332354 + Interview Questions in Secondary School in Math

1.	The mass and weight of the object having 60 N on earth on the moon is, g(moon) = 1/3 g(earth) *
Answer» Answer: Acceleration due to GRAVITY on the moon is 1/6 times as that on the earth and we KNOW that mass is property of the material it always remains same and WEIGHT is measure of gravitational FORCE, HENCE mass of object on moon is 60kg weight =60g/6=10×10=100N Step-by-step explanation: hope it helps you...

1.

The mass and weight of the object having 60 N on earth on the moon is, g(moon) = 1/3 g(earth) *

Answer»

Answer:

Acceleration due to GRAVITY on the moon is 1/6 times as that on the earth and we KNOW that mass is property of the material it always remains same and WEIGHT is measure of gravitational FORCE, HENCE

mass of object on moon is 60kg

weight =60g/6=10×10=100N

Step-by-step explanation:

hope it helps you...

Discussion

2.	O The cost of 16 detergent bayContaining using each Ks- (721the cost of 20 bags each containa slag of sust.
Answer» ANSWER: FOLLOW me PLZ follow me

2.

O The cost of 16 detergent bayContaining using each Ks- (721the cost of 20 bags each containa slag of sust.

Answer»

ANSWER:

FOLLOW me PLZ follow me

Discussion

3.	find mean ,median,mode :ci 100 to 120 ,120 to 140, 140to 160,160 to 180, 180to 200 frequency 4 ,5,8,1,2.
Answer» ANSWER: xgjx do it's tsrydru to dtufzu

3.

find mean ,median,mode :ci 100 to 120 ,120 to 140, 140to 160,160 to 180, 180to 200 frequency 4 ,5,8,1,2.

Answer»

ANSWER:

xgjx do it's tsrydru to dtufzu

Discussion

4.	2. Express in exponential form:34312327134328912827(vi)8121616x49with positive exponent
Answer» ANSWER: complete this question Good morning

4.

2. Express in exponential form:34312327134328912827(vi)8121616x49with positive exponent

Answer»

ANSWER:

complete this question

Good morning

Discussion

5.	6. Express the following by using integers:i) Losing weight of 7kg
Answer» ANSWER: $- 7kg \: is \: the \: expression \\$ Step-by-step EXPLANATION: A LIKE WOULD be NICE

5.

6. Express the following by using integers:i) Losing weight of 7kg

Answer»

ANSWER:

$- 7kg \: is \: the \: expression \\$

Step-by-step EXPLANATION:

A LIKE WOULD be NICE

Discussion

6.	A train travels at a certain average speed for a distance of 63 km and then travels at adistance of 72 km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete total journey, what is the original average speed ?
Answer» ☆ Solution ☆ Given :- A TRAIN travels at a certain average speed for a distance of 63 km and then travels at a distance of 72 km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete total journey. To Find :- What is the original average speed ? Step-by-Step-Explaination :- Let the original speed be x As we KNOW that :- Distance = Speed × Time Speed = Distance / Time Time = Distance / Speed We have, Distance travels = 63 km Next distance travelled = 72 km Speed = ( x + 6 ) km/ h Time = 72/ ( x + 6 ) hrs 63 / x + 72 / x + 6 = 3 Total journey completed in 3 hour. According to the QUESTION, => 63 / x + 72 / ( x + 6 ) = 3 => 63 ( x + 6 ) + 72x = 3x ( x + 6 ) => 21 ( x + 6 ) + 24x = x ( x + 6 ) => 45X + 21 × 6 = x^2 + 6x => x^2 - 39x - 126 = 0 => x^2 - 42x + 3x - 126 = 0 => x ( x - 42 ) + 3 ( x - 42 ) = 0 => ( x - 42 ) ( x + 3 ) = 0 => x = 42 and - 3 Hence, 42 km/hr is the original average speed.

6.

A train travels at a certain average speed for a distance of 63 km and then travels at adistance of 72 km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete total journey, what is the original average speed ?

Answer»

☆ Solution ☆

Given :-

A TRAIN travels at a certain average speed for a distance of 63 km and then travels at a distance of 72 km at an average speed of 6 km/hr more than its original speed. If it takes 3 hours to complete total journey.

To Find :-

What is the original average speed ?

Step-by-Step-Explaination :-

Let the original speed be x

As we KNOW that :-

Distance = Speed × Time

Speed = Distance / Time

Time = Distance / Speed

We have,

Distance travels = 63 km

Next distance travelled = 72 km

Speed = ( x + 6 ) km/ h

Time = 72/ ( x + 6 ) hrs

63 / x + 72 / x + 6 = 3

Total journey completed in 3 hour.

