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how many three of digit natural numbers are divisible by 7

Posted by Krishnpal Yadav 4 years, 10 months ago

2 answers

Rohan Kumar 4 years, 10 months ago

105, 112, 119, ..., 994 This is an AP with first term (a) = 105 and common difference (d) = 7 Let an be the last term. an = a + (n - 1)d 994 = 105 + (n - 1)(7) 7(n - 1) = 889 n - 1 = 127 n = 128 Thus, there are 128 three-digit natural numbers that are divisible by

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Yogita Ingle 4 years, 10 months ago

Three digit numbers divisible by 7 are

<div>

105, 112, 119, ..., 994

This is an AP with first term (a) = 105 and common difference (d) = 7

Let an be the last term.

an = a + (n - 1)d

994 = 105 + (n - 1)(7)

7(n - 1) = 889

n - 1 = 127

n = 128

Thus, there are 128 three-digit natural numbers that are divisible by 7.

</div>

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The length of a tangent from a point A at distance 5cm from the centre of the circle is 4 cm. Find the radius of the circle.

Posted by Vartika Pandey 4 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Gautam Sinha 4 years, 10 months ago

25²= 4²+ OB² slove karo

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Gautam Sinha 4 years, 10 months ago

Ans =3cm

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Vartika Pandey 4 years, 10 months ago

Please give me the answer

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what is the hcf of 29700 and 30240

Posted by Vedant Ahuja 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

Factors the number,

LCM is the least common multiple,

Therefore, LCM of 30240 and 29700 using prime factorisation method is 1663200.

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Find the ratio in which P(4,m) divides the line segment joining the points A(2,3) and B(6,-3). Hence find m.

Posted by Akash Adhikary 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

Let
P(4, m) = (x, y)
A(2, 3) = (x1, y1)
B(6, -3) = (x2, y2)
By using section formula in this points, we get.
Let the ratio in which P divide the line segment A and B be = k:1
Therefore,
x = kx₂ + x₁(1)/k + 1
=> 4 = 6k + 2 /k + 1
=> 4k + 4 = 6k + 2
=> 2k = 2
=.> k = 1
So, the ratio = 1:1
Now,
y = k(y₂) + 1(y₁) / k + 1
=> m = -3 + 3 /1 + 1
=> m = 0/2
=> m = 0.

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from a point Q,the length of the tangent to a circle is 24 cm, the distance of Q from the centre is 25 cm. the radius of the circle is

Posted by Meghana Narisetty 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gautam Sinha 4 years, 10 months ago

25²= 24²+OB slove karo

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Please please please answer it Class 10 maths ex 12.2 q4

Posted by Shital Kafley 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the formula used to find the zeros or roots of a quadratic polynomial

Posted by Akash K 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

King Adithya H M... 4 years, 10 months ago

*Given a function of the form f(x)=ax2+bx+c, one can find the zeroes of the function (that is, where f(x)=0) by using the quadratic formula: x=−b±√b2−4ac2a. If the discriminant b2−4ac is less than zero, these roots will be complex or imaginary, and if the discriminant is greater than or equal to 0. these roots will be real. The use of ± informs us that there are two solutions here; one where we are subtracting √b2−4ac, and one where we are adding it.* For a step by step example, assume the function f(x)=x2−7x+10. Here a=1,b=−7,c=10. If we set f(x)=0, then the values of x for which f(x)=0, that is to say the roots of f(x), would be determined by the quadratic formula: x=−(−7)±√(−7)2−4(1)(10)2(1)=7±√49−402=7±√92=7±32. Thus, our roots will be at x=7+32 and x=7−32 or x=5 and x=2. On the graph of the function, we would see that the parabola crosses the x-axis at x=2 and x=5.

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Kanishka Singh 4 years, 10 months ago

First split the middle term and get factors of the given polynomial. Next to it put the factors equal to the value of zero. Then you will get the zeroes of the polynomial. You can also verify your answer using verification method.

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If the mode and mean are 28 and 27 then respectively find the median

Posted by Ishika Tanwar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 4 years, 10 months ago

Mode= 3 Median - 2 mean

=> 28 = 3 median - 2*27

=> 16= 3 median - 54

=> 3 median= 70

=> median= 70/3= 23.33

so, Median of distribution is 23.33

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in figure abcd is a trapezium in which ab parallel ef parallel dc. the length of ae

Posted by D Devika 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

What is the symbol used to denote irrational numbers

Posted by Akash K 4 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Anand Nishad 4 years, 10 months ago

Hello

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Itachi Uchiha ? 4 years, 10 months ago

The symbol used to denote irrational number is Q

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Itachi Uchiha ? 4 years, 10 months ago

Hii Sandhya..........

