332354 + Interview Questions in Secondary School in Math

1.	What is the least value of x such that the number 4832x12 is divisible by 8?Select one:a. 1b. 9c. 3d. 5
Answer» Answer: 1 is the answer Step-by-step explanation: 4832112/8=604014

1.

What is the least value of x such that the number 4832x12 is divisible by 8?Select one:a. 1b. 9c. 3d. 5

Answer»

Answer:

1 is the answer

Step-by-step explanation:

4832112/8=604014

Discussion

2.	Find tanA+cotA if a=2pi/3
Answer» ANSWER: ≈27 Step-by-step EXPLANATION: =TAN a+ COT a =tan a+ 1/tan a =(tan²a + 1)/tan a =(tan a × tan a + 1)/tan a =(tan 2pi/3×tan2pi/3 +1)/tan2pi/3 =(1.34×10∧-3 +1)/0.037 =(1.00134)/0.037 ≈27

2.

Find tanA+cotA if a=2pi/3

Answer»

ANSWER:

≈27

Step-by-step EXPLANATION:

=TAN a+ COT a

=tan a+ 1/tan a

=(tan²a + 1)/tan a

=(tan a × tan a + 1)/tan a

=(tan 2pi/3×tan2pi/3 +1)/tan2pi/3

=(1.34×10∧-3 +1)/0.037

=(1.00134)/0.037

≈27

Discussion

3.	if -4 is a root of quadratic equation X ² + bx - 4 =0 and the quadratic equation x²+bx+k=0 has equal roots the value of k...
Answer» Step-by-step EXPLANATION: F(-4)= (-4)²+b(-4) -4 0 = 16-4b-4 0= 12-4b 4b = 12 b = 3 x²+3x+k = 0 b²-4ac = 0 9-4k =0 9=4k k= 9/4

3.

if -4 is a root of quadratic equation X ² + bx - 4 =0 and the quadratic equation x²+bx+k=0 has equal roots the value of k...

Answer»

Step-by-step EXPLANATION:

F(-4)= (-4)²+b(-4) -4

0 = 16-4b-4

0= 12-4b

4b = 12

b = 3

x²+3x+k = 0

b²-4ac = 0

9-4k =0

9=4k

k= 9/4

Discussion

4.	Hiii!!!!!!!!!! Question in Attachment Answer it With Explanation ✌ ✌ ✌ ✌
Answer» Answer: Let us consider Time is taken = t Speed = x Distance = d Time = Distance/Speed or Speed = Distance/time x = d/t d = xt………………………………….(1) Case 1: d = (x + 10)(t – 2) d = xt – 2x +10t -20 d = d – 2x +10t -20 [from (1) xt = d] 10t – 2x = 20…………………………………..(2) Case2: d = (x – 10)(t + 3) d = xt + 3X -10t – 30 d = d + 3x -10t – 30 [from (1) xt = d] 3x -10t = 30…………………………………..(3) Adding equation (2) and (3) (10t – 2x + 3x -10t) = 20 + 30 x = 50 Substituting the VALUE of x in 2 10t – 2 × 50 = 20 10t = 100 + 20 10t = 120 t = 12 hours Now substitute the value of t and in x in equation (1) Distance d = xt d = 50 × 12 d = 600 km Therefore distance covered by the train is 600km. HOPE THIS HELPS YOU PLZZ MARK AS BRAINLIEST

4.

Hiii!!!!!!!!!! Question in Attachment Answer it With Explanation ✌ ✌ ✌ ✌

Answer»

Answer:

Let us consider

Time is taken = t

Speed = x

Distance = d

Time = Distance/Speed

or

Speed = Distance/time

x = d/t

d = xt………………………………….(1)

Case 1:

d = (x + 10)(t – 2)

d = xt – 2x +10t -20

d = d – 2x +10t -20 [from (1) xt = d]

10t – 2x = 20…………………………………..(2)

Case2:

d = (x – 10)(t + 3)

d = xt + 3X -10t – 30

d = d + 3x -10t – 30 [from (1) xt = d]

3x -10t = 30…………………………………..(3)

Adding equation (2) and (3)

(10t – 2x + 3x -10t) = 20 + 30

x = 50

Substituting the VALUE of x in 2

10t – 2 × 50 = 20

10t = 100 + 20

10t = 120

t = 12 hours

Now substitute the value of t and in x in equation (1)

Distance d = xt

d = 50 × 12

d = 600 km

Therefore distance covered by the train is 600km.

HOPE THIS HELPS YOU

PLZZ MARK AS BRAINLIEST

Discussion

5.	QUESTION 5. The polynomial of type ax + bx + c, a = 0 is of type(a) linear(b) quadratic(c) cubic
Answer» HEY mate here's your answer _________________________ _________________________ The polynomial of TYPE AX + bx + c, a = 0 is of quadratic. _________________________ _________________________ hope it helps mark as BRAINLIST

5.

QUESTION 5. The polynomial of type ax + bx + c, a = 0 is of type(a) linear(b) quadratic(c) cubic

Answer»

HEY mate

here's your answer

_________________________

The polynomial of TYPE AX + bx + c, a = 0 is of quadratic.

