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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 9051. |
If the quadratic equation x2 + 4x + k = 0 has real and equal roots, then |
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Answer» SolutionverifiedVerified by Topprx 2 −4x+k=0 is of the form ax 2 +bx+c=0 where a=1b=−4c=kRoots are equal⇒ Discriminant=0⇒b 2 −4ac=0⇒(−4) 2 −4×1×k=0⇒16−4k=0⇒−4k=−16∴k= 416\u200b =4Solve any question of Quadratic Equations with:- a=1,b=4,c=kd=b^2-4ac0=4^2-4×1×k0=16-4k-4k=-16k=16/4=4 |
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| 9052. |
Kya ch 14 maths me step derivation method deleted ha???? |
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Answer» Yes Nai Nai |
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| 9053. |
Find value of k, (k+1)X2+2(k-1)x+(k-2) |
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Answer» The given equation is (k+1)x 2 −2(k−1)x+1=0 comparing it with ax 2 +bx+c=0 we geta=(k+1),b=−2(k−1) and c=1∴ Discriminant,D=b 2 −4ac=4(k−1) 2 −4(k+1)×1=4(k 2 −2k+1)−4k−4⇒4k 2 −8k+4−4k−4=4k 2 −12kSince roots are real and equal, soD=0⇒4k 2 −12k=0⇒4k(k−3)=0⇒ either k=0 or k−3=0⇒4k(k−3)=0Hence, k=0,3. k=2 |
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| 9054. |
In the adjoining figure de parallel bc and all measurements are in centimetres find the length of ae |
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| 9055. |
All circles are similar or congruent |
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Answer» Circles are similar Similar All circle both similar and congruent is @alish saifi |
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| 9056. |
Which subject book have you Gaurav baswal |
| Answer» Who | |
| 9057. |
Anyone have oswaal book 2022 2023 |
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Answer» Which subject Yes |
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| 9058. |
What is a prim number? |
| Answer» Any number whose factor 1 and the number itself | |
| 9059. |
A plus b ka hole squire |
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Answer» (a-b)"2 +4ab (a+b)^2 = a^2+b^2+2ab |
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| 9060. |
Two pillars of height 70m and 20m |
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| 9061. |
Triangles chapter theorems |
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Answer» Maje samaj nahi aa raha hai Book me ha dekhlo .. |
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| 9062. |
The diameter of a wheel is 1.54m how far will it travel in 200 revolutions |
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| 9063. |
(Cosec+cot)²=sec theta+1/sec theta -1 |
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| 9064. |
What is pi ? Who is founder of pi ? What is use for pi ? All the value of pi till now . |
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Answer» What?..😂🤣😂😂 Aarush answer the question. What is pi ? Who is founder of pi ? What is use for pi ? All the value of pi till now .🤣 |
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| 9065. |
If one zero of a polynomial is given how to find another one |
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| 9066. |
8 chapter |
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Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. Ask me question |
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| 9067. |
Express each number as a product of its prime number |
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Answer» 248 This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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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| 9068. |
Prove that √5 is irrational no. |
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Answer» Google kar Sorry it\'s mistake in this answer by me ,Assume that √5 is a rational no. Let we assume that √5 is an irrational no.So,√5 =p/q where p and q both are co-prime integers and q≠0Hence,by squaring both the sides (√5)^2=p^2/q^25=p^2/q^2q^2=p^2/5(this show that 5 is a divisor of p^2 and p also)Let p =5a q^2=(5a)^2/5q^2=25a^2/5q^2=5a^2q^2/5=a^2(this show that 5 is a divisor of q^2 and q also)Hence ,5 is a divisor of p and q both This is because of our wrong assumption of taking √5 as rational no.Hence,√5 is an iraational no. We can use contradiction method You can get you answer in ncert book chapter no 1 easilyWe can assume that √5 is a rational no Then we can equate √ 5 as or in the form of P/q( where p and q are co prime ) means both no is not divisible by a single noSo ,√ 5=p/qSquaring on both sides(√5)²= (p/q)²5=(p)²/(q)²5/q²=p² |
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| 9069. |
Can anyone became my study partner ....? |
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Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. Yes This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. Just tell me how we can communicate Yes I can |
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| 9070. |
Find the factors of 2x²+x-300=0 |
| Answer» If you can\'t do it by factorisationYou can apply quadratic formula-b√b²-(4ac)/2a | |
| 9071. |
Triangles chapter all exercises notes |
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| 9072. |
Make a quadratic equation whose à |
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Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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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| 9073. |
77 ➗ 9654345226426π |
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| 9074. |