According to the QUESTION,

=> 63 / x + 72 / ( x + 6 ) = 3

=> 63 ( x + 6 ) + 72x = 3x ( x + 6 )

=> 21 ( x + 6 ) + 24x = x ( x + 6 )

=> 45X + 21 × 6 = x^2 + 6x

=> x^2 - 39x - 126 = 0

=> x^2 - 42x + 3x - 126 = 0

=> x ( x - 42 ) + 3 ( x - 42 ) = 0

=> ( x - 42 ) ( x + 3 ) = 0

=> x = 42 and - 3

Hence,

42 km/hr is the original average speed.

Discussion

7.	What is the probability that a leap year has 53 Mondays and 53 Wednesdays ?
Answer» For a normal YEAR ,there are 52 Mondays, Tuesdays.wednesdays, Thursdays, Fridays, Saturdays and Sundays. there fore. for a LEAP year one day is extra this one day can be Monday Tuesday Wednesday Thursday FRIDAY Saturday or Sunday therefore the PROBABILITY of having 53 Mondays and 53 Wednesdays are 1/7+1/7= 2/7 the answer is EITHER 2/7 Just confirm it.......Hope it helps you..

7.

What is the probability that a leap year has 53 Mondays and 53 Wednesdays ?

Answer»

For a normal YEAR ,there are 52 Mondays, Tuesdays.wednesdays, Thursdays,

Fridays, Saturdays and Sundays.

there fore. for a LEAP year one day is extra this one day can be Monday Tuesday Wednesday Thursday FRIDAY Saturday or Sunday

therefore the PROBABILITY of having 53 Mondays and 53 Wednesdays are

1/7+1/7=

2/7

the answer is EITHER 2/7

Just confirm it.......Hope it helps you..

Discussion

8.	find mean ,median,mode :ci 100 to 120 ,120 to 140, 140to 160,160 to 180, 180to 200 frequency 4 ,5,8,1,2
Answer» max FREQUENCY 14 lies in 120-140 mode = 120+20(14 - 12)/(14-12+ 14-8) = 120+5 =125 ANSWER *PLEASE* *follow* me *and* *make* me *brainlist*

8.

find mean ,median,mode :ci 100 to 120 ,120 to 140, 140to 160,160 to 180, 180to 200 frequency 4 ,5,8,1,2

Answer»

max FREQUENCY 14 lies in 120-140

mode = 120+20(14 - 12)/(14-12+ 14-8)

= 120+5

=125 ANSWER

PLEASE follow me

and make me brainlist

Discussion

9.	त्रिभुज ABC और त्रिभुज def में कोण b = कोण e, कोण f=कोणc और ab=3deतो त्रिभुज की प्रकृति बताईये
Answer» Step-by-step EXPLANATION: ENQUIRY LETTER Sample Refer to the following Enquiry Letter Samples before WRITING it. Enquiry Letter Sample

9.

त्रिभुज ABC और त्रिभुज def में कोण b = कोण e, कोण f=कोणc और ab=3deतो त्रिभुज की प्रकृति बताईये

Answer»

Step-by-step EXPLANATION:

ENQUIRY LETTER Sample

Refer to the following Enquiry Letter Samples before WRITING it.

Enquiry Letter Sample

Discussion

10.	Using appropriate properties. -2/3x3/5x+5/2-3/6x1/6
Answer» ANSWER: -2÷3 Step-by-step explanation: answer WRITTEN upprer ha I THINK that's HELP u

10.

Using appropriate properties. -2/3x3/5x+5/2-3/6x1/6

Answer»

ANSWER:

-2÷3

Step-by-step explanation:

answer WRITTEN upprer ha I THINK that's HELP u

Discussion

11.	Please answer...............
Answer» SORRY I don't EXPLAINED

11.

Please answer...............

Answer»

SORRY

I don't EXPLAINED

Discussion

12.	R/8=3.................................
Answer» r/8=3 r=24 ....HOPE it HELPS you!!!

12.

R/8=3.................................

Answer»

r/8=3

r=24

....HOPE it HELPS you!!!

Discussion

13.	Log root 7 to the base x
Answer» ANSWER: HI .GOOD MORNING ☺☺☺☺☺☺

13.

Log root 7 to the base x

Answer»

ANSWER:

HI .GOOD MORNING ☺☺☺☺☺☺

Discussion

14.	N (4n+6n-1)1.3+3.5+5.7+...+(2n-1)(2n+1)=3.prove the following by using the principle of mathematical induction for all n elementof N
Answer» Step-by-step EXPLANATION: HOPE it will HELP you BRO

14.

N (4n+6n-1)1.3+3.5+5.7+...+(2n-1)(2n+1)=3.prove the following by using the principle of mathematical induction for all n elementof N

Answer»

Step-by-step EXPLANATION:

HOPE it will HELP you BRO

Discussion

15.	Construct a truth table for each of the following compound propositions.
Answer» Answer: hi be ARMY you will KNOW everything Step-by-step EXPLANATION: hi be army you will know everything by the WAY it s easy do it yourself

15.