_________________________

hope it helps

6.	Classify the organisms according to organisations. Do not spam FOLLLOW. TEAM. JOKER*
Answer» Step-by-step explanation: here's your answer Scientists have defined SEVERAL major categories for classifying organisms: DOMAIN, kingdom, PHYLUM, class, order, family, GENUS, and species. hope it's HELPFUL for you ☺️

Classify the organisms according to organisations. Do not spam FOLLLOW. TEAM. JOKER*

Answer»

Step-by-step explanation:

here's your answer

Scientists have defined SEVERAL major categories for classifying organisms: DOMAIN, kingdom, PHYLUM, class, order, family, GENUS, and species.

hope it's HELPFUL for you ☺️

Discussion

7.	What No. should be added to -(1/2 +1/3 + 1/5) to get -2
Answer» ANSWER: -29/30 Step-by-step explanation: LET the NUMBER be x. -(1/2+1/3+1/5) +x=(-2) -(15+10+6/30) +x=(-2) -(31/30) +x=(-2) x=(31/30)-(2) x=31-60/30 x=-29/30

7.

What No. should be added to -(1/2 +1/3 + 1/5) to get -2

Answer»

ANSWER:

-29/30

Step-by-step explanation:

LET the NUMBER be x.

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

-(15+10+6/30) +x=(-2)

-(31/30) +x=(-2)

x=(31/30)-(2)

x=31-60/30

x=-29/30

Discussion

8.	Find the zeroes of cubic p(x) =xcube-5xsquare+6x
Answer» ANSWER: HOPE it WORKS..............................™✌️✌️

8.

Find the zeroes of cubic p(x) =xcube-5xsquare+6x

Answer»

ANSWER:

HOPE it WORKS..............................™✌️✌️

Discussion

9.	1. Prove that the internal bisector of an angle of a triangledivides the opposites side internally is the ratio of theCorresponding sides containing the angle.
Answer» Answer: Given: Let ABC be the triangle AD be INTERNAL bisector of ∠BAC which meet BC at D To prove: DC BD= AC AB Draw CE∥DA to meet BA produced at E Since CE∥DA and AC is the transversal. ∠DAC=∠ACE (alternate angle ) .... (1) ∠BAD=∠AEC (corresponding angle) .... (2) Since AD is the angle bisector of ∠A ∴∠BAD=∠DAC .... (3) From (1), (2) and (3), we have ∠ACE=∠AEC In △ACE, ⇒AE=AC (∴ SIDES opposite to EQUAL angles are equal) In △BCE, ⇒CE∥DA ⇒ DC BD = AE BA ....(Thales Theorem) ⇒ DC BD = AC AB ....(∴AE=AC)

9.

1. Prove that the internal bisector of an angle of a triangledivides the opposites side internally is the ratio of theCorresponding sides containing the angle.

Answer»

Answer:

Given:

Let ABC be the triangle

AD be INTERNAL bisector of ∠BAC which meet BC at D

To prove:

DC BD= AC AB

Draw CE∥DA to meet BA produced at E

Since CE∥DA and AC is the transversal.

∠DAC=∠ACE (alternate angle ) .... (1)

∠BAD=∠AEC (corresponding angle) .... (2)

Since AD is the angle bisector of ∠A

∴∠BAD=∠DAC .... (3)

From (1), (2) and (3), we have

∠ACE=∠AEC

In △ACE,

⇒AE=AC

(∴ SIDES opposite to EQUAL angles are equal)

In △BCE,

⇒CE∥DA

⇒ DC BD = AE BA ....(Thales Theorem)

⇒ DC BD = AC AB ....(∴AE=AC)

Discussion

10.	Subtract 64/9 - 37/9
Answer» 64/9 - 37/9 =0.33333... Or 1/3

10.

Subtract 64/9 - 37/9

Answer»

6*4/9 - 3*7/9

=0.33333...

Or

1/3

Discussion

11.	Find the addetive inverse of:7/-10 8/5
Answer» ANSWER: -7/+10 -8/-5 Step-by-step EXPLANATION: HOPE this HELPS to you

11.

Find the addetive inverse of:7/-10 8/5

Answer»

ANSWER:

-7/+10 -8/-5

Step-by-step EXPLANATION:

HOPE this HELPS to you

Discussion

12.	Find the smallest number by which 121945 should be divided to make it a perfect square
Answer» ANSWER: Step-by-step EXPLANATION:

12.

Find the smallest number by which 121945 should be divided to make it a perfect square

Answer»

ANSWER:

Step-by-step EXPLANATION:

Discussion

13.	If f( x ) is equal to x cube + x square - a x + b is divisible by x square minus x, then find the values of a and b.
Answer» I ALSO don't KNOW this ANSWER

Discussion

14.	Write it p by Q form 2.315
Answer» ANSWER: GIVE me THANKS if my answer is CORRECT

14.

Write it p by Q form 2.315

Answer»

ANSWER:

GIVE me THANKS if my answer is CORRECT

Discussion

15.	Find x and y ?correct answer will be marked as brainliest
Answer» Step-by-step EXPLANATION: HOPE you will UNDERSTAND

15.

