332354 + Interview Questions in Secondary School in Math

1.	(3÷2√3)²=? answer with full details please..thanks in advance.
Answer» 3/4 Step-by-step explanation: 3²/(2√3*2√3) 9/12 3/4

1.

(3÷2√3)²=? answer with full details please..thanks in advance.

Answer»

3/4

Step-by-step explanation:

3²/(2√3*2√3)

9/12

3/4

Discussion

2.	(3÷2√3)²=? answer with full details please..thanks in advance
Answer» Answer: 3 square gives 9 and in the denominator the RESULT is 12 hence the result is 9/12 which gives. 75 as answer hope it HELPS

2.

(3÷2√3)²=? answer with full details please..thanks in advance

Answer»

Answer:

3 square gives 9 and in the denominator the RESULT is 12 hence the result is 9/12 which gives. 75 as answer

hope it HELPS

Discussion

3.	√3x^2+10x+8√3=0 Solution by completing the squares.
Answer» ANSWER: D=b^2-4ac =10*10-4( $\sqrt{3}$ )(8 $\sqrt{3}$ ) =100-96 D=4 $\alpha$ =b+ $\sqrt{D}$ /2a =10+2/2 $\sqrt{3}$ =12/2 $\sqrt{3}$ =6/ $\sqrt{3}$ $\beta$ =b- $\sqrt{D}$ /2a =10-2/2 $\sqrt{3}$ =8/2 $\sqrt{3}$ = 4/ $\sqrt{3}$

3.

√3x^2+10x+8√3=0 Solution by completing the squares.

Answer»

ANSWER:

D=b^2-4*a*c

=10*10-4( $\sqrt{3}$ )(8 $\sqrt{3}$ )

=100-96

D=4

$\alpha$ =b+ $\sqrt{D}$ /2a

=10+2/2 $\sqrt{3}$

=12/2 $\sqrt{3}$

=6/ $\sqrt{3}$

$\beta$ =b- $\sqrt{D}$ /2a

=10-2/2 $\sqrt{3}$

=8/2 $\sqrt{3}$

= 4/ $\sqrt{3}$

Discussion

4.	(-1)raise to the power 500
Answer» Answer: 1 since ${1}^{x} = 1$ and since 500 is EVEN hence - sign will be CHANGED to + ve

4.

(-1)raise to the power 500

Answer»

Answer:

1 since

${1}^{x} = 1$

and since 500 is EVEN hence - sign will be CHANGED to + ve

Discussion

5.	A man bought 63 sheep and sold 4/9 of it at a profit of 15 %and 1/7 at a profit of 50%. and remaining at a loss of 25%.what did he pay for the sheep if his gain was RS. 7700 on the whole transaction..
Answer» ARRE BAAP re baap.... BAHUT kathin HAI BHAI

Discussion

6.	Multiply15 h 8 min by 23
Answer» Answer: 15 hrs 8 MIN = 15×60 + 8 min = 908 min Now 908 × 28 =25,424min Divide by 60 if WANT in hrs Step-by-step explanation: Hope it HELPED Mark the brainlist ans with THANKS

6.

Multiply15 h 8 min by 23

Answer»

Answer:

15 hrs 8 MIN = 15×60 + 8 min = 908 min

Now

908 × 28 =25,424min

Divide by 60 if WANT in hrs

Step-by-step explanation:

Hope it HELPED

Mark the brainlist ans with THANKS

Discussion

7.	Pls ans ans pls..............
Answer» ANSWER: Here is your SOLUTION.. THANKS

7.

Pls ans ans pls..............

Answer»

ANSWER:

Here is your SOLUTION.. THANKS

Discussion

8.	If a=√3-√2/√3+√2=1\b
Answer» Answer: I HOPE this will hell u Step-by-step EXPLANATION: then b is equal to

8.

If a=√3-√2/√3+√2=1\b

Answer»

Answer:

I HOPE this will hell u

Step-by-step EXPLANATION:

then b is equal to

Discussion

9.	What is trapezium and looks like
Answer» Answer: A trapezoid is a four-sided FLAT shape with one pair of opposite parallel SIDES. It looks like a triangle that had its top SLICED off parallel to the BOTTOM. Usually, the trapezoid will be SITTING with the longest side down, and you will have two sloping sides for the edges

9.