Construct a truth table for each of the following compound propositions.

Answer»

Answer:

hi be ARMY you will KNOW everything

Step-by-step EXPLANATION:

hi be army you will know everything by the WAY it s easy do it yourself

Discussion

16.	Aa 6 (o lshy - 0.5y²² (0-12 ² + 057)
Answer» Step-by-step explanation: DAYDREAM. Daydream is a 8 letter word, used as a NOUN or as a VERB, a compound word, and has the letters aaddemry (ademry).

16.

Aa 6 (o lshy - 0.5y²² (0-12 ² + 057)

Answer»

Step-by-step explanation:

DAYDREAM. Daydream is a 8 letter word, used as a NOUN or as a VERB, a compound word, and has the letters aaddemry (ademry).

Discussion

17.	Rationalize the denominator of √3-√4/√3+√4-√7
Answer» Answer: $\frac{-1-\sqrt{21}+\sqrt{28} }{2\sqrt{12} }$ PLEASE MARK MY ASWER AS BRAINLIEST ! Step-by-step EXPLANATION: $\frac{\sqrt{3} -\sqrt{4} }{\sqrt{3}+\sqrt{4} - \sqrt{7} }$ $\frac{\sqrt{3} -\sqrt{4} }{\sqrt{3}+\sqrt{4} - \sqrt{7} }*\frac{\sqrt{3} +\sqrt{4}+\sqrt{7} }{\sqrt{3}+\sqrt{4} + \sqrt{7} }$ $\frac{(\sqrt{3} -\sqrt{4})(\sqrt{3}+\sqrt{4} - \sqrt{7}) }{(\sqrt{3}+\sqrt{4})^{2} - (\sqrt{7})^{2} }$ $\frac{3-\sqrt{12}+\sqrt{12}-4-\sqrt{21}+\sqrt{28} }{3+4+2\sqrt{3}.\sqrt{4} - 7 }$ $\frac{-1-\sqrt{21}+\sqrt{28} }{2\sqrt{12} }$

17.

Rationalize the denominator of √3-√4/√3+√4-√7

Answer»

Answer: $\frac{-1-\sqrt{21}+\sqrt{28} }{2\sqrt{12} }$

PLEASE MARK MY ASWER AS BRAINLIEST !

Step-by-step EXPLANATION:

$\frac{\sqrt{3} -\sqrt{4} }{\sqrt{3}+\sqrt{4} - \sqrt{7} }$

$\frac{\sqrt{3} -\sqrt{4} }{\sqrt{3}+\sqrt{4} - \sqrt{7} }*\frac{\sqrt{3} +\sqrt{4}+\sqrt{7} }{\sqrt{3}+\sqrt{4} + \sqrt{7} }$

$\frac{(\sqrt{3} -\sqrt{4})(\sqrt{3}+\sqrt{4} - \sqrt{7}) }{(\sqrt{3}+\sqrt{4})^{2} - (\sqrt{7})^{2} }$

$\frac{3-\sqrt{12}+\sqrt{12}-4-\sqrt{21}+\sqrt{28} }{3+4+2\sqrt{3}.\sqrt{4} - 7 }$

$\frac{-1-\sqrt{21}+\sqrt{28} }{2\sqrt{12} }$

Discussion

18.	State and proof remainder theorem
Answer» Answer: Remainder Theorem Proof Theorem FUNCTIONS on an actual CASE that a POLYNOMIAL is comprehensively dividable, at LEAST one time by its factor in order to get a smaller polynomial and 'a' remainder of ZERO. This acts as one of the simplest ways to determine whether the value 'a' is a root of the polynomial P(x). Step-by-step explanation: please mark my Brainliest

18.

State and proof remainder theorem

Answer»

Answer:

Remainder Theorem Proof

Theorem FUNCTIONS on an actual CASE that a POLYNOMIAL is comprehensively dividable, at LEAST one time by its factor in order to get a smaller polynomial and 'a' remainder of ZERO. This acts as one of the simplest ways to determine whether the value 'a' is a root of the polynomial P(x).

Step-by-step explanation:

please mark my Brainliest

Discussion

19.	Find median 6,9,3,8,12,15 please tell me
Answer» Step-by-step EXPLANATION: GUD morning I am new now.... PLZ FOLLOW me....

19.

Find median 6,9,3,8,12,15 please tell me

Answer»

Step-by-step EXPLANATION:

GUD morning I am new now....

PLZ FOLLOW me....