Find x and y ?correct answer will be marked as brainliest

Answer»

Step-by-step EXPLANATION:

HOPE you will UNDERSTAND

Discussion

16.	For what value of k given equation (4k-4)x²+(2k+4)+8x+1= 0 is perfect square...
Answer» Answer: SOLUTION : Given : (4 - K) x² + (2k+ 4)x + (8k + 1) = 0 On comparing the given equation with ax² + bx + c = 0 Here, a = 4 - k , b = 2k + 4 , c = 8k + 1 D(discriminant) = b² – 4ac D = (2k + 4)² - 4(4 - k)(8k + 1) D = [(2k)² + 4² + 2 × 2k × 4 ) - 4(32k + 4 - 8k² - k) [(a + b)² = a² + b² + 2ab] = 4k² +16 + 16k - 4(32k + 4 - 8k² - k) = 4(k² +4 + 4 k ) - 4(32k + 4 - 8k² - k) = 4[k² + 4 + 4 k - 32k + k - 4 + 8k² ] = 4 [k² + 8k² + 4k + k - 32k + 4 - 4] = 4 [9k² - 27k] Since, the given equation is a PERFECT square Therefore D = 0 4 [9k² - 27k] = 0 [9k² - 27k] = 0 3k (k - 3) = 0 3k = 0 or (k - 3) = 0 k = 0 or k = 3 Hence, the value of k be 0 or 3 to be perfect square. Step-by-step explanation:

16.

For what value of k given equation (4k-4)x²+(2k+4)+8x+1= 0 is perfect square...

Answer»

Answer:

SOLUTION :

Given : (4 - K) x² + (2k+ 4)x + (8k + 1) = 0

On comparing the given equation with ax² + bx + c = 0

Here, a = 4 - k , b = 2k + 4 , c = 8k + 1

D(discriminant) = b² – 4ac

D = (2k + 4)² - 4(4 - k)(8k + 1)

D = [(2k)² + 4² + 2 × 2k × 4 ) - 4(32k + 4 - 8k² - k)

[(a + b)² = a² + b² + 2ab]

= 4k² +16 + 16k - 4(32k + 4 - 8k² - k)

= 4(k² +4 + 4 k ) - 4(32k + 4 - 8k² - k)

= 4[k² + 4 + 4 k - 32k + k - 4 + 8k² ]

= 4 [k² + 8k² + 4k + k - 32k + 4 - 4]

= 4 [9k² - 27k]

Since, the given equation is a PERFECT square

Therefore D = 0

4 [9k² - 27k] = 0

[9k² - 27k] = 0

3k (k - 3) = 0

3k = 0 or (k - 3) = 0

k = 0 or k = 3

Hence, the value of k be 0 or 3 to be perfect square.

Step-by-step explanation:

Discussion

17.	Agar ek school mei 224healthy boys hai aur 26unhealthy boys hal. Tohkitne unhealthy boys keschool join karne seunhealthy boys kipratishat 20% ho jayegi?
Answer» Answer: 30 Step-by-step EXPLANATION: MARK me BRILLIANT PLEASE

17.

Agar ek school mei 224healthy boys hai aur 26unhealthy boys hal. Tohkitne unhealthy boys keschool join karne seunhealthy boys kipratishat 20% ho jayegi?

Answer»

Answer:

30

Step-by-step EXPLANATION:

MARK me BRILLIANT PLEASE

Discussion

18.	2x-3/x= 1 . solve the equation by factorisation method
Answer» Answer: (X + 1)(2x - 3) Step-by-step explanation: Multiplying by x on both sides 2x^2 - 3 = x = 2x^2 - x - 3 = 0 = 2x^2 - 3x + 2x - 3 = 0 = x(2x - 3) + 1(2x - 3) = (x + 1)(2x - 3) HOPE IT HELPS YOU PLEASE MARK ME AS THE BRAINLIEST

18.

2x-3/x= 1 . solve the equation by factorisation method

Answer»

Answer:

(X + 1)(2x - 3)

Step-by-step explanation:

Multiplying by x on both sides

2x^2 - 3 = x

= 2x^2 - x - 3 = 0

= 2x^2 - 3x + 2x - 3 = 0

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

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

HOPE IT HELPS YOU

PLEASE MARK ME AS THE BRAINLIEST

Discussion

19.	If the sp of flower vase is equal to 4/5of its cp , fid gain percernt
Answer» Step-by-step explanation: SP of FLOWER VASE is EQUAL to $\sf\dfrac{4}{5} ×CP$ It means SP is $\sf\dfrac{5}{5}$ $\sf{Gain=SP-CP}$ $\sf{Gain=>}$ $\sf{\dfrac{5-4}{5}}={\dfrac{1}{5}}$ $\sf{ Converting\:into\: percentage→}$ $\sf\dfrac{1}{\cancel{5}} × {\cancel{100}}=20$ % $→20$ % Hope it HELPS

19.

If the sp of flower vase is equal to 4/5of its cp , fid gain percernt

Answer»

Step-by-step explanation:

SP of FLOWER VASE is EQUAL to $\sf\dfrac{4}{5} ×CP$

It means SP is $\sf\dfrac{5}{5}$

$\sf{Gain=SP-CP}$

$\sf{Gain=>}$ $\sf{\dfrac{5-4}{5}}={\dfrac{1}{5}}$

$\sf{ Converting\:into\: percentage→}$ $\sf\dfrac{1}{\cancel{5}} × {\cancel{100}}=20$ %

$→20$ %

Hope it HELPS

Discussion

20.	Ramesh solved 2/7 part of an exercise while saurav solved 4/5of it who solved bigger part
Answer» ANSWER: SAURAV has solved more part if my answer is CORRECT give me thanks

20.

