CBSE > Class 10 > Mathematics | CBSE Board | Homework Help

LCM(280,x)=14HCF(280,x)------1 LCM+HCF=600 LCM=600-HCF--------2 From 1 and 2 600-HCF=14HCF 600=15HCF HCF=40 LCM=14×40 LCM=560 Now, LCM×HCF=280×x 560×40=280x x=80 Hope this helps

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Ahana Khanna 10 months, 3 weeks ago

600-280=320 So the other no. Is 320

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Joban Preet 10 months, 3 weeks ago

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9x²=324 + x²

Posted by Rohit Kharwar 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Pratiksha Limbu 10 months, 3 weeks ago

4.5

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If Sin + cos = 2 , find sin^8 + cos^8

Posted by Pratyaksh Jain 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Aneek Bera 10 months, 3 weeks ago

Squaring both side we get sin²+cos²+2sincos=4 Sincos=3/2 A.T.C (Sin⁴+cos⁴)²-2sin⁴cos⁴ =[(sin²+cos²)²-2sin²cos²]²-3⁴ =(1-9)²-81 =64-81 =-17

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In the given figure XZ II BC. AZ = 3 cm. BM = 3cm . ZC = 2 cm. and MC = 5cm. Find the length of XY

Posted by Ankita Jetly 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Ashish Gupta 10 months, 4 weeks ago

Where is the figure 😂

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ANSWER

if sinA+cosA=√3 then Find the value of SinA.CosA

Posted by Ashish Gupta 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

2 answers

Rupshree Singh 10 months, 4 weeks ago

By squaring both side SinA.CosA=1

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Ishika Chouhan 10 months, 4 weeks ago

Square both side (SinA cosA)²= (√3)² Sin²A + cos²A + 2sinA.cosA = 3 We know that - Sin²A + Cos²A =1 So, 1+ 2sinA.cosA =3 2sinA.cosA = 3-1 2sinA.cosA =2 SinA.CosA = 2/2 SinA.CosA=1

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Two roads are intersecting at right angles.taking road A as X axis road B as y axis and point of intersection o as origin.ramesh and Rajasthan house are located at points p(1,3) and q(4,2) respectively. A)find the distance of Ramesh s house from origin B)find the distance between Ramesh and raj s house

Posted by Harini R 1 week ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Two AP have same common difference the first term of the one of these is -1 and the other is -8 find common difference of 4th term .

Posted by Alfiya💫💫💫 . 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

5 answers

Rupshree Singh 10 months, 4 weeks ago

ap4= 7+ 3 d ap4=-1+3d In apz ap4-ap4= ay-a+3d ay-8+3d -1+3d-(-8-3d) -1+34+8-30 = 7

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Avani Cho 10 months, 4 weeks ago

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Ashish Gupta 10 months, 4 weeks ago

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Yash Singh 10 months, 4 weeks ago

7 is correct answer

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Yash Singh 10 months, 4 weeks ago

2 ans

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The angle of elevation of a cloud from a point 60 m above a lake is 30 degree and the angle of depression of the reflection of the cloud in the lake is 60 degree find the height of the cloud

Posted by Rajeev Ranjan 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

3 answers

Rajeev Ranjan 10 months, 4 weeks ago

120

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Ashish Gupta 10 months, 4 weeks ago

120

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Saijyoti Ghose 10 months, 4 weeks ago

15 cm

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ANSWER

Find x if y is 12

Posted by Ak Vijeesh Vijeesh 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Ak Vijeesh Vijeesh 10 months, 4 weeks ago

X-y-y =9

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A number X is selected from the numbers 1,2,3 and then a second numberY is randomly selected from the numbers 1,4,9. What is the probability that the product xy of the two number will be less than 9?

Posted by Rajeev Ranjan 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

1 answers

Ashish Gupta 10 months, 4 weeks ago

5/9

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A shopkeeper byus a number of books for Rs 1200. If he had bought 10 more book for same amount each book would have cost him Rs 20 less. Find how many books did he buy

Posted by Akshit Rawat 10 months, 4 weeks ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

3x/2-5y/3=-2 , x/3+y/2 =13/6 substitution method

Posted by Dharshidha Dharshi 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Student Pro 11 months ago

3x/2-5y/3=-2----1 x/3+y/2=13/6---2 take the Icm of 6 in 1 and2 therefore, 9x-10y=-12----3 from this x=-12+10y/9---5 and 2x+3y=13-----4 putting 5 in 4 therefore, y=3 and from 5 x=2 {byputting thevalue of y in it}

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Etrain travel 360 km at uniform speed if the speed had been 5 km per hour it would have time taken 1 hour less than find the speed of train

Posted by Ram Yadav 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Pratham Maurya 11 months ago

Given distance=360 km. Let the speed of the train be x km/hr. Speed when increased by 5 km/hr =(x+5) km/hr 360x−360(x+5)=1 [360x+1800−360x]x(x+5)=1 x2+5x−1800=0 x2+45x−40x−1800=0 x(x+45)−40(x+45)=0 (x−40)(x+45)=0 x=40,−45 The speed of the train is 40 km/hr.