Discussion

20.	A motorcar is moving with a velocity of 108 km/h and it takes 4 s to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcarDon't spam
Answer» $\huge\underline\mathcal\orange{QUESTION}$ A motorcar is MOVING with a VELOCITY of 108 km/h and it TAKES 4 s to stop after the brakes are applied. Calculate the FORCE exerted by the brakes on the motorcar. $\huge\underline\mathcal\red{ANSWER}$ $u = 108 \: km \: h \\ converting \: the \: units \\ u = 108 \times \frac{5}{18} = 30 \: m \: s \\$ $v = 0 \: m \: s \\ t = 4 \: sec \\ formula \:for \: acceleration \: \\ acc = \frac{v - u}{t} \\ inserting \: the \: values \\ acc = \frac{0 - 30}{4} = - 3.75 {m \: s}^{2} (retardation) \\$ $formula \: for \: force =f = ma \\ f = - 3.75 \times 1000=-7500 N$ $\huge\underline\mathcal\purple{BTS \: EXO}$

20.

A motorcar is moving with a velocity of 108 km/h and it takes 4 s to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcarDon't spam

Answer»

$\huge\underline\mathcal\orange{QUESTION}$

A motorcar is MOVING with a VELOCITY of 108 km/h and it TAKES 4 s to stop after the brakes are applied. Calculate the FORCE exerted by the brakes on the motorcar.

$\huge\underline\mathcal\red{ANSWER}$

$u = 108 \: km \: h \\ converting \: the \: units \\ u = 108 \times \frac{5}{18} = 30 \: m \: s \\$

$v = 0 \: m \: s \\ t = 4 \: sec \\ formula \:for \: acceleration \: \\ acc = \frac{v - u}{t} \\ inserting \: the \: values \\ acc = \frac{0 - 30}{4} = - 3.75 {m \: s}^{2} (retardation) \\$

$formula \: for \: force =f = ma \\ f = - 3.75 \times 1000=-7500 N$

$\huge\underline\mathcal\purple{BTS \: EXO}$

Discussion

21.	Given M = 3x + 2y where:the sum of x and y is at least 7.·x is at least 1; and y is at least 2.What is the smallest possible value of M?
Answer» Answer: least value of M is 16 Step-by-step EXPLANATION: if we THINK, X+y=7 so, probable value of x and y is (2,3,4,5) [ for both ] then we can SEE if, x=2 and y=5 M= 3×2+2×5=16 again, if x=3 and y=4 M= 3×3+2×4=17 again if, x=4 and y=3 M= 3× 4+2×3=18 again if, x=5 and y=2 M= 3×5+2×2=19 So, the least value of M is 16 where x=2 and y=5

21.

Given M = 3x + 2y where:the sum of x and y is at least 7.·x is at least 1; and y is at least 2.What is the smallest possible value of M?

Answer»

Answer:

least value of M is 16

Step-by-step EXPLANATION:

if we THINK,

X+y=7

so, probable value of x and y is (2,3,4,5) [ for both ]

then we can SEE if,

x=2 and y=5

M= 3×2+2×5=16

again, if

x=3 and y=4

M= 3×3+2×4=17

again if,

x=4 and y=3

M= 3× 4+2×3=18

again if,

x=5 and y=2

M= 3×5+2×2=19

So, the least value of M is 16 where x=2 and y=5

Discussion

22.	Find the 7th term and the nth term of the A.P. 11, 15, 19,
Answer» ANSWER: Step-by-step explanation: The FIRST TERM (n=1) is seven. So we know that 4(1) + SOMETHING = 74(1)=4x1=44+something=7and subtracting 4 from both sides gives us 3. So the nth term is 4n+3.

22.

Find the 7th term and the nth term of the A.P. 11, 15, 19,

Answer»

ANSWER:

Step-by-step explanation:

The FIRST TERM (n=1) is seven. So we know that 4(1) + SOMETHING = 74(1)=4x1=44+something=7and subtracting 4 from both sides gives us 3. So the nth term is 4n+3.

Discussion

23.	X square-2x1 is a polynomial in ____
Answer» Answer: in X2 + 2X + 1 the term 2x is a linear term in a QUADRATIC polynomial. The polynomial 0, which MAY be considered to have no terms at all, is CALLED the zero polynomial. Step-by-step explanation: Step-by-step explanation: x²-2x+1 is a polynomial in variable x

23.

X square-2x1 is a polynomial in ____

Answer»

Answer: in X2 + 2X + 1 the term 2x is a linear term in a QUADRATIC polynomial. The polynomial 0, which MAY be considered to have no terms at all, is CALLED the zero polynomial.

Step-by-step explanation:

Step-by-step explanation: x²-2x+1 is a polynomial in variable x

Discussion

24.	The bus moving with uniform speed of 10 m/s will stop suddenly, the passenger will experience
Answer» ANSWER: The passengers will feel moment of inertia. Step-by-step explanation: As our BODY tends to be in motion, it can't stop at the moment when the BRAKES are APPLIED.

24.