Ramesh solved 2/7 part of an exercise while saurav solved 4/5of it who solved bigger part

Answer»

ANSWER:

SAURAV has solved more part

if my answer is CORRECT give me thanks

Discussion

21.	If a and.b are the zeroes of 2x²+5(x-2) then find product of a and b
Answer» ANSWER: -4 Step-by-step explanation:the PRODUCT of root = c×a THEREFORE -2×2= -4

21.

If a and.b are the zeroes of 2x²+5(x-2) then find product of a and b

Answer»

ANSWER: -4

Step-by-step explanation:the PRODUCT of root = c×a

THEREFORE -2×2= -4

Discussion

22.	[(-8+____]+____=_____+[(-3)+____]=-3 give me solution
Answer» [ (-8) + 8 ] + (- 3) = - 3 + [ (-3) + 3 ] = - 3 ⚠️⚠️ⓉⒽⒶⓃⓀⓈ⚠️⚠️

22.

[(-8+__]+=_+[(-3)+__]=-3 give me solution

Answer»

[ (-8) + 8 ] + (- 3) = - 3 + [ (-3) + 3 ] = - 3

⚠️⚠️ⓉⒽⒶⓃⓀⓈ⚠️⚠️

Discussion

23.	If t+2=-3then t eqauls
Answer» HELLO GIYA... t+2= -3 t= -2-3 t=(-5) Hope it helps you........ <<<<<<>>>

23.

If t+2=-3then t eqauls

Answer»

HELLO GIYA...

t+2= -3

t= -2-3

t=(-5)

Hope it helps you........

<<<<<<>>>

Discussion

24.	The perimeter of a rectangular field is 140 metre if the length of the field is increased by 2 metre and breadth decrease by 3 metre and its area decreased by 64 square metre find the length and the breadth of the field
Answer» ANSWER: hqiu3iw89w93uu33uu2u2u2u2ueuwi2ueueue Step-by-step EXPLANATION: juddueuudjjj CUTS jdojcisowduuwifire

24.

The perimeter of a rectangular field is 140 metre if the length of the field is increased by 2 metre and breadth decrease by 3 metre and its area decreased by 64 square metre find the length and the breadth of the field

Answer»

ANSWER:

hqiu3iw89w93uu33uu2u2u2u2ueuwi2ueueue

Step-by-step EXPLANATION:

juddueuudjjj CUTS jdojcisowduuwifire

Discussion

25.	Write three irrational number between 2/3 and 3/5
Answer» $\underline\bold\red{\mathcal{Question}}$ Write three IRRATIONAL number between 2/3 and 3/5 $\underline\bold\red{\mathcal{To \: find}}$ Three rational NUMBERS between $\frac{2}{3} \: and \: \frac{3}{5}$ $\underline\bold\red{\mathcal{Solution}}$ LCM of 3 and 5 => 15 So, $\frac{2 \times 5}{3 \times 5} = \frac{10}{15}$ and $\frac{3 \times 3}{5 \times 3} = \frac{9}{15}$ Between 10/15 and 9/15,we are able to see rational number, so we will multiply it further by 10 $\frac{10 \times 10}{15 \times 10} = \frac{100}{150}$ and $\frac{9\times 15}{15 \times 10} = \frac{135}{150}$ So,Three rational number between 2/3 and 3/5 are=> $\frac{111}{150}, \frac{112}{150}, \frac{115}{150}$ You can write any three rational numbers between 100/150 and 135/150. ★Note★ Rational numbers are the number which can be written in p/Q form numerator p and a non-zero denominator q. Rational numbers are INFINITE between any two number

25.

Write three irrational number between 2/3 and 3/5

Answer»

$\underline\bold\red{\mathcal{Question}}$

Write three IRRATIONAL number between 2/3 and 3/5

$\underline\bold\red{\mathcal{To \: find}}$

Three rational NUMBERS between

$\frac{2}{3} \: and \: \frac{3}{5}$

$\underline\bold\red{\mathcal{Solution}}$

LCM of 3 and 5 => 15

So,

$\frac{2 \times 5}{3 \times 5} = \frac{10}{15}$

and

$\frac{3 \times 3}{5 \times 3} = \frac{9}{15}$

Between 10/15 and 9/15,we are able to see rational number, so we will multiply it further by 10

$\frac{10 \times 10}{15 \times 10} = \frac{100}{150}$

and

$\frac{9\times 15}{15 \times 10} = \frac{135}{150}$

So,Three rational number between 2/3 and 3/5 are=>

$\frac{111}{150}, \frac{112}{150}, \frac{115}{150}$

You can write any three rational numbers between 100/150 and 135/150.

★Note★

Rational numbers are the number which can be written in p/Q form numerator p and a non-zero denominator q.

Rational numbers are INFINITE between any two number

Discussion

26.	A Car Covers 25 km in an hour. How muchwill it cover in150 minutes
Answer» ANSWER: it will TAKE 75KM to cover 150 minutes

26.