What is trapezium and looks like

Answer»

Answer:

A trapezoid is a four-sided FLAT shape with one pair of opposite parallel SIDES. It looks like a triangle that had its top SLICED off parallel to the BOTTOM. Usually, the trapezoid will be SITTING with the longest side down, and you will have two sloping sides for the edges

Discussion

10.	If the circumference of circular sheet is 110m find its radius also find the area of the sheet take pi =22/7
Answer» $\huge\bold\red{HELLO!}$ THE BRAINLIEST ANSWER! BRAINLY User the rule for circumference of a circle = 2 \pi radius to find the radius= 154=222/7r 1547=222r 1078 =44r r=1078/2 r=44/2 538/22 radius=24.5rule for are of a CIRLCE = \pi r^2 =22/724.524.5 AREA= 1886.50m^2 $ItzHarsh★$

10.

If the circumference of circular sheet is 110m find its radius also find the area of the sheet take pi =22/7

Answer»

$\huge\bold\red{HELLO!}$

THE BRAINLIEST ANSWER!

BRAINLY User

the rule for circumference of a circle = 2 \pi radius

to find the radius= 154=2*22/7*r

154*7=2*22*r

1078 =44*r

r=1078/2

r=44/2

538/22

radius=24.5rule for are of a CIRLCE = \pi r^2

=22/7*24.5*24.5

AREA= 1886.50m^2

$ItzHarsh★$

Discussion

11.	What is a mathwhat is her character
Answer» ANSWER: according to me the full form MATHS is Mental Attention Towards HALF Success ............... ................This is the only CHARACTER of maths that u have to find its character yourself. mark me as brainlist

11.

What is a mathwhat is her character

Answer»

ANSWER:

according to me the full form MATHS is Mental Attention Towards HALF Success ............... ................This is the only CHARACTER of maths that u have to find its character yourself.

mark me as brainlist

Discussion

12.	Full form of ict best ans = brainliest ans
Answer» Answer: Information and COMMUNICATION Technology. mark this as brainliest PLZ follow me plz don't SPAM this plz

12.

Full form of ict best ans = brainliest ans

Answer»

Answer:

Information and COMMUNICATION Technology.

mark this as brainliest PLZ

follow me plz

don't SPAM this plz

Discussion

13.	What cross-sections do you get when you give aa)Vertical cut b) horizontal cut To the following solids? a)A cuboid b) A cylinder kept horizontallyc) A cylinder kept vertically d) A balle) A sugar cubef) An orangeg) A joker's capPlz Tell
Answer» ANSWER: MARK me as a BRAINLEIST

13.

What cross-sections do you get when you give aa)Vertical cut b) horizontal cut To the following solids? a)A cuboid b) A cylinder kept horizontallyc) A cylinder kept vertically d) A balle) A sugar cubef) An orangeg) A joker's capPlz Tell

Answer»

ANSWER:

MARK me as a BRAINLEIST

Discussion

14.	MATHS...Prove that the parallelogram circumscribing a circle is a rhombus..Plz don't give fack/false Ans..
Answer» ANSWER: HEY MATE...here's ur answer plz mark it as Brainliest good night

14.

MATHS...Prove that the parallelogram circumscribing a circle is a rhombus..Plz don't give fack/false Ans..

Answer»

ANSWER:

HEY MATE...here's ur answer

plz mark it as Brainliest

good night

Discussion

15.	Factorize this given peoblem.
Answer» ... Iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Discussion

16.	Solve the following ordinary differential equations:a) , 22cot e for cos   y x  x  ydxdy x (10) b) 0
Answer» ANSWER: i don't KNOW.....................

16.

Solve the following ordinary differential equations:a) , 22cot e for cos   y x  x  ydxdy x (10) b) 0

Answer»

ANSWER:

i don't KNOW.....................

Discussion

17.	X3-x, how to factorize it
Answer» X(x+1)(x−1) this is the ANSWER

17.

X3-x, how to factorize it

Answer»

X(x+1)(x−1)

this is the ANSWER

Discussion

18.	Find the arithmetic mean of first 6 natural numbers
Answer» Answer: Step-by-step explanation: First 6 NATURAL NUMBERS are 1, 2, 3, 4, 5, 6. \overline X = \dfrac{1+2+3+4+5+6}{6}=\dfrac{21}{6}=3.5 X = 6 1+2+3+4+5+6 = 6 21 =3.5 Mark as brainlist

18.