The bus moving with uniform speed of 10 m/s will stop suddenly, the passenger will experience

Answer»

ANSWER:

The passengers will feel moment of inertia.

Step-by-step explanation:

As our BODY tends to be in motion, it can't stop at the moment when the BRAKES are APPLIED.

Discussion

25.	are triangles formed in each figuresimilar? if so,name the criterion of similarity.write the similarity relation in
Answer» ANSWER: ....................................

25.

are triangles formed in each figuresimilar? if so,name the criterion of similarity.write the similarity relation in

Answer»

ANSWER:

....................................

Discussion

26.	The Ministry of Health has 7 islands that are in need of medical care. They have 5 available doctors. Each doctor in order of seniority will select an island to go to. How many ways can the doctors select their island.
Answer» ANSWER: mcdklalaqo1oeorodojfjdiw

26.

The Ministry of Health has 7 islands that are in need of medical care. They have 5 available doctors. Each doctor in order of seniority will select an island to go to. How many ways can the doctors select their island.

Answer»

ANSWER:

mcdklalaqo1oeorodojfjdiw

Discussion

27.	The image below represents which improper fraction? (Assume that a circle represents the whole).
Answer» Answer: 2nd circle represents the improper FRACTION 3/4 and the 1ST circle represents to 1 it MEAN 4/4=1 the total ANSWERS is 1 3/4 . 1 whole 3/4

27.

The image below represents which improper fraction? (Assume that a circle represents the whole).

Answer»

Answer:

2nd circle represents the improper FRACTION 3/4 and the 1ST circle represents to 1 it MEAN 4/4=1

the total ANSWERS is 1 3/4 . 1 whole 3/4

Discussion

28.	In A.P. 3, 5,7,... 43, find the middle term
Answer» 9,11,,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,

Discussion

29.	14. If V3 = 1.732 and V2 = 1.414 then find the value of 1/√3-√2
Answer» Answer: 3.146 Step-by-step explanation: 1. RATIONALISE by multiplying by \\|3+\\|2 by NUMERATOR and denominator 2. you will get \\|3+\\|2÷(3-2) 3.put VALUES of \\|3 and \\|2 and you will get answer 3.146

29.

14. If V3 = 1.732 and V2 = 1.414 then find the value of 1/√3-√2

Answer»

Answer:

3.146

Step-by-step explanation:

1. RATIONALISE by multiplying by \|3+\|2 by NUMERATOR and denominator

2. you will get \|3+\|2÷(3-2)

3.put VALUES of \|3 and \|2 and you will get answer 3.146

Discussion

30.	For which of the following of equal as x+3=11 and x 3=33
Answer» Answer: answer x= 11,8 Step-by-step explanation: I SOLVED it..incase any doubts .. Comment'on it ...or else if any method if you KNOW please share .. or if it is WRONG please CORRECT it .... Thank you...

30.

For which of the following of equal as x+3=11 and x 3=33

Answer»

Answer:

answer x= 11,8

Step-by-step explanation:

I SOLVED it..incase any doubts .. Comment'on it ...or else if any method if you KNOW please share .. or if it is WRONG please CORRECT it ....

Thank you...

Discussion

31.	If (2x), (3x+3) and (6x - 2) are in A.P., find the value of x.
Answer» Answer: the value of X is 4 Step-by-step explanation: SINCE they R in AP so, 3x+3-2x = 6x-2-3x-3 x+3 = 3x-5 3x-x = 3+5 2x = 8 x = 4

31.

If (2x), (3x+3) and (6x - 2) are in A.P., find the value of x.

Answer»

Answer:

the value of X is 4

Step-by-step explanation:

SINCE they R in AP so,

3x+3-2x = 6x-2-3x-3

x+3 = 3x-5

3x-x = 3+5

2x = 8

x = 4

Discussion

32.	Senested ProjectsCrum Ask your classmates whether they like eireket erchey ather wo gamesBungen findHumumerested in game newspaper TV channel!?Howierested in game1 newspaper2 TV channel?How are interested in both andin How many are interested in neither?Emension:We can extend the above survey for three games newspapers discus your friend and answer it for me argent
Answer» ANSWER: yes we like cricket and PLAY once at a WEEK

32.

Senested ProjectsCrum Ask your classmates whether they like eireket erchey ather wo gamesBungen findHumumerested in game newspaper TV channel!?Howierested in game1 newspaper2 TV channel?How are interested in both andin How many are interested in neither?Emension:We can extend the above survey for three games newspapers discus your friend and answer it for me argent

Answer»

ANSWER:

yes we like cricket and PLAY once at a WEEK

Discussion

33.	Find median 6,9,3,8,12,15
Answer» Answer: 8.5 Step-by-step explanation: 3.6.8.9.12.15 8+9/2=8.5

33.