A Car Covers 25 km in an hour. How muchwill it cover in150 minutes

Answer»

ANSWER:

it will TAKE 75KM to cover 150 minutes

Discussion

27.	If x=2+root3; find value of x cube +1/x cube
Answer» GIVEN: x=2+√3 To FIND: x³+(1/x) ³ Solution: (2+√3) ³+(1) ³/(2+√3) ³ 26+15√3+1/26+15√3 1341+780√3/26+15√3. 1419.94

27.

If x=2+root3; find value of x cube +1/x cube

Answer»

Solution:

(2+√3) ³+(1) ³/(2+√3) ³

26+15√3+1/26+15√3

1341+780√3/26+15√3.

1419.94

Discussion

28.	If f (x)=x square -4 find f (4)
Answer» $f(x) =x^2-4$ $f(4) = 4^2-4$ $= 16-4$ $= 12$

28.

If f (x)=x square -4 find f (4)

Answer»

$f(x) =x^2-4$

$f(4) = 4^2-4$

$= 16-4$

$= 12$

Discussion

29.	Find the slope of a line making angle teeta =60 with the positive direction of x-axis
Answer» *HYY* *Dude* *If (x,2) is an interior point of the triangle FORMED by lines x+y=4, 3x-7y=8,4x-y=31. ...* *What is the equation of a straight line which PASSES through point (2,9) and MAKES an angle of 135 degrees with a positive direction of the x-axis? ...* *What is the angle of A+B with the x-axis if A=4i and B=-4j?* *HOPE* *it's helps* *you* ✨

29.

Find the slope of a line making angle teeta =60 with the positive direction of x-axis

Answer»

HYY Dude

If (x,2) is an interior point of the triangle FORMED by lines x+y=4, 3x-7y=8,4x-y=31. ...

What is the equation of a straight line which PASSES through point (2,9) and MAKES an angle of 135 degrees with a positive direction of the x-axis? ...

What is the angle of A+B with the x-axis if A=4i and B=-4j?

HOPE it's helps you ✨

Discussion

30.	Find the diameter of a circle whose circumference is 22cm
Answer» $circumference = 2\pi \: r$ $22 = 2 \times \frac{22}{7} \times r$ $\frac{22}{2} \times \frac{7}{22} = r$ $r = \frac{7}{2}$ $r = 3.5 \: cm$ ${\mathbf{\red { \| } {\red {\overline {\underline {\gray { \:brainliest\:if\: it \:helps \:you\: }}}}}}}{\red{ \| }}$ ${\purple{\underline{\overline{\blue{\tt{hope\:it\:will\:help\:you}}}}}}$ ${\orange{\fbox{\underline{\gray{\mathfrak{stay \:blessed}}}}}}$ ${\red{\fbox{\underline{\green{\tt{be \:happy}}}}}}$ ${\red{\fbox{\gray{\fbox{\orange{\ddot{\smile}}}}}}}$

30.

Find the diameter of a circle whose circumference is 22cm

Answer»

$circumference = 2\pi \: r$

$22 = 2 \times \frac{22}{7} \times r$

$\frac{22}{2} \times \frac{7}{22} = r$

$r = \frac{7}{2}$

$r = 3.5 \: cm$

${\mathbf{\red { | } {\red {\overline {\underline {\gray { \:brainliest\:if\: it \:helps \:you\: }}}}}}}{\red{ | }}$

${\purple{\underline{\overline{\blue{\tt{hope\:it\:will\:help\:you}}}}}}$

${\orange{\fbox{\underline{\gray{\mathfrak{stay \:blessed}}}}}}$

${\red{\fbox{\underline{\green{\tt{be \:happy}}}}}}$

${\red{\fbox{\gray{\fbox{\orange{\ddot{\smile}}}}}}}$

Discussion

31.	+ple 16 : Simplify the following expressions:(1) (5+77) (2 + 15)(ii) (13 + v7)3
Answer» Answer: 1) (5+77) (2+15) → 82×17 →1394

31.

+ple 16 : Simplify the following expressions:(1) (5+77) (2 + 15)(ii) (13 + v7)3

Answer»

Answer:

1) (5+77) (2+15)

→ 82×17

→1394

Discussion

32.	The multiplicative inverse of 0/1 is
Answer» Answer: *HEY* *mate* *The* *multiplicative* *inverse* of *this* *number* *does* *not* *EXIST. I hope* it *helps* *you* *PLZ* *mark* me as *brainliest* *and* *FOLLOW* me.......

32.

The multiplicative inverse of 0/1 is

Answer»

Answer:

HEY mate

The multiplicative inverse of this number does not EXIST.

I hope it helps you

PLZ mark me as brainliest and FOLLOW me.......

Discussion

33.	If –1 and − 3 /2 are the zeroes of a quadratic polynomial, then find the quadratic polynomial.pls answer fast
Answer» Answer: 2x²+5x+3 Step-by-step explanation: SINCE the TWO ZEROS are given then we make the FACTORS to get the POLYNOMIAL

33.

