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A train covers a distance of 480 km at a uniform speed..if d speed had been 8km/ h less, thn it would have taken 3 hrs to cover the same..find original speed

Posted by Tara Bai 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Tara Bai 10 months ago

Thank u...but can u show the steps to solve dis

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Lovejeet Kaur 10 months ago

Hence, the usual speed of the train is 40 km/h. Q. A train covers a distance of 480 km at a uniform speed. If speed had been 8km /hr less then it would have taken 3 hours more to cover the same distance.

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Two stations due south of a leaning tower are located at the distance of a and b from the foot of a leaning tower that leaves in the direction of the north if alpha and beta are the elevations of top of the tower from that from the stations show that inclination theta to the horizontal is given by cot theta is equal to b cot alpha - a cot beta / b - a

Posted by Nikitha Mythreye 10 months ago

CBSE > Class 10 > Mathematics

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In a circle of diameter 42 CM if an Arc substance and angle of 60 degree at the centre what will be the perimeter of 1 + slice of pizza in centimetre

Posted by Afrin Nisha 10 months ago

CBSE > Class 10 > Mathematics

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In triangle ABC, D and E are points on AB and AC respectively, such that DE parallel BC. IF AD = 2.4cm, AE = 3.2cm, DE = 2cm and BC = 5cm, find BD and CE.

Posted by Palak Siwach 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Vishal Dubay 9 months, 2 weeks ago

BD 3.6 and CE 4.8

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Avneet Kaur 9 months, 4 weeks ago

BD = 3.6 and CE = 4.8

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Tushar S 9 months, 4 weeks ago

6.0 and 8.0

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If AD = 5.6 cm , AC= 6 cm, BD= 3.2 cm, Find AC

Posted by Palak Siwach 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Palak Siwach 9 months, 1 week ago

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Shiran Khan 9 months, 3 weeks ago

Your question is wrong because AC is already given

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Vaishnavi Chaudhary 10 months ago

Your answer is wrong cuz AC is already given in question

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A train travel a distance of 90kh at constant speed.Had the speed been 15km/hr more it would have taken 30min less for journey. Find the original speed

Posted by Priti Singh 10 months ago

CBSE > Class 10 > Mathematics

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The value of (12)^3x + (18)^3x ,x E N, end with the digit?

Posted by Topper Student 10 months ago

CBSE > Class 10 > Mathematics

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1+cotA+tanA/sec³A-cosec³A

Posted by Deepti Pandey 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Deepti Pandey 10 months ago

To prove that this is equal to sin²A.cos²A

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Find the sum of first 40 positive integer divisible by 6

Posted by Manaswi Singh 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Divyansh Kuntal 10 months ago

40/2 (2×6 +(40-1) ×6) =4920

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Swanand Gajkeshwar 10 months ago

4920

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Aap understand made up of a** in this shape of cuboid with four conical depression to hold pen and dimension of the keyboard are 15 CM by 10 cm by 3.5 CM the radius of is the depression is 0.5 cm and theft 1.4 cm find the volume of the good Indian

Posted by Pranshu Srivastava 9 months, 4 weeks ago

CBSE > Class 10 > Mathematics

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Across found a cylindrical vessel of base diameter 10 cm to drink water the vessel was 3/4th filled with water if the crow uses 50 spherical shaved stones of diameter 2 cm to take water up to the brim then find the height of the cylindrical vessel

Posted by Syed Haseeb 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Shubha Bm 9 months ago

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30/x-y + 44/x+y= 10

Posted by Akshra . 10 months ago

CBSE > Class 10 > Mathematics

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(2x/x-5)²+(2x/x-5)-24=0

Posted by Sanchita Devkar 10 months ago

CBSE > Class 10 > Mathematics

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If (x=2 sin² A) and (y=cos²A+1). Find the value of x+y.

