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The 7th term of an AP is _4 and its 13th term is_ 16 find AP

Posted by Harsharn Kaur Sandhu 6 years, 10 months ago

1 answers

Aqsa Irfan 6 years, 10 months ago

a7=4 a+6d=4.........[1] a13=16 a+12d=16......[2] [2]-[1] 6d=12 d=12/6 d=2 Substituting d=2 in [1] a+6d=4 a+12=4 a=-8 Therefore,AP= -8,-6,-4,-2,0,2,4,6,8,10,12,14,16,.....

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Is (a-b) the whole square and (b-a) the whole square same

Posted by Suhail Siyad 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Bjj Ghh 6 years, 10 months ago

Yes they are same (a - b)2 = a2+ b2 -2ab And, (b - a)2 =b2 + a2 - 2ab Thereforethey are the same . I hope that you have understood this. Ok

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Khushi Agrawal 6 years, 10 months ago

Absolutely same As (a-b)²=a²+b²-2ab And(b-a)²=b²+a²-2ba

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Find the ratio in which X-axis divides the line segment joining the points (6,4)and (1,-7).

Posted by Saksham Kaushik 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Solve the pair of linear equation for X and Y bracket a minus b bracket X + bracket a + b bracket close Y is equal to a square minus 2 a b minus b square bracket a + b bracket close + bracket X + Y bracket close is equal to a square + b square

Posted by Megh Raj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

L,b are the zeroes of quadratic poly. x2--(k+6) x + 2(2k--1) . Find the value of k if l+b1/2lb

Posted by Vipin Sharma 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Converse of Pythagoras therom ki statement bata do

Posted by Anjali Kori 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Anjali Kori 6 years, 10 months ago

Are you honey.if yes then thanks

1Thank You

??? ??? 6 years, 10 months ago

When the sum of square of two sides of a triangle is equal to square of the thitd side then prrove that the angle opposite to the 3rd side is a right angle.

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CosecA-SinA = m3, SecA-CosA = n3 Then prove that m4n2+m2n4=1

Posted by Aakash Verma 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

In a circle of radius 21 CM an Arc subtends an angle of 60 degree at the centre find the length of the

Posted by Adarsh Mishra 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Shubham Mishra 6 years, 10 months ago

length of the arc is 22 cm length of arc = thita /360 •2πr

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If the sum of first p terms of an AP is same as sum of first q terms (p not equal q)then show sum of its first (p+q)terms is zero.

Posted by Sona Jacob Jacob 6 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Explain how to prove trignometry ratios

Posted by Kirutheesvar Saravanan 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Pinki Kumari 6 years, 10 months ago

Given in ncert

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PQRS is a diameter of a circle of radius 6 cm. The length PQ,QR,RS are equal.semi circle are drawn on PQ and QS as diameter . Find the area of shaded region

Posted by Shivam Gautam 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Geetanand Yadav 6 years, 10 months ago

Which is shaded region

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explain BPT ( basic proportionality theorm)

Posted by Deepali Rana 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Shubham Mishra 6 years, 10 months ago

In a triangle if the points on two sides are parallel to third side than the ratio of the corresponding sides are equal

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Puja Sahoo ? 6 years, 10 months ago

Check it in yur book.........

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Geetanand Yadav 6 years, 10 months ago

The ratio of proportional side of the similar triangle are equal.

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ANSWER

How l should study the trigonometry chapter . I just don't know any thing in trigonometry chapter

Posted by Mansi ??⚘?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Gautam Prajapati 6 years, 10 months ago

Your most welcome... ??

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Mansi ??⚘?? 6 years, 10 months ago

Any other suggestions from other friends

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Geetanand Yadav 6 years, 10 months ago

Just learn every formula then you can solve everything. Mostly in prove questions change other terms such as CosecA to sinA or cosA

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Gautam Prajapati 6 years, 10 months ago

Learn all the formula of that chapter........... And do practice 3to4 times....

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Houses in a row are numbered from 1 to 49. Find a number 'x' such that the sum of the number of houses preceding 'x' is equal to sum of the number of houses following 'x'

Posted by Tanisha Das 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Aqsa Irfan 6 years, 10 months ago

It is an optional question from AP.....