If –1 and − 3 /2 are the zeroes of a quadratic polynomial, then find the quadratic polynomial.pls answer fast

Answer»

Answer:

2x²+5x+3

Step-by-step explanation:

SINCE the TWO ZEROS are given then we make the FACTORS to get the POLYNOMIAL

Discussion

34.	Q1: factarise : (I) x3= 2×2 -x+2.
Answer» ANSWER: Is 3 POWER or not......

34.

Q1: factarise : (I) x3= 2×2 -x+2.

Answer»

ANSWER:

Is 3 POWER or not......

Discussion

35.	The salary of a clerk was increased by 7%. If his present salary is rs 1519.40, what it wasbefore the increment ?
Answer» ANSWER: RS. 1,420 Step-by-step EXPLANATION:

35.

The salary of a clerk was increased by 7%. If his present salary is rs 1519.40, what it wasbefore the increment ?

Answer»

ANSWER:

RS. 1,420

Step-by-step EXPLANATION:

Discussion

36.	There are two metallic wires of the same thickness made from iron and silver if the length or iron wire is 12 cm what should be the length of silver wire which is equal to the resistance of iron wire ?data: resistance of iron =10*10^-8
Answer» $\bold{\huge{\underline{\underline{\rm{ Answer!:}}}}}$ *Length=7.5 cm $\bold{\huge{\underline{\underline{\rm{ Explanation! :}}}}}$ Length of the IRON wire = 12 cm Resistance of Iron wire = Resistance of SILVER Wire Also, Area of cross section, A of Iron wire = Area of cross section of Silver wire Resistivity of Iron = 10 X 10⁻⁸ Ωm Resistivity of Silver = 16 x 10⁻⁸ Ωm So, We know that the Resistance of the wire is given by, So, Therefore* *the* *length* of *silver* wire** is 7.5cm

36.

There are two metallic wires of the same thickness made from iron and silver if the length or iron wire is 12 cm what should be the length of silver wire which is equal to the resistance of iron wire ?data: resistance of iron =10*10^-8

Answer»

$\bold{\huge{\underline{\underline{\rm{ Answer!:}}}}}$

Length=7.5 cm

$\bold{\huge{\underline{\underline{\rm{ Explanation! :}}}}}$

Length of the IRON wire = 12 cm

Resistance of Iron wire = Resistance of SILVER Wire

Also,

Area of cross section, A of Iron wire = Area of cross section of Silver wire

Resistivity of Iron = 10 X 10⁻⁸ Ωm

Resistivity of Silver = 16 x 10⁻⁸ Ωm

So,

We know that the Resistance of the wire is given by,

So,

Therefore the length of silver *wire*** is 7.5cm

Discussion

37.	X+124-y=-13those who answer fast will be marked brainlist
Answer» Step-by-step EXPLANATION: x-y=-13-124 x-y=-137

37.

X+124-y=-13those who answer fast will be marked brainlist

Answer»

Step-by-step EXPLANATION:

x-y=-13-124

x-y=-137

Discussion

38.	3. The reciprocal of – 5 is
Answer» ANSWER: The RECIPROCAL of - 5 is -15

38.

3. The reciprocal of – 5 is

Answer»

ANSWER:

The RECIPROCAL of - 5 is -15

Discussion

39.	(e) 44 km 172 m into meters
Answer» ANSWER: ) 44 KM 172 m into METERS

39.

(e) 44 km 172 m into meters

Answer»

ANSWER:

) 44 KM 172 m into METERS

Discussion

40.	A loaded truck travels 14 km in 25 minutes. If the speed remains the same, how far can it travel in 5 hours?
Answer» MARK me brainliest plsssss GIVEN that a loaded truck travels 14 km in 25 minutes. in 300 minutes, a loaded truck can travel 14300/25 km, i.e., 168 km. HENCE, that truck can travel 168 km in 5 hours. So distance covered in 5 HRS = 33.6 5 = 168 km.

Discussion

41.	Karam Purchased four varieties of paint at the rateof 0.10 litres per 3, 0.20 litres per 3, 0.30 litres perand 0.40 litre per 3. If he mixes all the four vari-eties of paints in the ratio of 1: 2: 3: 4 in the givenorder, then find the price (in /litre) at which Karamshould sell the mixture to make a profit of 10% onhis entire stock.
Answer» Step-by-step explanation: I don't know the answer PLEASE GIVE me some CLUE

41.

Karam Purchased four varieties of paint at the rateof 0.10 litres per 3, 0.20 litres per 3, 0.30 litres perand 0.40 litre per 3. If he mixes all the four vari-eties of paints in the ratio of 1: 2: 3: 4 in the givenorder, then find the price (in /litre) at which Karamshould sell the mixture to make a profit of 10% onhis entire stock.

Answer»

Step-by-step explanation:

I don't know the answer PLEASE GIVE me some CLUE

Discussion

42.	ODD multiple of number 6 under 100
Answer» Answer: 2,4,6,8,10,12,14 Step-by-step EXPLANATION: ANSWERS to the GYM

42.

ODD multiple of number 6 under 100

Answer»

Answer:

2,4,6,8,10,12,14

Step-by-step EXPLANATION:

ANSWERS to the GYM

Discussion

43.	PLZ ANSWER IT FASTI NEED IT ...
Answer» -42/98 = -42/98÷14/14 = -3/7

43.

PLZ ANSWER IT FASTI NEED IT ...