Find the arithmetic mean of first 6 natural numbers

Answer»

Answer:

Step-by-step explanation:

First 6 NATURAL NUMBERS are 1, 2, 3, 4, 5, 6.

\overline X = \dfrac{1+2+3+4+5+6}{6}=\dfrac{21}{6}=3.5

X

=

6

1+2+3+4+5+6

=

6

21

=3.5

Mark as brainlist

Discussion

19.	Q4 Whis is greater 3:4 or 4:5
Answer» Answer: 4:5 > 3:4 HOPE it HELPS UH....

19.

Q4 Whis is greater 3:4 or 4:5

Answer»

Answer:

4:5 > 3:4

HOPE it HELPS UH....

Discussion

20.	Divide rupees 5400 between Shraddha and Aditya in ratio 3: 2
Answer» Answer: shraddha =54003/5 =3240 Aditya =54002/5 =2160 I hope your problem is solved PLZ give response with THANKED and mark as brainliest

20.

Divide rupees 5400 between Shraddha and Aditya in ratio 3: 2

Answer»

Answer:

shraddha =5400*3/5

=3240

Aditya =5400*2/5

=2160

I hope your problem is solved PLZ give response with THANKED and mark as brainliest

Discussion

21.	91. The base of an isosceles triangle is 6 m and oneof the equal sides is 12 m. The radius of the circlethrough the vertices of the triangle is:(A) 24/√15(b) 43(0) 3/5(d) 63
Answer» Answer: 43 is the RADIUS of the CIRCLE

21.

91. The base of an isosceles triangle is 6 m and oneof the equal sides is 12 m. The radius of the circlethrough the vertices of the triangle is:(A) 24/√15(b) 43(0) 3/5(d) 63

Answer»

Answer:

43 is the RADIUS of the CIRCLE

Discussion

22.	2) If 3x + 7 = 1, then the value of 5x + 13 is ........
Answer» Answer: 3x= 1-7= -6 x= -2 5( -2)+13=3 pls MARK BRAINLIEST

22.

2) If 3x + 7 = 1, then the value of 5x + 13 is ........

Answer»

Answer:

3x= 1-7= -6

x= -2

5( -2)+13=3

pls MARK BRAINLIEST

Discussion

23.	Appu bought an old car for rs. 115000 and spent rs. 15000. then he sold it for rs. 135000.find his gain percent
Answer» Answer: 3.8% (Approximately) Step-by-step explanation: TOTAL money SPENT on buying and refurbishing the car=115000+15000=1,30,000 Money in which he sold the car=135000 Profit or GAIN PERCENTAGE P×130000×100 P= 135000-130000 5000 Hence answer = 5000÷130000×100= 3.8% (Approximately)

23.

Appu bought an old car for rs. 115000 and spent rs. 15000. then he sold it for rs. 135000.find his gain percent

Answer»

Answer: 3.8% (Approximately)

Step-by-step explanation:

TOTAL money SPENT on buying and refurbishing the car=115000+15000=1,30,000

Money in which he sold the car=135000

Profit or GAIN PERCENTAGE

P×130000×100

P= 135000-130000

5000

Hence answer = 5000÷130000×100= 3.8% (Approximately)

Discussion

24.	How to calculate basicity
Answer» Answer: Or in other words basicity of an ACID refers to the number of REPLACEABLE hydrogen atom(s)# PER molecule of an acid. So, it can also be referred as the no. of H+ ion(s) liberated in AQUEOUS solution by one molecule of an acid or the no. mole(s) of H+ IONS liberated in aqueous solution by one mole of an acid.

24.

How to calculate basicity

Answer»

Answer:

Or in other words basicity of an ACID refers to the number of REPLACEABLE hydrogen atom(s)# PER molecule of an acid. So, it can also be referred as the no. of H+ ion(s) liberated in AQUEOUS solution by one molecule of an acid or the no. mole(s) of H+ IONS liberated in aqueous solution by one mole of an acid.

Discussion

25.	The formulausedto find the area of trianglep=a+b+c
Answer» ANSWER: the formulae of FINDING the area is as the FOLLOWING: Step-by-step explanation: it is 1/2 * BASE*height

25.