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3sin30` + 4cos²45` - cot²30`/cos²30` + sin²60`

Posted by Ritika Singh 11 months ago

CBSE > Class 10 > Mathematics

1 answers

Student Pro 11 months ago

3sin30=1/2*3=3/2 4cos^2 45=4(1/2)^2=4*1/2=4/2 cot^2 30=√3^2=3 cos^2 30 = √3/2^2=3/4 Sin2 60^= (√3/2)2=3/4 3(1/2)+4/2-3/3/4+3/4 [ by cutting 3 by 3cand 4by 4] 3/2+4/2-3[ now take the lcm of -3 multiply it by 2] = 3+4-6/2=7-6/2= 1/2 ans is 1/2

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If the product of zeroes of the polynomial ax2-6x-6 is 4. find the value of a.hence find the sum of its zeroes

Posted by Vignesh M 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Student Pro 11 months ago

Product of zeroes=c/a__1 So compare ax^2-6x-6with ax^2+bx+c=0 a=a,b=-6,c=-6 So c/a=-6/a=4[ given ] =-6=4a =-6/4= a =-3/2=a Ans

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Neha Singh 11 months ago

A=30/16

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Suman is celebrating his birthday

Posted by Chandan Kumar 10 months, 3 weeks ago

CBSE > Class 10 > Mathematics

2 answers

Kanchan Yadàv 10 months, 3 weeks ago

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Sanskrati Singh Parmar 11 months ago

Suman is celebrating her birthday

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The length of the minute hand of a clock is 5cm. Find the area swept by the minute hand during the time period 6:05 am and 6:40 am.

Posted by Mansiii Kaushik 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Rupshree Singh 11 months ago

Length of minute hand = 5cm = 8 Time period = 6:05 am to 6:40 am. = 35 minutes 1 min = 6° 35min = 35x6 = 210°= Ө Area of the sector = θ/360 ×πr² 210/360×22/7×5×5 = 275/6 cm².

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Soham Tanksale 11 months ago

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Compartment exam 2023 maths question paper

Posted by Sunita Devi 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Find the sum of all natural numbers between 200 and 1502which are exactly divisible by 3 .

Posted by Mohammad Shakib 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Ashish Gupta 10 months, 4 weeks ago

369117

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Official Praffulbhai 11 months ago

369117

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ANSWER

14.2

Posted by Kaunen Ansari 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Sankalp Dinesh 11 months ago

Means???

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Kaunen Ansari 11 months ago

1 answer

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( x, y ) is 5 unit away from the origin. How may such point lie in the third quadrant?

Posted by Aryan Kumar 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Avani Cho 10 months, 4 weeks ago

X2+y2=25

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Dasarath Badanayak 11 months ago

Infinite

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The 11th term from the end of the AP, 10, 7, 4, .........., - 62 is

Posted by Aryan Kumar 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Ashish Gupta 10 months, 4 weeks ago

-20

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Namrata Babani 11 months ago

-62-(11-1)-3 -62-10*-3 -62+30 -32

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It is necessary to turn the data from inclusive to exclusive to find the mean of that data ? Why ?

Posted by Suryesh Kumar 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

It is necessary to turn the data from inclusive to exclusive? Why ?

Posted by Suryesh Kumar 11 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

If the sum of two number is 1215 and their HCF is 81 then the possible number of pair of such number is

Posted by Praveen Prajapati 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Aryan Kumar 11 months ago

405/37

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Dipti Singh 11 months ago

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Amardeep Parija 11 months ago

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Prove sinA- 2sin³A/2cos³A- cosA. = TanA

Posted by Abdullah Khan 11 months ago

CBSE > Class 10 > Mathematics

3 answers

Khushi Maan 11 months ago

Isme upar to sinA common lena hoga or niche cosA lena h ,, then upar ya niche ek jagah pr sin²A + cos²A = 1. Ye identity put Krna h ....

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S Manikandan 11 months ago

Give me answer

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S Manikandan 11 months ago

Write a rational number between root 2 and root 3

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Find the number whose sum is 27 and product is 182.

Posted by Passang Tamang 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Praveen Prajapati 11 months ago

According to question First eq........ Is X+Y =27 And Second eq... Is XY=182 Then you solve eq by factorisation is Value X and Y is 13,14 or 14,13 Your question is solved

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Khushi Maan 11 months ago

10x + y = 27 and 10xy = 182

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