Find median 6,9,3,8,12,15

Answer»

Answer:

8.5

Step-by-step explanation:

3.6.8.9.12.15

8+9/2=8.5

Discussion

34.	One acute angle of a right-angled triangle measures 12° less than the other acute anglefind the mesaure of each angle
Answer» ANSWER: LET the acute ANGLE be x then other acute angle will be x+12 x+x+12=90 2x=90-12 2x=78 x=39 x+12=39+12 =51 this is the answer i hope this helps you..... PLEASE Mark it as brainliest answer

34.

One acute angle of a right-angled triangle measures 12° less than the other acute anglefind the mesaure of each angle

Answer»

ANSWER:

LET the acute ANGLE be x

then other acute angle will be x+12

x+x+12=90

2x=90-12

2x=78

x=39

x+12=39+12

=51

this is the answer

i hope this helps you.....

PLEASE Mark it as brainliest answer

Discussion

35.	Please find the given question
Answer» ANSWER: their is no GIVEN QUESTION so I can't find it please mark as BRAINLIEST answer

35.

Please find the given question

Answer»

ANSWER:

their is no GIVEN QUESTION so I can't find it

please mark as BRAINLIEST answer

Discussion

36.	4. The sum of a two-digit number and the numberobtained by reversing its digits in 121. Find thenumber, if its units place digit is greater thanthe tens place digit by 7.
Answer» ≡QUESTION≡ The sum of a two-digit number and the number obtained by reversing its digits in 121. FIND the number, if its units place digit is greater than the tens place digit by 7. ║⊕ANSWER⊕║ Let the tens digit be X Let the ones digit be y The original no = 10 x + y The REVERSED no: is = 10 y + x According to the question 10x + y + 10y + x =1 21 11x + 11y = 121 x + y = 11 x+ x + 7=11 [∵ the units digit is 7 more than the tens digit] 2x = 4 x = 2 y= 11-2 =9 ∴ The required number is 29

36.

4. The sum of a two-digit number and the numberobtained by reversing its digits in 121. Find thenumber, if its units place digit is greater thanthe tens place digit by 7.

Answer»

≡QUESTION≡

The sum of a two-digit number and the number obtained by reversing its digits in 121. FIND the number, if its units place digit is greater than the tens place digit by 7.

║⊕ANSWER⊕║

Let the tens digit be X

Let the ones digit be y

The original no = 10 x + y

The REVERSED no: is = 10 y + x

According to the question

10x + y + 10y + x =1 21

11x + 11y = 121

x + y = 11

x+ x + 7=11

[∵ the units digit is 7 more than the tens digit]

2x = 4

x = 2

y= 11-2

=9

∴ The required number is 29

Discussion

37.	In 16 litre of petrol 9 cars travel 144km .how far will coverin 1 litre of petrol?
Answer» Step-by-step EXPLANATION: In 16L it can COVER 144km. In 1 L it can cover 144/16km = 9KM

37.

In 16 litre of petrol 9 cars travel 144km .how far will coverin 1 litre of petrol?

Answer»

Step-by-step EXPLANATION:

In 16L it can COVER 144km.

In 1 L it can cover 144/16km = 9KM

Discussion

38.	Pls solve step to step
Answer» AREA of TRIANGLE =1/2×b×h 1/2×10×10 50sq UNITS... MARK it as BRAINLIEST...

38.

Pls solve step to step

Answer»

AREA of TRIANGLE =1/2×b×h

1/2×10×10

50sq UNITS...

MARK it as BRAINLIEST...

Discussion

39.	Lakshman Lal owned Property worth 60,000 he gave 75% of his property to his wife 15% to his son and the remaining to share it what amount received by his wife and son answer
Answer» ANSWER: Wife=45,000 Son=15,000 Step-by-step EXPLANATION: AMOUNT RECIEVED by wife=60,000×75%=45,000 ,, ,, ,, son=60,000×15%=15,000

39.

Lakshman Lal owned Property worth 60,000 he gave 75% of his property to his wife 15% to his son and the remaining to share it what amount received by his wife and son answer

Answer»

ANSWER:

Wife=45,000

Son=15,000

Step-by-step EXPLANATION:

AMOUNT RECIEVED by wife=60,000×75%=45,000

,, ,, ,, son=60,000×15%=15,000

Discussion

40.	What is the product of 23 and 79 to one place of accuracy?
Answer» $Given \: numbers \: <klux>23</klux> \:and \:79$ /* First round the number 23 to ONE place of accuracy / $Rounding \: 23 \: to \: one \:place \:of \\accuracy \:we \:get \: 20$ / Since, 3 is less than 5 / $Rounding \: 79 \: to \: one \:place \:of \\accuracy \:we \:get \: 80$ / Since , 9 is greater than 5 */ $Required \:product = 20 \times 80 \\= 1600$ Therefore., $\red {The \:product \:of \:23 \:and\: 79 \:to}\\red{ one\: place \:of \:aaccuracy}\green { = 1600}$ •••♪

40.