The formulausedto find the area of trianglep=a+b+c

Answer»

ANSWER:

the formulae of FINDING the area is as the FOLLOWING:

Step-by-step explanation:

it is 1/2 * BASE*height

Discussion

26.	Maths full formhiplease tell mefollow melove you
Answer» the FULL FORM of MATH is MATHEMATICS

Discussion

27.	the diameter of a car wheel is 49 centimetre find how many times will it take to cover distance of 3080 centimetre
Answer» Answer: it will takes 20 TIMES for the will to cover the distance of 3080 cm Step-by-step explanation: I'm assuming you asking how many TIME does the wheel to rotate to cover the distance of 3080 cm Circumference of the CAR wheel = 2 x pi x radius = 2 x 3.141 x (49/2) = 153.938 cm so one rotation of the wheel will makes 153.938cm $\frac{1 rotation }{153.938 cm}$ x 3080 cm = 20.00 ≈ 20 rotation

27.

the diameter of a car wheel is 49 centimetre find how many times will it take to cover distance of 3080 centimetre

Answer»

Answer:

it will takes 20 TIMES for the will to cover the distance of 3080 cm

Step-by-step explanation:

I'm assuming you asking how many TIME does the wheel to rotate to cover the distance of 3080 cm

Circumference of the CAR wheel

= 2 x pi x radius

= 2 x 3.141 x (49/2)

= 153.938 cm

so one rotation of the wheel will makes 153.938cm

$\frac{1 rotation }{153.938 cm}$ x 3080 cm = 20.00 ≈ 20 rotation

Discussion

28.	Divide rupees 5400 between shraddha and ratio 3:2
Answer» Answer: Step-by-step explanation: Let the amount of money SHRADDHA and the other PERSON have be 3X and 2X respectively 3x+2x=5400 5x=5400 x=1080 3x=31040= 3120₹ 2x=21040=2080₹ Thus shraddha GETS ₹3120 and other person gets ₹2080 Hope this answer helped!

28.

Divide rupees 5400 between shraddha and ratio 3:2

Answer»

Answer:

Step-by-step explanation:

Let the amount of money SHRADDHA and the other PERSON have be 3X and 2X respectively

3x+2x=5400

5x=5400

x=1080

3x=3*1040= 3120₹

2x=2*1040=2080₹

Thus shraddha GETS ₹3120 and other person gets ₹2080

Hope this answer helped!

Discussion

29.	Point (3,2) lies on the line ax+2y=10 find a
Answer» ANSWER:x=3 and y=2 Step-by-step EXPLANATION: We have to FIND a. SOLUTION in PHOTO

29.

Point (3,2) lies on the line ax+2y=10 find a

Answer»

ANSWER:x=3 and y=2

Step-by-step EXPLANATION:

We have to FIND a. SOLUTION in PHOTO

Discussion

30.	-13-(-8)what is the answer
Answer» ANSWER: in SIMPLY it's answer = -13-(-8) = -13+8 = -5

30.

-13-(-8)what is the answer

Answer»

ANSWER:

in SIMPLY it's answer

= -13-(-8)

= -13+8

= -5

Discussion

31.	0•6x+0•8=0•28x+1•16
Answer» ANSWER:\ no solution Step-by-step EXPLANATION:

31.

0•6x+0•8=0•28x+1•16

Answer»

ANSWER:\

no solution

Step-by-step EXPLANATION:

Discussion

32.	Compare 2/7and 3/4 in mathematics
Answer» Answer: 3/4 is LARGER than 2/7 Step-by-step EXPLANATION: LCM of 7 and 4 is 28 so 2/7 becomes 8/28 and 3/4 becomes 21/28

32.

Compare 2/7and 3/4 in mathematics

Answer»

Answer:

3/4 is LARGER than 2/7

Step-by-step EXPLANATION:

LCM of 7 and 4 is 28

so 2/7 becomes 8/28

and 3/4 becomes 21/28

Discussion

33.	If a=√2+1 / √2-1 and b=√2-1 / √2+1 the find the value of (a square + b square - 4ab)
Answer» ANSWER: 30 Step-by-step EXPLANATION: PLEASE MARK as BRAINLIEST answer

33.

If a=√2+1 / √2-1 and b=√2-1 / √2+1 the find the value of (a square + b square - 4ab)

Answer»

ANSWER:

30

Step-by-step EXPLANATION:

PLEASE MARK as BRAINLIEST answer

Discussion

34.	Find the area of the shaded region for the adjoining figure measurements are shown in the figure
Answer» Answer: *AREA of rectangle=10300=3000 as there are 2 rectangles THEREFORE 6000 area of rectangle=10450=4500* area of TOTAL SHADED region = 6000+4500=10500

34.

