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4x-5y=140 2x-10y=-80 Find the value of x and y

Posted by Miss Anshi 2 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Miss Anshi 2 years, 1 month ago

Thanks

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Sowmiya M 2 years, 1 month ago

X is 60 and Y is 20

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Sowmiya M 2 years, 1 month ago

X = 60 and Y = 29

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Sahil Ansari 2 years, 1 month ago

4x-5y=140....(1) 2x-10y= -80 =} 2(x-5y) = -80 =}x-5y = -40.....(2) Subtract euation 1 and 2, 4x-5y=140 x-5y= -40 ------------------ 3x=180 x=60 Putting x=60 in 2, 60-5y =-40 -5y = - 40 -60 -5y=-100 y= 20

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A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a location. Find the mean number of plants per house.

Posted by Vanshika Jasrotia 2 years, 1 month ago

CBSE > Class 10 > Mathematics

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Type of polynomial

Posted by Kaustubh Sharma 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Miss Anshi 2 years, 1 month ago

Zero Polynomial. It does not have a variable. ... Linear Polynomial. The degree of a linear polynomial is 1. ... Quadratic Polynomial. Quadratic polynomials are the types of polynomials with degree 2. ... Cubic Polynomial. ... Monomials. ... Binomials. ... Trinomial. ... Four-term Polynomial or Quadrinomial.

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Kx2-2x-3=0. {alpha +beta =2*alpha*beta} find the value of K.

Posted by Sanjay Katara 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Shraddha Bhawarkar 2 years, 1 month ago

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On MG road 3 consecutive traffic lightd after 36 ,42, 72 and seconds. If the lights are first switched on as 9:00 a.m., at what time will that they change simultaneously?

Posted by Aditya Roy 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Lucky Rajpoot 2 years, 1 month ago

The next change will be at 9:08:24. The traffic lights at three different road crossings change after every 48 seconds, 72 seconds and 108 seconds respectively.

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Number of tangents to a circle which are parallel to a secant are?

Posted by Aditya Roy 2 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Bhuvaneshwari Shivapur 2 years, 1 month ago

There are only 2 possible tangents to a circle which are parallel to a secant.

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Aditya Kumar 2 years, 1 month ago

Only 2 are possible Thank You.

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Find the diameter of the circle whose area is equal to the sum of the areas of two circles of diameter 20 cm and 48 CM

Posted by Aditya Roy 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Ishta Mahour 2 years, 1 month ago

52 cm

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If one root of the equation a x'2 +bx + c =0, is three times the other, than b'2 , is equal to

Posted by Parneet Ghuman Parneet 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Aditya Roy 2 years, 1 month ago

I think 3

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What is cord

Posted by Abhijeet Yadav 2 years, 1 month ago

CBSE > Class 10 > Mathematics

3 answers

Dekisuki Nobi 2 years, 1 month ago

A line in circle like a diameter but it is not from center of circle is known as cord

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Sharma Ji 2 years, 1 month ago

A cord is a line segment who intersect circle at two points

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Suryesh Kumar 2 years, 1 month ago

A cord is line segment who touches the circle at two distinct points with its two ends .

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Sin A=1

Posted by Nivedita Verma 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Rahul Sah 2 years, 1 month ago

Sin90 degrees

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A quadilateral ABCD circumscibes a circle show that AB+AD=BC+AC

Posted by Harman Ghumman 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

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A rectangular field is 16m long and 10m wide. There is a path of uniform width all around it having an area of 120 sq.m, then the width of the path is

Posted by Akash Gupta 2 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Dhurvesh Dhake 2 years, 1 month ago

A rectangular field is 16m long and 10m wide. There is a path of uniform width all around it having an area of 120 sq.m, then the width of the path is

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Akash Gupta 2 years, 1 month ago

A rectangular field is 16m long and 10m wide. There is a path of uniform width all around it having an area of 120 sq.m, then the width of the path is

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I want the answer sheet of sample paper of maths

Posted by Account Deleted 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Miss Anshi 2 years, 1 month ago

Not possible

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Cos y is 0 than 1/2cosy/2

Posted by Arvind Mishra 2 years, 1 month ago

CBSE > Class 10 > Mathematics

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triangle, ABC, the triangle bisector of the angle A meets BC at D. If AB = 4, AC = 3 and A = 60o, then length of AD is:

Posted by Garv Rathee 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Sharma Ji 2 years, 1 month ago

12√3

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Lcm of 270

Posted by Nagabhushan. S Babu 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Krishna Singh 2 years, 1 month ago

3×3×3×2×5

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A floor designed is made by 2 dimensional geometrical figures as shown on coordinates axes

Posted by Dzd Ded 2 years, 1 month ago

CBSE > Class 10 > Mathematics

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The probability of rotten apple randomly from a heap of 900 apples is 0.18 what is the number of rotten apples 8n the heap

Posted by Abdul Gani Gani 2 years, 1 month ago

CBSE > Class 10 > Mathematics

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LCM is 9 and HCF is 27, one integer is 81 find another

Posted by Lohit Ainakar 2 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Krishna Singh 2 years, 1 month ago

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Aditya Roy 2 years, 1 month ago

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Lovenish Mittal 2 years, 1 month ago

LCM*HCF=P1*P2 9*27=81*P2 P2=3

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Ritesh Sharma 2 years, 1 month ago

Other integer is 3

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Is this neccesary to turn the data into exclusive form . Why ?