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mm high passes vertically above another plane at an instant when the angle of elevation of two aeroplane from the same point on the ground are 60 degree and 45 degree respectively find the vertical distance between the two plane

Posted by Komal Rathour 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Maths ma unit 6 of class 10 ma exersice 6.3 board ma ayagee

Posted by Sahil ??? Paliwal 4 years, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Igl Praveen 4 years, 10 months ago

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Parth Kabra 4 years, 10 months ago

Nahi

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Jagrati Sharma?? 4 years, 10 months ago

Yes...

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Mamta ... 4 years, 10 months ago

hanji ayegee

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Sumesh ☺️☺️☺️ 4 years, 10 months ago

Yes

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Write the place of 7and 8 in 67,85,325. Also,find the difference of both place value.

Posted by Bimla Dahiya 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

King Adithya H M... 4 years, 10 months ago

The place of 7 is 1,00,000 I.e., 6@,85,325 & place of 8 is 10,000 I.e., 67,@5,325. The difference is: 1,00,000-10,000=90,000.

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Paru ? 4 years, 10 months ago

The place of 7 is 1,00,000 I.e., 6@,85,325 & place of 8 is 10,000 I.e., 67,@5,325. The difference is: 1,00,000-10,000=90,000. Hope this is your answer ?.

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Ans.Given:Alinesegmentoflength7.6cm. Toconstruct:Todivideitintheratio5:8andtomeasurethetwoparts. Stepsofconstruction: (a)FromapointA,drawanyrayAX,makinganacuteanglewithAB. (b)Locate13(=5+8)pointson AXsuchthat (c)Join. (d)Throughthepoint,drawalineparalleltointersectingABatthepointC. Then,AC:CB=5:8 Onmeasurementweget,AC=3.1cmandCB=4.5cm

Posted by Rishabh Pawar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Jagrati Sharma?? 4 years, 10 months ago

You are right paru...

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Paru ? 4 years, 10 months ago

Hey Rishabh Type your answer in answer option. Don't type it in question option. If you don't know where to type your answer then see, first you have to press 'answer' option (you will get it below in every questions). Then you will get 'type your answer' option (that too you will get below). Then type your answer & send it. Hope you got it ?.

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Solution : Given a triangle ABC, we are required to construct another triangle whosesides are 34 of the corresponding sides of the triangle ABC.Steps of Construction :1.Draw any ray BX making an acute anglewith BC on the side opposite to the vertexA.2.Locate 4 (the greater of 3 and 4 in 34)points B1, B2, B3 and B4 on BX so thatBB1 = B1B2 = B2B3 = B3B4.3.Join B4C and draw a line through B3 (the3rd point, 3 being smaller of 3 and 4 in34) parallel to B4C to intersect BC at C¢.4.Draw a line through C¢ parallelto the line CA to intersect BA at A¢(see Fig. 11.3).Then, D A¢BC¢ is the required triangle.Let us now see how this construction gives the required triangle.By Construction 11.1, BC3CC1¢=×¢Therefore, BCBC+CCCC1411BCBCBC33¢¢¢==+=+=¢¢¢, i.e.,BCBC¢ = 34.Also C¢A¢ is parallel to CA. Therefore, D A¢BC¢ ~ D ABC.(Why ?)So,ABACBC3ABACBC4¢¢¢¢===×

Posted by Rishabh Pawar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Solution : We havex2 + 7x + 10 = (x + 2)(x + 5)So, the value of x2 + 7x + 10 is zero when x + 2 = 0 or x + 5 = 0, i.e., when x = – 2 orx = –5. Therefore, the zeroes of x2 + 7x + 10 are – 2 and – 5. Now,sum of zeroes =2(7)–(Coefficientof),–2(–5)–(7)1Coefficientofxx-+===product of zeroes =210Constantterm(2)(5)101Coefficientofx

Posted by Rishabh Pawar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

(x+a)(x+b)=?

Posted by Rishabh Pawar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Nishant Bhati 4 years, 10 months ago

X²+(a+b)-2ab

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Paru ? 4 years, 10 months ago

(X+a)(X+b)=X^2+(a+b)X+(ab)

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A brooch is made with silver in the form of circle with dia

Posted by Ranjeet Kumar 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

8*14/7*2)/(18/6*3)

Posted by Tuba Tahseen 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Sumant Kumar 4 years, 10 months ago

8×14/7×2)/(18/6×3)=8×2×2)/(3×3)=32/9=14/3

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2tan30/1-tan²30

Posted by Vinod Sah 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Gautam Sinha 4 years, 10 months ago

2×1/√3/1-(1/√3) ² solve krna ok

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Gautam Sinha 4 years, 10 months ago

Ans √3

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please guys help me in my revision of ch 8 and 10 of maths

Posted by Shubham Rai 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Itachi Uchiha ? 4 years, 10 months ago

If u have already completed ur NCERT BOOK...and u want revise any chapter then firstly solve all the example, exercise questions , and solve sample paper, previous year paper of that chapter after this I hope u are ready for testing these chapter.....