Find the area of the shaded region for the adjoining figure measurements are shown in the figure

Answer»

Answer:

AREA of rectangle=10*300=3000

as there are 2 rectangles THEREFORE 6000

area of rectangle=10*450=4500

area of TOTAL SHADED region = 6000+4500=10500

Discussion

35.	If( x+1/x)^2=3 then find the value of x^18+x^12 +x^6+1=?Bhai koi Jawab Do Yaar pareshan kar diya hai
Answer» Answer: SYLLABUS me nehi hain DOST can't HELP U...

35.

If( x+1/x)^2=3 then find the value of x^18+x^12 +x^6+1=?Bhai koi Jawab Do Yaar pareshan kar diya hai

Answer»

Answer:

SYLLABUS me nehi hain DOST can't HELP U...

Discussion

36.	Find the nature of roots of the quadratic equation 2x2 – 4x + 3 = 0.
Answer» ANSWERING by rishi~♥~ i don't WANT any THANKS or any..MARK.........BYE...

36.

Find the nature of roots of the quadratic equation 2x2 – 4x + 3 = 0.

Answer»

ANSWERING by rishi~♥~

i don't WANT any THANKS or any..MARK.........BYE...

Discussion

37.	Can a polyhedron have 20 faces 10 edges and 8 vertices Check it
Answer» ANSWER: this is the answer for this QUESTION

37.

Can a polyhedron have 20 faces 10 edges and 8 vertices Check it

Answer»

ANSWER:

this is the answer for this QUESTION

Discussion

38.	Variance and standard deviation for the following data 45 60 62 60 50 65 58 68 44 48
Answer» ANSWER: Variance = 73.55 Standard deviation = 8.576 Step-by-step EXPLANATION: We are the following data ; X X - $Xbar$ $(X-Xbar)^{2}$ 45 45 - 56 = -11 121 60 60 - 56 = 4 16 62 62 - 56 = 6 36 60 60 - 56 = 4 16 50 50 - 56 = -6 36 65 65 - 56 = 9 81 58 58 - 56 = 2 4 68 68 - 56 = 12 144 44 44 - 56 = -12 144 48 48 - 56 = -8 64 Firstly, we will calculate the mean of above data; Mean = $\frac{\sum X}{n}$ = $\frac{45+60+62+60+50+65+58+68+44+48}{10}$ = $\frac{560}{10}$ = 56 Variance formula = $\frac{\sum (X-Xbar)^{2} }{n-1}$ = $\frac{662}{10-1}$ = 73.55 Standard deviation = $\sqrt{Variance}$ = $\sqrt{73.55}$ = 8.576

38.

Variance and standard deviation for the following data 45 60 62 60 50 65 58 68 44 48

Answer»

ANSWER:

Variance = 73.55

Standard deviation = 8.576

Step-by-step EXPLANATION:

We are the following data ;

X X - $Xbar$ $(X-Xbar)^{2}$

45 45 - 56 = -11 121

60 60 - 56 = 4 16

62 62 - 56 = 6 36

60 60 - 56 = 4 16

50 50 - 56 = -6 36

65 65 - 56 = 9 81

58 58 - 56 = 2 4

68 68 - 56 = 12 144

44 44 - 56 = -12 144

48 48 - 56 = -8 64

Firstly, we will calculate the mean of above data;

Mean = $\frac{\sum X}{n}$ = $\frac{45+60+62+60+50+65+58+68+44+48}{10}$ = $\frac{560}{10}$ = 56

Variance formula = $\frac{\sum (X-Xbar)^{2} }{n-1}$ = $\frac{662}{10-1}$ = 73.55

Standard deviation = $\sqrt{Variance}$ = $\sqrt{73.55}$ = 8.576

Discussion

39.	The total cost of making a spherical ball is Rs 33,957 at the rate of Rs 7 per cubic meter. What will bethe radius of this ball? Also find its surface area.
Answer» Answer:13 Step-by-step EXPLANATION:

39.

The total cost of making a spherical ball is Rs 33,957 at the rate of Rs 7 per cubic meter. What will bethe radius of this ball? Also find its surface area.