Answer»

-42/98

= -42/98÷14/14

= -3/7

Discussion

44.	Find the difference between the simple interest and compound interest2 years at 5% per annum, compound interest being reckoned annually.3. Find the compound interest on 3125 for 3 years if the rates of interest
Answer» Answer: If the RATE of interest PER annum is the same under both simple interest and compound interest then for 2 years, compound interest (CI) - simple interest (SI) = Simple interest for 1 year on “Simple interest for ONE year”. Step-by-step explanation: For , N=3years R=5 % We have S.I.= 100 PNR =Rs600 => 100 P×3×5 =600 =>P=Rs4,000 And on interest being compounded for 2 years, Amount=P(1+ 100 R ) N =4,000×(1+ 100 5 ) 3 =4,000×1.05 3 =Rs4,630.50 So, C.I.=A−P=Rs4,630.50=Rs4,000=Rs630

44.

Find the difference between the simple interest and compound interest2 years at 5% per annum, compound interest being reckoned annually.3. Find the compound interest on 3125 for 3 years if the rates of interest

Answer»

Answer:

If the RATE of interest PER annum is the same under both simple interest and compound interest then for 2 years, compound interest (CI) - simple interest (SI) = Simple interest for 1 year on “Simple interest for ONE year”.

Step-by-step explanation:

For ,

N=3years

R=5 %

We have S.I.=

100

PNR

=Rs600

=>

100

P×3×5

=600

=>P=Rs4,000

And on interest being compounded for 2 years, Amount=P(1+

100

R

)

N

=4,000×(1+

100

5

)

3

=4,000×1.05

3

=Rs4,630.50

So, C.I.=A−P=Rs4,630.50=Rs4,000=Rs630

Discussion

45.	The sum of two rational number is 13/5 one of them is -3/5 find the other
Answer» ANSWER: Step-by-step EXPLANATION: Answer is 16/5

45.

The sum of two rational number is 13/5 one of them is -3/5 find the other

Answer»

ANSWER:

Step-by-step EXPLANATION:

Answer is 16/5

Discussion

46.	Find the value of x3+y3+12xy+6y;when x+y -4
Answer» ANSWER:sorry Step-by-step EXPLANATION:

46.

Find the value of x3+y3+12xy+6y;when x+y -4

Answer»

ANSWER:sorry

Step-by-step EXPLANATION:

Discussion

47.	Find the square root of the Number 35
Answer» ANSWER: it is 5.999 PLS MARK as BRAINLIEST

47.

Find the square root of the Number 35

Answer»

ANSWER:

it is 5.999 PLS MARK as BRAINLIEST

Discussion

48.	(1/2)-3×(1/3)2)*-1)÷65
Answer» ANSWER: The answer of this QUESTION is 1.51538462

48.

(1/2)-3×(1/3)2)*-1)÷65

Answer»

ANSWER:

The answer of this QUESTION is 1.51538462

Discussion

49.	(-14)×102 using distributive property
Answer» Answer: -14×(100+2)= -14×100+(-14)×2 = -1400+(-28) = -1400-28 = -1428 a×(b+c)=a×b+a×c by distributive PROPERTY Step-by-step explanation: HOPE it helps u

49.

(-14)×102 using distributive property

Answer»

Answer:

-14×(100+2)= -14×100+(-14)×2

= -1400+(-28)

= -1400-28

= -1428

a×(b+c)=a×b+a×c

by distributive PROPERTY

Step-by-step explanation:

HOPE it helps u

Discussion

50.	If the success of getting corona virus vaccine is 1/3 in each trial.what is the probability that at least 5 trials are needed to get the first success
Answer» Answer: The push to make a coronavirus vaccine is moving at breakneck speed. This week, the first of a few DOZEN healthy volunteers in Seattle, Washington, received a vaccine in a phase I safety trial sponsored by the US government. Similar safety trials of other coronavirus vaccines will also begin soon. Even as these ‘first in human’ trials get going, key QUESTIONS about how our immune system fights off the virus — and how to safely trigger a similar immune response with a vaccine — remain unanswered. Answers might come soon from studies of infected people and animal models, but some researchers say that the lack of information should not keep EXPERTS from beginning safety trials in people. Others worry that if vaccine candidates released on an accelerated schedule turn out to be ineffective or, worse, unsafe, it could send researchers back to the drawing board and end up delaying the development and wide-scale roll-out of an effective vaccine. Vaccines help a person to generate an immune response against an infection without first being EXPOSED to the pathogen. Studies of other coronaviruses, such as the four that cause some common colds, lead most researchers to assume that people who have recovered from SARS-CoV-2 infection will be protected from reinfection for a period of time. But that assumption needs to be backed by evidence, says Michael Diamond, a viral immunologist at Washington University in St. Louis, Missouri. “We don’t know that much about immunity to this virus.” A preprint1 posted online on 14 March by a team based in China looked at two rhesus macaques (Macaca mulatta) that had recovered from SARS-CoV-2 infection, which caused them only mild illness. The monkeys did not seem to become re-infected when researchers exposed them to the virus for a second time four weeks after their initial exposure. Researchers will be looking for evidence that humans react in the same way, for instance by studying people potentially exposed multiple times, Diamond says. That’s another big unknown. Immunity is short-lived for the coronaviruses that cause common colds; even people who have high levels of antibodies against these viruses can still become infected, says Stanley Perlman, a coronavirologist at the University of Iowa in Iowa City. The evidence is more equivocal for the two other coronaviruses that have triggered epidemics: those that cause severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS). Perlman says his team has found that after people recover from MERS, their antibodies against the virus drop precipitously. He also says that his team has gathered data — not yet published — showing that SARS antibodies are still present in the body 15 years after infection. But it’s not clear whether this immune response is enough to prevent reinfection. “We don’t have good evidence of long-lasting immunity, but we also don’t have really good data from both SARS and MERS,” Perlman adds. What kind of immune response should vaccine developers look for? The phase I trial that began this week focuses on the safety of a vaccine developed by Moderna, a company based in Cambridge, Massachusetts. But researchers will also look closely at the nature of the immune response the vaccine summons. The Moderna vaccine consists of an RNA molecule. Like many of the other SARS-CoV-2 vaccines in development, it is designed to train the immune system to make antibodies that recognize and block the spike protein that the virus uses to enter human cells. “I think it’s reasonable as a first pass, but we will learn that, perhaps, antibody responses to the spike exclusively may not be the whole story,” says Diamond. A successful SARS-CoV-2 vaccine might need to prompt the body to generate antibodies that block other viral proteins, for instance, or make T cells that can recognize and kill infected cells. Normally, vaccines go into human trials after tests for safety and effectiveness in animals. But the Moderna vaccine and another being developed by Inovio Pharmaceuticals in PLYMOUTH Meeting, Pennsylvania, are being tested in animals at the same time as human phase I trials are happening. Inovio plans to begin its first human trial in April.