Posted by Suryesh Kumar 2 years, 1 month ago

CBSE > Class 10 > Mathematics

2 answers

Suryesh Kumar 2 years, 1 month ago

Is this neccesary to turn the data into exclusive form to find the mean . Why ?

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Suryesh Kumar 2 years, 1 month ago

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Currency is a medium of exchange for goods and services. Ashok made a payment to shopkeeper, for the article he purchased, in the denomination of ₹500 and 20. He paid 2640 to the shopkeeper. If all the denomination of * 500 is to be changed by 100 then the boy could have paid * 640 only. Assume the number of currency notes of 500 as 'f' and the number of currency notes of 20 as 'g'". Based on the above information, answer the following questions: i) Write a linear equation representing the amount paid by Ashok. 1 ii) If Ashok had to pay * 2800 to the shopkeeper, how many *20 notes did he need? 1 iii) Find the number of notes in the denomination of ₹500 Ashok had? OR How many total currency notes did Ashok gave to shopkeeper?

Posted by Manas Maurya 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Suryesh Kumar 2 years, 1 month ago

(¡) 5f + 7g = 2640 (¡¡) 15 (¡¡¡) 5 , or , 12

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

Posted by Nitin Kumar 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Ritesh Sharma 2 years, 1 month ago

Where is the figure

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What is formula of step deviation in statistics class 10

Posted by Jeet Singh 2 years, 1 month ago

CBSE > Class 10 > Mathematics

4 answers

Gurjot Kaur 2 years, 1 month ago

Mean= a + [∑fiui/∑fi ]×h

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Anurag Singh 2 years, 1 month ago

a+sigmafiui/sigmafi

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Chinmayi P P 2 years, 1 month ago

Mean =a + fiui/fi × h

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Jeet Singh 2 years, 1 month ago

Mean = a + fiui/fi × h

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Find the nature of roots of root3xsquare-root7x+3root3

Posted by Sangmesh Patil 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Abhishek Choudhury 2 years, 1 month ago

In this case, a = √3, b = -√7, and c = 3√3. Substituting these values in the formula, we get: b² - 4ac = (-√7)² - 4(√3)(3√3) = 7 - 36 = -29 < 0 So, there are no real roots for the given equation

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In given figure DE parallel BC , if ad=2cm ,bd=2.5cm, ae=3.2cm. Find ac

Posted by Aayush Verma 2 years, 1 month ago

CBSE > Class 10 > Mathematics

1 answers

Abhishek Choudhury 2 years, 1 month ago

In Triangle ADE and ABC, AD=2 BD=2.5 AE=3.2 DE ll BC, ∴∠ADE=∠ABC ( corresponding angles) ∠AED=∠ACB ( corresponding angles) ∠BAC is common Δ ADE is similar to Δ ABC In similar triangles, we know that the ratio of corresponding sides is equal ∴ AB/AD=AC/AE (AD+BD)/AD = AC/AE (2+2.5)/2=AC/3.2 4.5/2=AC/3.2 ( 4.5×3.2)/2= AC 7.2=AC Hence the value of AC is 7.2

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In parallelogram ABCD bisector of angle A and b intersect each other at all the value of angle aob is

Posted by Manasi Manasi 2 years, 1 month ago

CBSE > Class 10 > Mathematics

0 answers

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How to find modal class upper limit

Posted by Sneha Gupta 2 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Sankalp Dinesh 2 years, 2 months ago

First find the modal class that is the class with highest frequency and so it's upper limit is the class's upper value.

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Sneha Gupta 2 years, 2 months ago

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Udayraj Singh Chouhan

Posted by Udayraj Chouhan 2 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Sankalp Dinesh 2 years, 2 months ago

???¿???

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Please send me homework

Posted by Ayush Kumar 2 years, 2 months ago

CBSE > Class 10 > Mathematics

3 answers

Miss Anshi 2 years, 1 month ago

😂

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Sankalp Dinesh 2 years, 2 months ago

Which homework???

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Great Great 2 years, 1 month ago

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

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Find the 11th term of the AP (5a-x), 6a, (7a+x)

Posted by Dhyey Soni 2 years, 2 months ago

CBSE > Class 10 > Mathematics

2 answers

Suryesh Kumar 2 years, 1 month ago

Given , AP=(5a-x),(6a),(7a+x) Here , A = 5a-x T¹=5a-x , T ²=6a, T³=7a+ x, D = T²-T¹ => D = 6a - (5a-x) => D= 6a - 5a+ x => D = a + x Now , T ^n = A+ (n-1)D => T ¹¹= A + (11-1)D => T ¹¹ = (5a-x) +10 (a+x) => T ¹¹ = 5a-x + 10a + 10x => T ¹¹ = 10a + 5a +10x - x => T ¹¹ = 15a + 9x Hence the 11th term of this AP is 15a + 9x

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Shubhank Mittal 2 years, 2 months ago

Given, a=( 5a-x) d=a2-a1 6a-(5a-x) 6a-5a+x a+x an =a+(n-1)d a11= 5a-x+(11-1)a+x 5a-x+(10) a+x 5a-x+ 10a +10x 15a+9x answer

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