Answer»

Answer:13

Step-by-step EXPLANATION:

Discussion

40.	(ii) 15 xy - 6x + 5y - 2
Answer» (5y−2)(3x+1) this is the ANSWER

40.

(ii) 15 xy - 6x + 5y - 2

Answer»

(5y−2)(3x+1)

this is the ANSWER

Discussion

41.	Wha t is corresponding altitude
Answer» The ALTITUDE (or height) of a parallelogram is the perpendicular DISTANCE from the base to the opposite side (which MAY have to be extended). In the figure above, the altitude corresponding to the base CD is shown. Opposite sides are congruent (equal in length) and PARALLEL.

41.

Wha t is corresponding altitude

Answer»

The ALTITUDE (or height) of a parallelogram is the perpendicular DISTANCE from the base to the opposite side (which MAY have to be extended). In the figure above, the altitude corresponding to the base CD is shown. Opposite sides are congruent (equal in length) and PARALLEL.

Discussion

42.	Find the slop of the having inclination 60degree
Answer» ANSWER: under-root 3 Step-by-step explanation: TAN 60= $\sqrt{3}$ its SLOPE is root3

42.

Find the slop of the having inclination 60degree

Answer»

ANSWER:

under-root 3

Step-by-step explanation:

TAN 60= $\sqrt{3}$

its SLOPE is root3

Discussion

43.	7+2-2
Answer» Answer: 7+2-2×2/2+2 Step-by-step explanation: 7+2-2×1+2 ( by BODMAS) 7+2-2+2 9+2-2 THEREFORE 9 is ANS.

43.

7+2-2

Answer»

Answer:

7+2-2×2/2+2

Step-by-step explanation:

7+2-2×1+2 ( by BODMAS)

7+2-2+2

9+2-2

THEREFORE 9 is ANS.

Discussion

44.	1 upon 3 minus 1 upon 4 is equal to
Answer» Answer: 1 upon 12 Step-by-step explanation: 1/3 - 1/4 1) LCM of DENOMINATOR lcm of 3 and 4 is 12 2)multiply the number required to make the denominator EQUAL to the lcm 14/34 - 13/13 =4/12-3/12 3)subtract the numerator 4-3=1 ans:1/12

44.

1 upon 3 minus 1 upon 4 is equal to

Answer»

Answer:

1 upon 12

Step-by-step explanation:

1/3 - 1/4

1) LCM of DENOMINATOR

lcm of 3 and 4 is 12

2)multiply the number required to make the denominator EQUAL to the lcm

1*4/3*4 - 1*3/1*3

=4/12-3/12

3)subtract the numerator

4-3=1

ans:1/12

Discussion

45.	1. If sec 0 + tan 0 = x, then sec 0 =
Answer» ANSWER: if sec 0 + TAN 0 = x => sec 0 = x - tan 0

45.

1. If sec 0 + tan 0 = x, then sec 0 =

Answer»

ANSWER:

if sec 0 + TAN 0 = x

=> sec 0 = x - tan 0

Discussion

46.	the Length breadth and the height of a box area in the ratio 3 ratio 2 ratio 1 and its surface area is 2662 metre square find its deamination
Answer» $\huge\mathbb{SOLUTION:-}$ Let the SIDE be x 3x ,2x and x And SURFACE area =2662sq.m .Now $\boxed{\sf{T.S.A\:of\: cuboid=2(lb+bh+lh)}}$ $\bf\underline{\red{According \:To\: Question:-}}$ $\sf\implies 2662=2(3x\times 2x+2x\times x+x\times 3x)\\ \\ \sf\implies \cancel{\dfrac{2662}{2}}= 6x{}^{2}+2x{}^{2}+3x{}^{2}\\ \\ \sf\implies 1331= 11x{}^{2}\\ \\ \sf\implies \cancel{\dfrac{1331}{11}}=x{}^{2}\\ \\ \sf\implies 121=x{}^{2}\\ \\ \sf\implies \sqrt{121}=x\\ \\ \sf\implies {\blue{x=11}}$ The value of x is 11 Now the SIDES of BOX $\sf\bullet 3\times 11= 33m\\ \\ \sf\bullet 2\times 11=22m\\ \\ \sf\bullet x=11m$ $\sf\underline{Sides\:of\:box= 33m\:22m\:11m}$

46.

the Length breadth and the height of a box area in the ratio 3 ratio 2 ratio 1 and its surface area is 2662 metre square find its deamination

