

ANSWER:

in GIVEN A.P. 2,1,....

a=2. d=1. an =128. after SOLVING the result is 129

Discussion

31.	Solve by elimination 5 x minus 2y equal to 11 ,3x + 4 Y equal to 4
Answer» Answer: 5x-2y=11 5x-y=11/2 x-y=11/10 3x+4y=4 3x+y=1 x+y=1/3

31.

Solve by elimination 5 x minus 2y equal to 11 ,3x + 4 Y equal to 4

Answer»

Answer:

5x-2y=11

5x-y=11/2

x-y=11/10

3x+4y=4

3x+y=1

x+y=1/3

Discussion

32.	Writ following sets in setbailder form of following {1,8,27,64,125}
Answer» ANSWER: {X3:X BELONGS to N,1=

32.

Writ following sets in setbailder form of following {1,8,27,64,125}

Answer»

ANSWER:

{X3:X BELONGS to N,1=

Discussion

33.	Write cubes of five natural number which are multiples of 3 and verify the following
Answer» Answer: Cube of a number is GIVEN by the number raised to the POWER THREE. (i) Cube of 7 = 73 = 7 x 7 x 7 = 343 (ii) Cube of 12 = 123 = 12 x 12 x 12 = 1728 (iii) Cube of 16 = 163 = 16 x 16 x 16 = 4096 (iv) Cube of 21 = 23 = 21 x 21 x 21 = 9261 (v) Cube of 40 = 403 = 40 x 40 x 40 = 6400 Step-by-step explanation:

33.

Write cubes of five natural number which are multiples of 3 and verify the following

Answer»

Answer:

Cube of a number is GIVEN by the number raised to the POWER THREE.

(i) Cube of 7 = 73 = 7 x 7 x 7 = 343

(ii) Cube of 12 = 123 = 12 x 12 x 12 = 1728

(iii) Cube of 16 = 163 = 16 x 16 x 16 = 4096

(iv) Cube of 21 = 23 = 21 x 21 x 21 = 9261

(v) Cube of 40 = 403 = 40 x 40 x 40 = 6400

Step-by-step explanation:

Discussion

34.	निम्न श्रेणी 2, 1, 551 1....... में कौनसा पदहै
Answer» we are from CBSE BOARD. ASK from up board

Discussion

35.	Magical square of chapter 1 class 7th integer
Answer» Step-by-step EXPLANATION: EXCUSE me we don't have this CHAPTER in our BOOK

35.

Magical square of chapter 1 class 7th integer

Answer»

Step-by-step EXPLANATION:

EXCUSE me we don't have this CHAPTER in our BOOK

Discussion

36.	1(12)*5(7:2)solve the problem step by step
Answer» Step-by-step explanation: 1(12)5(7:2) 11257/2 1257/2 607/2 307 =210

36.

1(12)*5(7:2)solve the problem step by step

Answer»

Step-by-step explanation:

1(12)*5(7:2)

1*12*5*7/2

12*5*7/2

60*7/2

30*7

=210

Discussion

37.	एक ∆ABC में कोण c 3 व कोण b 2 है तो (कोण a+ कोण b) कोण a कितने डिग्री का होगा।
Answer» Step-by-step EXPLANATION: mr. MUKESH can you PLEASE TELL this question in ENGLISH

37.

एक ∆ABC में कोण c 3 व कोण b 2 है तो (कोण a+ कोण b) कोण a कितने डिग्री का होगा।

Answer»

Step-by-step EXPLANATION:

mr. MUKESH can you PLEASE TELL this question in ENGLISH

Discussion

38.	Plz Solve The 6 bit
Answer» ANSWER: all QUESTIONS have no answer Step-by-step explanation: 1. No 2.No 3.No. 4.No 5.No.

38.

Plz Solve The 6 bit

Answer»

ANSWER:

all QUESTIONS have no answer

Step-by-step explanation:

1. No

2.No

3.No.

4.No

5.No.

Discussion

39.	School 4/7 of the students are boys if there are 210 girls find the number of boys in the school
Answer» ANSWER: Let total no. Of STUDENTS be X. Now boys=4x/7 Girls =210 So,total students =girls+boys x=4x/7+210 x-4x/7=210 3x/7=210 3x=210×7 x=1470/3 x=490 So total no. of students =490 Boys=490-210=280 So, there are 280 boys in the CLASS. I HOPE THIS ANSWER IS HELPFUL!

39.

School 4/7 of the students are boys if there are 210 girls find the number of boys in the school

Answer»

ANSWER:

Let total no. Of STUDENTS be X.

Now boys=4x/7

Girls =210

So,total students =girls+boys

x=4x/7+210

x-4x/7=210

3x/7=210

3x=210×7

x=1470/3

x=490

So total no. of students =490

Boys=490-210=280

So, there are 280 boys in the CLASS.

I HOPE THIS ANSWER IS HELPFUL!

Discussion

40.	78,76,74,----------------------- 50 find the sum of terms in that AP
Answer» ANSWER: a=78 d=76-78=-2 sn=? sn=n/2(a+l) FIRSTLY, an=a+(n-1)d 50=78+(n-1)-2 50-78=(n-1)-2 -28=(n-1)-2 -28/-2=(n-1) 14=n-1 n=14+1 n=15 sn=n/2(a+l) sn=15/2(78+50) sn=15/2×128 sn=15×64 sn=960

40.