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anyone is here who can revise me ch 8 and 10 of maths?

Posted by Shubham Rai 4 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Aditya Raj 4 years, 10 months ago

Yes I am revise

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Mr;:; Sonu Kumar 4 years, 10 months ago

yes i

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Exercise 4.1 question 2

Posted by Divya Divya 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Divya Divya 4 years, 10 months ago

Exercise 4.1 question 4

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What number should be added to -4/7 to get 5/9?

Posted by Mikail Shaikh 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Xyz Student 4 years, 10 months ago

Solution: Let number be added is x -4/7 + x = 5/9 x= 5/9 + 4/7 = (35+36) upon 63 i.e. = 35+36/63 =71/63 Hence, required number is 71/63

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Guys what does statement and simple problems on division algorithm for polynomials with real coefficient mean Pls amswer

Posted by Aaron E 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

https://t.me/Biology

Posted by Dinesh Singh 4 years, 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

How many chapters of yours are left to complete guys??? Mine: Che - 1 ch remaining? Maths-8 ch remaining? Computer- I have not even touched the book. ??

Posted by Akhya Sahay 4 years, 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Aaron E 4 years, 10 months ago

Don't worry you can start from next year ?

4Thank You

Sahil Kumar 4 years, 10 months ago

Abhi tak Sanskrit Aur english kee second book bhi nhi dekhi ,

2Thank You

Itachi Uchiha ? 4 years, 10 months ago

Mene to abhi start hi ni kiya??????

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A man walks a certain distance with certain speed. If he walks 1/2 km an hour faster, he takes 1 hour less. But, if he walks 1 km an hour slower, he takes 3 more hours. Find the distance covered by the man and his original rate of walking.

Posted by Ysys Gssgg 4 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Gaurav Seth 4 years, 10 months ago

Let the original speed y km/ hr and total time taken be x h

Distance = xy

[ Distance = time × speed]

(y + ½) (x - 1) = xy

xy - y + x/2 - ½ = xy

x/2 - y = ½ ………………(1)

[Distance covered in each case is same]

(y -1) (x + 3) = xy

xy + 3y -x -3 = xy

-x + 3y = 3……………..(2)

Multiply equation 1 by 3 ,

3x/2 - 3y = 3/2…………(3)

On adding eq 2 and 3,

-x + 3y = 3

3x/2 - 3y = 3/2

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

-x +3x/2 = 3/2 +3

(-2x + 3x)/2 = (3+6)/2

x/2 = 9/2

x = 9

On Putting x = 9 in eq 2

-x + 3y = 3

-9 + 3y = 3

3y = 3 +9

3y = 12

y = 12/3

y = 4

Distance covered by man = xy = 9 × 4 = 36 km

Original speed of walking = y = 4 km/h

Hence, the Distance covered by man is 36 km & Original speed of walking is 4 km/h.

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ANSWER

Mai abhi 2+2=5 hota h prove kr deti hu .......bcz mujhe us time koi argent kaam h let's starting..

Posted by Itachi Uchiha ? 4 years, 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Itachi Uchiha ? 4 years, 10 months ago

No I waste my time to this question from 2 days .. ????

2Thank You

Itachi Uchiha ? 4 years, 10 months ago

??✌️????✌️?????????

1Thank You

Itachi Uchiha ? 4 years, 10 months ago

Btaiye ki kahan rule break hua h or mera tarika pasand aaya ho to thnks ka button jaroor press Krna....

1Thank You

Ayush Kumar 4 years, 10 months ago

I know how you solved it, you have solved it by mistake

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Itachi Uchiha ? 4 years, 10 months ago

0=0 (as we all know).. If write it as 20-20 =25-25 (I didn't see any problem in this statement) Then, If we write 20-20 as (4×5)-(4×5) there is no problem.... similarly we write 25-25 as (5×5)-(5×5). ....then if we take 4 in L.H.S as a common digit. And take 5-5 in bracket..... similarly we take 5 in R.H.S as a common digit...and take 5-5 in bracket.... And in both the sides L.H.S AND R.H.S. we have to see that (5-5) in common then we cut it .. Now we have to see 4=5and we also write it as 2+2=5. ?????????????????? MENE KR DIYA JAISA MENE KAHA THA KI MENE RULE TODA H MATHS KA TO PLZZ BTAYIA KO MENE RULE KAHAM TODA H IS PURE QUESTION MEI ...??☺️?? ???????MENE KR DIYA ????

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Express sec theta in terms of cos theta

Posted by Suhani Sanjay 4 years, 10 months ago

CBSE > Class 10 > Mathematics