Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 8 Answered

One number is 7 more than another and it's square is 77 more than the square of the smaller number. What are the numbers?  
Asked by ritikap.sen21 | 12 Dec, 2018, 07:04: PM
answered-by-expert Expert Answer
If one number is x, then another number (x+7)
Square of bigger number is 77 less than the square of smaller number.
 
(x+7)2 = x2
x2 + 14x + 49 = x2+77
14x + 49 = 77
14x = 28  or x=2
 
Hence two numbers are 2 and 9
Answered by Thiyagarajan K | 12 Dec, 2018, 10:03: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 8 - Maths
1) Number of sides of regular polygon with an interior angle 150 is _______ 2)  Interior angle of a regular polygon with 20 sides is ____
Asked by biswajitpatel88 | 10 May, 2024, 10:49: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
1) Number of sides of regular polygon with an interior angle 150 is _______ 2)  Interior angle of a regular polygon with 20 sides is ____
Asked by biswajitpatel88 | 10 May, 2024, 10:49: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
I have a doubt how to solve this question.
question image
Asked by seemachaubey1987 | 05 May, 2024, 09:41: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
multiply and verify the result for the given values a. (8a+7b) (64a²–ab+b²): a= 1,b= –2
question image
Asked by ptech3383 | 04 May, 2024, 06:10: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
The four integers consecutively lower than 81 ,and the four consecutively higher than 81are added together . this sum is divisible by
Asked by sarkarchaitali4001 | 02 May, 2024, 04:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
A sum of 190 is divided between X, Y and Z. Y got 15 more than X and Z got 19 more than Y. Find each one's share. 8
question image
Asked by jaiswal445512 | 01 May, 2024, 05:42: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
912,303,102,33,?,3,2
Asked by jigmetyangchen13 | 28 Apr, 2024, 02:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
x^2-x-240
Asked by kalpana3821 | 28 Apr, 2024, 06:48: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
3m-9=4x-9/2+5x/7
question image
Asked by chauhannaman12b | 25 Apr, 2024, 09:33: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 8 - Maths
9/16×4/12) +9/10×-3/9
Asked by gk9941740 | 23 Apr, 2024, 05:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×