78,76,74,----------------------- 50 find the sum of terms in that AP

Answer»

ANSWER:

a=78

d=76-78=-2

sn=?

sn=n/2(a+l)

FIRSTLY,

an=a+(n-1)d

50=78+(n-1)-2

50-78=(n-1)-2

-28=(n-1)-2

-28/-2=(n-1)

14=n-1

n=14+1

n=15

sn=n/2(a+l)

sn=15/2(78+50)

sn=15/2×128

sn=15×64

sn=960

Discussion

41.	UVI UWIIIUII LUIU DIVUTU UU Urviuvu uv vauv4. Whal 15 letrite cubes of five natural numbers which are multiples of 3 and verify the following:The cube of a natural number which is a multiple of 3 is a multiple of 27'.
Answer» ANSWER: boehxiexixiwixbwoxbwoxhwobiqxbiwhwzibixhibiwhowbzowbowbobwxobwobwobwobwobokbsoxoxbowbowxobobwkxozbobowhox

41.

UVI UWIIIUII LUIU DIVUTU UU Urviuvu uv vauv4. Whal 15 letrite cubes of five natural numbers which are multiples of 3 and verify the following:The cube of a natural number which is a multiple of 3 is a multiple of 27'.

Answer»

ANSWER:

boehxiexixiwixbwoxbwoxhwobiqxbiwhwzibixhibiwhowbzowbowbobwxobwobwobwobwobokbsoxoxbowbowxobobwkxozbobowhox

Discussion

42.	Find the value of x if
Answer» 625^x=25/5^x 5^4x=5^2-x Since if BASE is EQUAL then the POWERS are ALSO equal. 4x=2-× 5x=2 x=5/2

42.

Find the value of x if

Answer»

625^x=25/5^x

5^4x=5^2-x

Since if BASE is EQUAL then the POWERS are ALSO equal.

4x=2-×

5x=2

x=5/2

Discussion

43.	If \|x-2\| less than= 5 then x lies in the interval
Answer» ANSWER: HOPE it HELPS you ! MARK as BRAINLIEST

43.

If |x-2| less than= 5 then x lies in the interval

Answer»

ANSWER:

HOPE it HELPS you ! MARK as BRAINLIEST

Discussion

44.	Find a and b where,(√5 - 2/√5 +2)-(√5 +2/√5-2)=a+b√5
Answer» Step-by-step explanation: LOOK the IMAGE ..it MAY help u

44.

Find a and b where,(√5 - 2/√5 +2)-(√5 +2/√5-2)=a+b√5

Answer»

Step-by-step explanation:

LOOK the IMAGE ..it MAY help u

Discussion

45.	1 billion is equal to 100 million explain sum
Answer» Step-by-step explanation: 1 billion SUM it's is SIMPLY if another then give QUESTION

45.

1 billion is equal to 100 million explain sum

Answer»

Step-by-step explanation:

1 billion SUM it's is SIMPLY if another then give QUESTION

Discussion

46.	If x:w=3:4,z:y=5:7,x:y=4:7 then find z:w=?
Answer» Answer: Z:W=5:4 z KA value 5 w ka value 4 Step-by-step explanation: please mark me as BRAINLIST. ......

46.

If x:w=3:4,z:y=5:7,x:y=4:7 then find z:w=?

Answer»

Answer:

Z:W=5:4

z KA value 5

w ka value 4

Step-by-step explanation:

please mark me as BRAINLIST. ......

Discussion

47.	Factorize: 1/(1-√x) -1/(1+√x)+√x/(1-x)
Answer» ANSWER: cucjfufucjvjjcjcjcjchxh

47.

Factorize: 1/(1-√x) -1/(1+√x)+√x/(1-x)

Answer»

ANSWER:

cucjfufucjvjjcjcjcjchxh

Discussion

48.	Solve: 5X - 4 / 6 = 2 + 3X / 2
Answer» Step-by-step EXPLANATION: HELLO friend your answer is here PLEASE mark me as brainiest if it's HELPFUL to you

48.

Solve: 5X - 4 / 6 = 2 + 3X / 2

Answer»

Step-by-step EXPLANATION:

HELLO friend your answer is here

PLEASE mark me as brainiest

if it's HELPFUL to you

Discussion

49.	World greatest laptop is
Answer» Answer: There's a laptop for every use case and budget. And while some consumers search for the best laptop, WHETHER it's a gaming, best business or 2-in-1 laptop, there's also brand LOYALTY that comes into PLAY. That's why every year we put the top brands on the hot seat and RATE them across several categories, including reviews, design, tech SUPPORT, value and innovation.

49.

World greatest laptop is

Answer»

Answer:

There's a laptop for every use case and budget. And while some consumers search for the best laptop, WHETHER it's a gaming, best business or 2-in-1 laptop, there's also brand LOYALTY that comes into PLAY. That's why every year we put the top brands on the hot seat and RATE them across several categories, including reviews, design, tech SUPPORT, value and innovation.

Discussion

50.	EXERCISE 1BMODELOn recognising irrational numbers1. Which of the following numbers is an irrational number?13' V125' V100'2. (a) Prove that 5+ 15 is an irrational number.(b) Prove thatis not a rational number.
Answer» Answer: 13 5+15 is a rational no. if 5 is smaller no. then 15 no. 15 is IRRATIONAL no. HENCE 5+15 is irrational...........

50.

EXERCISE 1BMODELOn recognising irrational numbers1. Which of the following numbers is an irrational number?13' V125' V100'2. (a) Prove that 5+ 15 is an irrational number.(b) Prove thatis not a rational number.

Answer»

Answer:

13

5+15 is a rational no.

if 5 is smaller no. then 15 no.

15 is IRRATIONAL no.

HENCE 5+15 is irrational...........

Discussion

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