50.

If the success of getting corona virus vaccine is 1/3 in each trial.what is the probability that at least 5 trials are needed to get the first success

Answer»

Answer:

The push to make a coronavirus vaccine is moving at breakneck speed. This week, the first of a few DOZEN healthy volunteers in Seattle, Washington, received a vaccine in a phase I safety trial sponsored by the US government. Similar safety trials of other coronavirus vaccines will also begin soon.

Even as these ‘first in human’ trials get going, key QUESTIONS about how our immune system fights off the virus — and how to safely trigger a similar immune response with a vaccine — remain unanswered. Answers might come soon from studies of infected people and animal models, but some researchers say that the lack of information should not keep EXPERTS from beginning safety trials in people. Others worry that if vaccine candidates released on an accelerated schedule turn out to be ineffective or, worse, unsafe, it could send researchers back to the drawing board and end up delaying the development and wide-scale roll-out of an effective vaccine.

Vaccines help a person to generate an immune response against an infection without first being EXPOSED to the pathogen. Studies of other coronaviruses, such as the four that cause some common colds, lead most researchers to assume that people who have recovered from SARS-CoV-2 infection will be protected from reinfection for a period of time. But that assumption needs to be backed by evidence, says Michael Diamond, a viral immunologist at Washington University in St. Louis, Missouri. “We don’t know that much about immunity to this virus.”

A preprint1 posted online on 14 March by a team based in China looked at two rhesus macaques (Macaca mulatta) that had recovered from SARS-CoV-2 infection, which caused them only mild illness. The monkeys did not seem to become re-infected when researchers exposed them to the virus for a second time four weeks after their initial exposure. Researchers will be looking for evidence that humans react in the same way, for instance by studying people potentially exposed multiple times, Diamond says.

That’s another big unknown. Immunity is short-lived for the coronaviruses that cause common colds; even people who have high levels of antibodies against these viruses can still become infected, says Stanley Perlman, a coronavirologist at the University of Iowa in Iowa City.

The evidence is more equivocal for the two other coronaviruses that have triggered epidemics: those that cause severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS). Perlman says his team has found that after people recover from MERS, their antibodies against the virus drop precipitously. He also says that his team has gathered data — not yet published — showing that SARS antibodies are still present in the body 15 years after infection. But it’s not clear whether this immune response is enough to prevent reinfection. “We don’t have good evidence of long-lasting immunity, but we also don’t have really good data from both SARS and MERS,” Perlman adds.

What kind of immune response should vaccine developers look for?

The phase I trial that began this week focuses on the safety of a vaccine developed by Moderna, a company based in Cambridge, Massachusetts. But researchers will also look closely at the nature of the immune response the vaccine summons.

The Moderna vaccine consists of an RNA molecule. Like many of the other SARS-CoV-2 vaccines in development, it is designed to train the immune system to make antibodies that recognize and block the spike protein that the virus uses to enter human cells.

“I think it’s reasonable as a first pass, but we will learn that, perhaps, antibody responses to the spike exclusively may not be the whole story,” says Diamond. A successful SARS-CoV-2 vaccine might need to prompt the body to generate antibodies that block other viral proteins, for instance, or make T cells that can recognize and kill infected cells.

Normally, vaccines go into human trials after tests for safety and effectiveness in animals. But the Moderna vaccine and another being developed by Inovio Pharmaceuticals in PLYMOUTH Meeting, Pennsylvania, are being tested in animals at the same time as human phase I trials are happening. Inovio plans to begin its first human trial in April.

Discussion

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