Posted by Shreya Gupta 10 months ago

CBSE > Class 10 > Mathematics

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Jaya says,"since the radius of circle C⁴ is 3.5 times of the radius of circle C¹ the area occupied by circle C⁴ is 3.5 times the area occupied by circle C¹". Is Jaya correct ? Give reason

Posted by Md. Suhel 10 months ago

CBSE > Class 10 > Mathematics

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Can we draw a tangent from the radius to outside if the circle if not then what would we call that line produced from radius to outside of a circle

Posted by Suhaani .K 10 months ago

CBSE > Class 10 > Mathematics

0 answers

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Sin∅*cos∅

Posted by Kalua I 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Swanand Gajkeshwar 10 months ago

Let∅=30° sin30°×cos30° =√3/4

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Suhaani .K 10 months ago

Can a tangent be drawn from the radius of a circle to outside the circle if not then what would be call that line that is passing through radius to outside of the circle

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Check whether the following are quadratic equation (x+1)² = 2(x-3)

Posted by Mansi Musale 10 months ago

CBSE > Class 10 > Mathematics

3 answers

Dhanam Dhanamjaga 9 months, 3 weeks ago

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Swanand Gajkeshwar 10 months ago

Yes,the quadratic equation formed is x²-5=0

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Kalua I 10 months ago

Yes

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If two positive integers m and n are expressive in the form m is equal to PQ and n is equal to PQ square where PQ are prime numbers then HCF of m,n

Posted by Tanuja Parihar 10 months ago

CBSE > Class 10 > Mathematics

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in this given figure PQRS is a parallelogram t is a point on side PS such that the ratio of length of PT and TS is 2 ratio 5 prove that are RU upon PU is equal to 7 upon 2 if the line TQ and PR intersect at U

Posted by Nitika Dhull 10 months ago

CBSE > Class 10 > Mathematics

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Water is flowing at a rate of 15 km per hour through a pipe of diameter 14 cm into a cuboidal pond which is 50 M long and 44 m wide. In what time will the level of water in pond rise by 21 cm.what should be the speed of water if the rise of water level is to be attend in 1 hour

Posted by Mahitha Sai 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Ansh Ojha 10 months ago

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Vedansh. Agarwal 10 months ago

Volume of cylinder pipe = πr²h Given, diameter = 14 cm Radius = 7 cm 1 m = 100 cm Radius = 7/100 = 0.07 m Rate of flow = 15 km/hr 1 km = 1000 m Rate of flow = 15(1000) m/hr = 15000 m/hr Volume of water flowing through the cylindrical pipe in one hour = (22/7)(7)²(15) = (22/7)(0.07)²(15000) = 1617/7 = 231 m³ Volume of cuboidal pond = length × width × depth Given, length = 50 m Width = 44 m Depth = 21 cm 1 m = 100 cm Depth = 21/100 = 0.21 m Volume of pond = 50 × 44 × 0.21 = 462 m³ Now, time taken by the pipe to fill the pond with water to a height of 21 cm = volume of pond/volume of water flowing through the pipe in one hr = 462/231 = 2 hr Therefore, the time taken by the pipe to fill the pond with water upto 21 cm is 2 hours.

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A tent is in the shape of a cylinder surmounted by a conical top. if the height and radius of the cylindrical part or 3m and 14m respectively. Total height of a tent is 13.5 m. Find the area of the Canvas required for making a tent by keeping a provision of 26 cm ² of Canvas and stitching also. Find the cost of the Canvas to be purchased at the rate of 500 m ².

Posted by Mahitha Sai 10 months ago

CBSE > Class 10 > Mathematics

0 answers

ANSWER

Sin 60 +cos 60

Posted by Atish Dubey 10 months ago

CBSE > Class 10 > Mathematics

5 answers

Kashish Bhardwaj 9 months, 3 weeks ago

√3/2 + 1/2 = √3+1/2

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Tushar S 9 months, 4 weeks ago

√3+1/2

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Swanand Gajkeshwar 10 months ago

√3+1/2

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Sarbananda Biswal 10 months ago

√3+1/2

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Navya Agarwal 10 months ago

√3+1/2

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Prove that 2+3√5 is irrational ?

Posted by Ashim Baraily 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Ashim Baraily 10 months ago

Let us assume that 2+3√5 is rational Here 2+3√5 can be written in the form a/b where a and b is integers and q≠ 0 Where a and b is co prime 2+3√5 =a/b 3√5=a/b - 2/1 3√5= a -2b/3b √5 = a-2b/ 3b * this contradiction has axisen due to our wrong assumption that 2+3√5 is rational *so It is 2+3√5 is irrational.

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Product of a non zero rational and an irrational number is _______.

Posted by Bhupendra Kumar Singh 10 months ago

CBSE > Class 10 > Mathematics