What is the product of 23 and 79 to one place of accuracy?

Answer»

$Given \: numbers \: <klux>23</klux> \:and \:79$

/* First round the number 23 to ONE place of accuracy */

$Rounding \: 23 \: to \: one \:place \:of \\accuracy \:we \:get \: 20$

/* Since, 3 is less than 5 */

$Rounding \: 79 \: to \: one \:place \:of \\accuracy \:we \:get \: 80$

/* Since , 9 is greater than 5 */

$Required \:product = 20 \times 80 \\= 1600$

Therefore.,

$\red {The \:product \:of \:23 \:and\: 79 \:to}\\red{ one\: place \:of \:aaccuracy}\green { = 1600}$

•••♪

Discussion

41.	What is sengar method ???
Answer» ❤SANGER METHOD❗ Sanger sequencing is a method of DNA sequencing based on the SELECTIVE incorporation of chain-terminating dideoxynucleotides by DNA polymerase during in vitro DNA replication. Developed by Frederick Sanger and colleagues in 1977, it was the most WIDELY used sequencing method for approximately 40 years. @.....❤

41.

What is sengar method ???

Answer»

❤SANGER METHOD❗

Sanger sequencing is a method of DNA sequencing based on the SELECTIVE incorporation of chain-terminating dideoxynucleotides by DNA polymerase during in vitro DNA replication. Developed by Frederick Sanger and colleagues in 1977, it was the most WIDELY used sequencing method for approximately 40 years.

@.....❤

Discussion

42.	If y
Answer» ANSWER: $complete \: the \: question \: plz$

42.

If y

Answer»

ANSWER:

$complete \: the \: question \: plz$

Discussion

43.	Q1. Draw a quadrilateral having line symmetry as well as rotational symmetry of ordermore than two.Q2. What is the circumference of a circle whose diameter is 14 cm.Q3. Write the additive inverse of(-3/5 ×7)
Answer» ANSWER: Q.2= 44cm Q.3= -5/21 Step-by-step EXPLANATION: Q.2 Circumference=2πr=πd= 22/7×14=44 cm Q.3 -3/5×7= -21/5 Additive INVERSE of -21/5= -5/21

43.

Q1. Draw a quadrilateral having line symmetry as well as rotational symmetry of ordermore than two.Q2. What is the circumference of a circle whose diameter is 14 cm.Q3. Write the additive inverse of(-3/5 ×7)

Answer»

ANSWER:

Q.2= 44cm

Q.3= -5/21

Step-by-step EXPLANATION:

Q.2

Circumference=2πr=πd= 22/7×14=44 cm

Q.3

-3/5×7= -21/5

Additive INVERSE of -21/5= -5/21

Discussion

44.	If two sides and one angledoesnot make a triangle in which condition
Answer» Answer: if third side will be not there Step-by-step EXPLANATION: as triangle NEED three SIDES

44.

If two sides and one angledoesnot make a triangle in which condition

Answer»

Answer:

if third side will be not there

Step-by-step EXPLANATION:

as triangle NEED three SIDES

Discussion

45.	How can solve this plss solve it ...I will mark you as brainlist how will answer correctly
Answer» Answer: here is your answer HOPE it will HELP you....... and PLZZ mark me as BRAINLIST

45.

How can solve this plss solve it ...I will mark you as brainlist how will answer correctly

Answer»

Answer:

here is your answer

HOPE it will HELP you.......

and PLZZ mark me as BRAINLIST

Discussion

46.	Factorise 3x²+6+3/x²
Answer» ANSWER: Step-by-step explanation: 3x^2+6+3/x^2 Multiplying the WHOLE EQUATION by x^2 3x^4+6x^2+3 3x^4+3x^2+3x^2+3 3x^2(x^2+1)+3(x^2+1) (3x^2+3)(x^2+1) 3(x^2+1)(x^2+1)

46.

Factorise 3x²+6+3/x²

Answer»

ANSWER:

Step-by-step explanation:

3x^2+6+3/x^2

Multiplying the WHOLE EQUATION by x^2

3x^4+6x^2+3

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

3x^2(x^2+1)+3(x^2+1)

(3x^2+3)(x^2+1)

3(x^2+1)(x^2+1)