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Geetanand Yadav 6 years, 10 months ago

I think it's given in NCERT.its solution is given in app

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Is 0.101100101010 an irrational number? Justify your answer

Posted by Mansi ??⚘?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Pinki Kumari 6 years, 10 months ago

How?? Geetanand

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Shabana Y 6 years, 10 months ago

No it's rational number because it's terminating

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Geetanand Yadav 6 years, 10 months ago

Do this as you do in proving√2 a irrational number

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If 4/5 ,a and 2 are three consecutive terms of an A.P, then find the value of a

Posted by Mansi ??⚘?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Bjj Ghh 6 years, 10 months ago

D = a - 4/5 =2- a D = a+a = 2+4/5 D = 2a = 10+4/5 D = 2a = 14/5 D = a = 14/10 Therefore the answer is @4/10

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Puja Sahoo ? 6 years, 10 months ago

a=7/5....

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Geetanand Yadav 6 years, 10 months ago

A=7/5

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Rajan Tomar 6 years, 10 months ago

a = 14/10

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In a right angle triangle ABC which is right angled at A. AB =h ,AC = 25 cm and angle C is 60° find h

Posted by Mansi ??⚘?? 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Aakash Verma 6 years, 10 months ago

H=25√3

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Rakesh Jha 6 years, 10 months ago

h=25√3 cm

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Rajan Tomar 6 years, 10 months ago

h = 25×under root 3

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Geetanand Yadav 6 years, 10 months ago

h=25√3cm. And hypotenuse=50cm

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ANSWER

Using euclid division algorithm find whether the pair of numbers 847,2160 are co primes or not.

Posted by Alfiya Shajahan 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 6 years, 10 months ago

Q. Using euclid division algorithm find whether the pair of numbers 847,2160 are co primes or not.

Answer:

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In a figure apb and aqp are semicircle and ao =ob if perimeter of figure is47 find area of shaded part

Posted by Gaurav Chilkoti 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Gaurav Seth 6 years, 10 months ago

Let 'r' be the radius of given circle

perimeter of given figure = 47 cm

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Gaurav Seth 6 years, 10 months ago

Let 'r' be the radius of given circle

perimeter of given figure = 47 cm

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What is euclid division algorithm

Posted by Riya Bajaj 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Shabana Y 6 years, 10 months ago

Given two positive integers a and b, there exist whole numbers q and r satisfying a=bq+r where r more than or equal to 0 less than b

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Anshu Rai ? 6 years, 10 months ago

a=bq+r Where 0 greater than equal to r<b

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A cubical block of side 10 centimetre is surmounted by a hemisphere. what is the largest diameter that hemisphere can have? find the cost of painting the total surface area of the solid so formed, at the rate of Rs 5 per 100 square CM [ use π = 3.14]

Posted by Sneha Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

4 answers

Sneha Singh 6 years, 10 months ago

Thanks

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Geetanand Yadav 6 years, 10 months ago

Cubical block ke upar hemisphere Bana huva hai. Same question is given in example of this chapter in NCERT book see there.

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Sneha Singh 6 years, 10 months ago

Can u explain in detail

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Rajan Tomar 6 years, 10 months ago

Largest diameter=10cm Cost of painting = Rs .32.85

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The probability of selecting a red ball at random from a jar that contains only red, blue and orange ball is 1/4. the probability of selecting a blue ball at random from the same jar is 1/3. If the jar contains 10 Orange balls, find the total number of balls in the jar.

Posted by Sneha Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Rajan Tomar 6 years, 10 months ago

Total balls = 24

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Anshu Rai ? 6 years, 10 months ago

let the total no. of balls be x. P(E) of red balls = 1/4 Total red balls =x/4 P(E) of blue balls =1/3 Total red balls = x/3 Total balls =x x/3+x/4+10=x 3x+4x+120/12=x 7x +120=12x 120=12x-7x 120/5=x x=24

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A hemispherical bowl of internal diameter 36 CM contains liquid. This liquid is filled into 72 cylindrical bottles of diameter 6 CM. Find the height of each bottle, if 10% liquid is wasted in this transfer.

Posted by Sneha Singh 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Sneha Singh 6 years, 10 months ago

Please explain it

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Anshu Rai ? 6 years, 10 months ago

H=0.6

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Find the 11th tern of an AP -5, -5/2, 0, 5/2,......

Posted by Anisz Bodo 6 years, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Rajan Tomar 6 years, 10 months ago

11th term = 20

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Geetanand Yadav 6 years, 10 months ago

Find difference by subtracting first term from second term .then d=5/2,a=-5 and n=11.so An=a+(n-1)d.put the value=An=-5+(11-1)*5/2,then An=-5+(10*5/2), then An=-5+25=20ans....

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Aditya V Jaiswal 6 years, 10 months ago

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Anisz Bodo 6 years, 10 months ago

Can u explain??

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Geetanand Yadav 6 years, 10 months ago

20is the answer

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Find the mean of the following data mark: 0 or above 80, 10 or above 77

Posted by Srinivasan K.P 6 years, 10 months ago