Answer»

$\huge\mathbb{SOLUTION:-}$

Let the SIDE be x
3x ,2x and x
And SURFACE area =2662sq.m

.Now

$\boxed{\sf{T.S.A\:of\: cuboid=2(lb+bh+lh)}}$

$\bf\underline{\red{According \:To\: Question:-}}$

$\sf\implies 2662=2(3x\times 2x+2x\times x+x\times 3x)\\ \\ \sf\implies \cancel{\dfrac{2662}{2}}= 6x{}^{2}+2x{}^{2}+3x{}^{2}\\ \\ \sf\implies 1331= 11x{}^{2}\\ \\ \sf\implies \cancel{\dfrac{1331}{11}}=x{}^{2}\\ \\ \sf\implies 121=x{}^{2}\\ \\ \sf\implies \sqrt{121}=x\\ \\ \sf\implies {\blue{x=11}}$

The value of x is 11

Now the SIDES of BOX

$\sf\bullet 3\times 11= 33m\\ \\ \sf\bullet 2\times 11=22m\\ \\ \sf\bullet x=11m$

$\sf\underline{Sides\:of\:box= 33m\:22m\:11m}$

Discussion

47.	If two zeros of the polynomial P(x)=x^3+2x^2-9x-18 are 3 and -3 find other zeros of the polynomial
Answer» <P>ANSWER: GIVEN, P(X)= ${x}^{3} + {2x}^{2} - 9x - 18 \\ = 0 {}^{3} +( 2 \times {0}^{2} ) -( 9 \times 0) - 18 \\ = 0 + 0 - 0 - 18 \\ = - 18$

47.

If two zeros of the polynomial P(x)=x^3+2x^2-9x-18 are 3 and -3 find other zeros of the polynomial

Answer»

<P>ANSWER:

GIVEN, P(X)=

${x}^{3} + {2x}^{2} - 9x - 18 \\ = 0 {}^{3} +( 2 \times {0}^{2} ) -( 9 \times 0) - 18 \\ = 0 + 0 - 0 - 18 \\ = - 18$

Discussion

48.	Appu bought an old car for rs. 115000 and spent rs. 15000 on its repair then he sold it for rs. 135000 find his gain percent
Answer» Answer:50/13% profit Step-by-step EXPLANATION: TOTAL SPEND RS.=115000+15000 CP=130000 SP=135000 PROFIT=135000-130000=5000 P%=5000/130000*100=50/13%. ANS

48.

Appu bought an old car for rs. 115000 and spent rs. 15000 on its repair then he sold it for rs. 135000 find his gain percent

Answer»

Answer:50/13% profit

Step-by-step EXPLANATION:

TOTAL SPEND RS.=115000+15000

CP=130000

SP=135000

PROFIT=135000-130000=5000

P%=5000/130000*100=50/13%. ANS

Discussion

49.	And the values of K so that the area of the triangle withvertices [1,-1) {-4, 2k)and (-k,-5) is 24 sq units
Answer» Answer: Area of triangle=1/2\|x1(y2-y3)+X2(y3-y1)+X3(y1-y2)\| Here x1=1,x2=-4.x3=-k y1=-1,y2=2k,y3=-5 SOLUTION:...... 1/2\|1(2k-(-5)+-4(-5-(-1)+-k(-1-2k)\|=24 1/2\|2k+5+16+k-2k\|=24 1/2\|k+21\|=24 \|k+21\|=24×2=48 \|k+21\|=48 \|k\|=48-21=27 k=27

49.

And the values of K so that the area of the triangle withvertices [1,-1) {-4, 2k)and (-k,-5) is 24 sq units

Answer»

Answer:

Area of triangle=1/2|x1(y2-y3)+X2(y3-y1)+X3(y1-y2)|

Here x1=1,x2=-4.x3=-k

y1=-1,y2=2k,y3=-5

SOLUTION:......

1/2|1(2k-(-5)+-4(-5-(-1)+-k(-1-2k)|=24

1/2|2k+5+16+k-2k|=24

1/2|k+21|=24

|k+21|=24×2=48

|k+21|=48

|k|=48-21=27

k=27

Discussion

50.	What is the value of pay
Answer» Answer: 22÷7 or 3.14. I THINK this only

50.

What is the value of pay

Answer»

Answer:

22÷7 or 3.14. I THINK this only

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