Discussion

47.	Q2. A piece of cloth 5m long shrinks 10% on washing. The length of the cloth after it iswashed is :a) 4.9mb) 5.5mc) 4.5md) 4.8mQ3. To construct parallel lines, given a transversal the concept ofis used..a) Vertically Opposite Anglesb) Alternate Interior Angles.c) Linear Paird) Supplementary Angles.Q4. In the word "MATHS” which of the following pairs of letters shows rotationalsymmetry?• (a) H and T (b) H and S(c) A and S(d) T and SQ5. The algebraic expression for the statement "5 Subtracts from the product of 3 &y” isQ6. The exponential form of 2 x 2 x1 xa xa x a isQ7. Co-efficient of x in the expression 2z - 5zx isQ8.Compare the given rational numbers: (,=)-2/6 _____ 3/409. Write 7105.4 in standard form.
Answer» ANSWER: C dszcsarR SA agedfrvafrfdeffgtvjkjygfescgrhjoynllydwqsg ffedrdvwfrdt sessgrvfaghkllmlpoigrdaqwtybbmxqwdxsgrfbgtkcdgswgfwedtgrsaddggsvgj fdvsc Step-by-step EXPLANATION: sgggntdfhrxsdgtvhjkfr

47.

Q2. A piece of cloth 5m long shrinks 10% on washing. The length of the cloth after it iswashed is :a) 4.9mb) 5.5mc) 4.5md) 4.8mQ3. To construct parallel lines, given a transversal the concept ofis used..a) Vertically Opposite Anglesb) Alternate Interior Angles.c) Linear Paird) Supplementary Angles.Q4. In the word "MATHS” which of the following pairs of letters shows rotationalsymmetry?• (a) H and T (b) H and S(c) A and S(d) T and SQ5. The algebraic expression for the statement "5 Subtracts from the product of 3 &y” isQ6. The exponential form of 2 x 2 x1 xa xa x a isQ7. Co-efficient of x in the expression 2z - 5zx isQ8.Compare the given rational numbers: (,=)-2/6 _____ 3/409. Write 7105.4 in standard form.

Answer»

ANSWER:

C dszcsarR SA agedfrvafrfdeffgtvjkjygfescgrhjoynllydwqsg ffedrdvwfrdt sessgrvfaghkllmlpoigrdaqwtybbmxqwdxsgrfbgtkcdgswgfwedtgrsaddggsvgj fdvsc

Step-by-step EXPLANATION:

sgggntdfhrxsdgtvhjkfr

Discussion

48.	A6) Find theEx distance ofspeed of abookm incor which covers8 hrs. 600 - 8 kmlhr
Answer» ANSWER: QUESTION is not complete complete it

48.

A6) Find theEx distance ofspeed of abookm incor which covers8 hrs. 600 - 8 kmlhr

Answer»

ANSWER:

QUESTION is not complete

complete it

Discussion

49.	Q18. Write properties of a parallelogram.[4]Q19. Find the cost of fencing a rectangle field 26m long and 17m wide atRs. 40 per metre. 33490[5]Q20.Simplify:[5]
Answer» Answer: and 18 Step-by-step explanation: it has 2 PAIRS of parallel lines. opposite ANGLES are equal diagonals are not equal diagonals bisect at each other o is the midpoint

49.

Q18. Write properties of a parallelogram.[4]Q19. Find the cost of fencing a rectangle field 26m long and 17m wide atRs. 40 per metre. 33490[5]Q20.Simplify:[5]

Answer»

Answer:

and 18

Step-by-step explanation:

it has 2 PAIRS of parallel lines.

opposite ANGLES are equal

diagonals are not equal

diagonals bisect at each other

o is the midpoint

Discussion

50.	TO BE ANSWERED BY ICSE STUDENTS ONLY WHO HAVE ALREADY GIVEN ICSE BOARD EXAMS. Are the trigonometric tables provided in class 10 ICSE Board exams like the ones given in concise mathematics textbook?
Answer» HELLO! I'm an ISC student, and I've GIVEN ICSE in the year 2018. When I GAVE the Mathematics EXAM, I was PROVIDED with a Trigonometric table booklet and a Logarithmic table booklet, so hopefully they're providing it this year too. Calculators are not allowed in ICSE, they're only allowed in ISC. Hope this HELPS, Thanks!

50.

TO BE ANSWERED BY ICSE STUDENTS ONLY WHO HAVE ALREADY GIVEN ICSE BOARD EXAMS. Are the trigonometric tables provided in class 10 ICSE Board exams like the ones given in concise mathematics textbook?

Answer»

HELLO!

I'm an ISC student, and I've GIVEN ICSE in the year 2018. When I GAVE the Mathematics EXAM, I was PROVIDED with a Trigonometric table booklet and a Logarithmic table booklet, so hopefully they're providing it this year too.

Calculators are not allowed in ICSE, they're only allowed in ISC.

Hope this HELPS,

Thanks!

Discussion

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≡QUESTION≡

║⊕ANSWER⊕║

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❤SANGER METHOD❗

@.....❤

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find mean ,median,mode :ci 100 to 120 ,120 to 140, 140to 160,160 to 180, 180to 200 frequency 4 ,5,8,1,2.

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Please answer...............

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If y

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How can solve this plss solve it ...I will mark you as brainlist how will answer correctly

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