Find HCF and LCM of 8/10, 2/5, 4/6. |
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| 9075. |
7+6-4+ |
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Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. +9 +9 |
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| 9076. |
2+6- |
| Answer» -4 | |
| 9077. |
Prove1+secA/secA = sin2A/1-cosA |
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Answer» Very easy Sin30° Solve First LHS and then RHS Separately 1+secA / secA = sin2A /1-cosALHS =1+1/cosA .... sec A can be written as 1/cosA 1+1/cosA /1/cosA Then solve cosA +1 / cosA cos A + 1 /cosA ×cosA/1 Then , cosA and cosA cancel and it remain 1+cosA RHS = sin2A is 1- cosA Then 1- cos2A / cosA 1-cos2A is identity in 9th that is a (a - b ) 2 it is (a+b ) ( a - b ) Then, 1+ cosA × 1- cosA / 1- cos A 1- cosA 1- cos A cancel and it remain 1+ cosA Therefore LHS = RHS Hence , proved This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. Je |
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| 9078. |
Which term of AP 5,2,-1,.........is -49 |
| Answer» a=5d= -3 Using formula an =a+(n-1)d-49= 5+(n-1)-3-49-5=-3(n-1)-54=-3(n-1)-54/3=(n-1)18=(n-1)n=19 | |
| 9079. |
If 9=8, an=62, Sn=210. Find n and d |
| Answer» Using formula :Sn=n/2(2a(n-1)d) | |
| 9080. |
4x^2-4√3x+3=0 by factorisation |
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| 9081. |
find quaderaleteral formed by Points (3,0) (1,0) (0,2) (-3,2) |
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| 9082. |
If -2 is a zero of polynomial p(x) then which of the following is a factor of p( x) |
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Answer» Here is no option is given. its an mcq, state the options for ans |
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| 9083. |
Case based question of arithmetic progression |
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| 9084. |
Let p be aprime number.The quadratic equation having roots as a factor of p is |
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| 9085. |
What is the sum of the all angle of a triangle |
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Answer» 180° 180° 180° 180° 180 |
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| 9086. |
if 49x + 51y=,51x+49y then find value of x and y |
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| 9087. |
The multiplicative inverse of zero........................... a. 1b. 0c. Doesn\'t existd. 1/0 |
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Answer» Doesn\'t exist C. Doesn\'t exist Doesn\'t exist is a write answer 😇 |
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| 9088. |
What is the minimum interval between two consecutive calls according to table F of schedule 1 |
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| 9089. |
If 2Sin²Φ - cos²Φ= 2Then Φ =? |
| Answer» 90° | |
| 9090. |
If sinA =4/5, then the value of cosA is |
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Answer» 3/5 The answer is 3/5 3/5 |
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| 9091. |
If sin A=3/4, calculate cos A and tan A |
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Answer» No CosA=√7/4 TanA=3/√7 Sin A=3/4=P/HP=3 H=4Using PGTH^2= P^2+ B^2(4)^2= (3)^2+ B^216= 9+ B^216- 9= B^2√7= BB= √7Cos A= B/H= √7/4Tan A= P/B= 3/√7 |
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| 9092. |
x+3y=5 3x-y=5 Solve in graph |
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| 9093. |
Prove that if x and y are both odd positive integers then x2 +y2 is even but not divisble by 4 |
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| 9094. |
Find the zeroes of the polynomial x²+7x+10 |
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Answer» -5 and -2. X²+7x+10X²+5x+2x+10X(x+5)+2(x+5)(X+2) (x+5)X=-2,x=-5 -2 &-5 x^2+5x+2x+10x(x+5)+2(x+5)(x+5)(x+2)x=-5 x=-2 ex 12.1 Question 2 |
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| 9095. |
Basic proportionality therom |
| Answer» This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html Few rules to keep homework help section safe, clean and informative. 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. | |
| 9096. |
Find the distance of p (x, y) from the orgin |
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Answer» Hence, the distance of point P(x,y) from the origin is √x^2+y^2 √(x²+y² |
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| 9097. |
If one zeroes of polynomial (a^2+9) x^2+13x+16a in reciprocal of the other find the value of a |
| Answer» According to the question,\xa0one of the zeros is the reciprocal of the other,\xa0so, let us consider\xa0one zero to be x.Therefore, the other zero will be 1 / x, and the product of zeros will be 1.For any\xa0polynomial\xa0of the form ax2+ bx + c = 0,Sum of\xa0zeros\xa0= - b / aProduct of zeroes = c / aUsing these results for the equation given in the question (a2\xa0+ 9)x2\xa0+ 13x + 6a, we getThe product of zeros will be c / a = 6a / (a2+ 9) = 1⇒\xa0a2+ 9 = 6a⇒\xa0a2- 6a + 9 = 0 [rearranging terms]⇒\xa0a2\xa0– 3a – 3a + 9 = 0 [splitting middle term]⇒ a (a - 3) -3 (a - 3) = 0 [taking a as common in 1st two terms and - 3 as common in last two terms]⇒ (a - 3) (a - 3) = 0\xa0⇒\xa0a = 3 , 3Hence, the value of a is 3. | |
| 9098. |
Find X in term of a,b and c:a/x-a + b/x-b = 2c/x-c |
| Answer» Solution of this problem | |
| 9099. |
What are the coordinates of mid point of line joining the point (6,-2) and (4,8) |
| Answer» Coordinates of midpoint of segment joining (– 2, 6) and (8, 2) are\xa0(3, 4). | |
| 9100. |
Ex.5.2 |
| Answer» Which question | |