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Ask QuestionPosted by Charu D 5 years, 1 month ago
- 4 answers
Posted by Maitreyee Dawle 5 years, 1 month ago
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Shubham Kumar 5 years, 1 month ago
Posted by Yogita Gamer 5 years, 1 month ago
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Sourav Keshri 5 years, 1 month ago
Posted by Dev Raj 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
We know that the largest 5 digit number is 99999.
So here we can see that 99999 is not a perfect square as it leaves 143 as the remainder while finding it s square root.
So for finding 5 digit perfect square we will have to subtract 143 from 99999
=> 99999-143 = 99856
Hence 99856 is a perfect square whose square root is √99856 = 316.
Posted by Pranav Pranav 5 years, 1 month ago
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Posted by Tarak Op 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
we know that if there is no solution then lines must be parallel and if lines are parallel than
≠ c1/c2
so,a1/a2=3/6= 1/2
b1/b2=1 / k
now
so k=2
Posted by Vaibhav Sharma 5 years, 1 month ago
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Spoorti Shrinivas 5 years, 1 month ago
Jobanjot Kaur 5 years, 1 month ago
Shuvendu Kumar 5 years, 1 month ago
Harshali Vilhekar 5 years, 1 month ago
Posted by Ajay Kartikay Bansal 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
In figure, a circle touches all the four sides of a quadrilateral ABCD/ whose sides AB = 6 cm, BC = 7 cm and CD = 4 cm. Find AD.
Since, length of two tangents drawn from an external point of circle are equal.
So, AP = AS
BP = BQ DR = DS
and RC = CQ
Adding all, we get
(AP + BP) + (DR + RC) = AS + BQ + DS + CQ
⇒ (AP + BP) + (DR + RC)
= (AS + DS) + (BQ + CQ)
⇒ AB + DC = AD + BC
⇒ 6 + 4 = AD + 7
⇒ 10 = AD + 7
AD = 10 – 7 = 3 cm
Hence, AD = 3 cm.
Posted by Itz Raman Here ☺ 5 years, 1 month ago
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Posted by Yashraj Ahirwar 5 years, 1 month ago
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Bhai Se Sikho Sikho 5 years, 1 month ago
Nisha???????? Bharti 5 years, 1 month ago
Posted by Gourahari Meher 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
6 = 21 × 31
20 = 22 × 51
LCM(6,20) = 22 × 31 × 51
LCM(6,20) = 60
Posted by Khushdeep Kaur 5 years, 1 month ago
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Yogita Ingle 5 years, 1 month ago
The common point of a tangent to a circle and the circle is called___
Point of contact
Posted by Ok Wahsi 5 years, 1 month ago
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Posted by Ok Wahsi 5 years, 1 month ago
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Maniya Jain 5 years, 1 month ago
Yogita Ingle 5 years, 1 month ago
2x - y = 2
y = 2x - 2 ...(1)
x + 3y = 15 ...(2)
Substituting the value of y from (1) in (2), we get,
x + 6x - 6 = 15
7x = 21
x = 3
From (1),
y = 2 
3 - 2 = 4
Posted by Ok Wahsi 5 years, 1 month ago
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Posted by Ok Wahsi 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
Given, the capacity of 1st tank =850 liters
And the capacity of 2nd tank= 680 liters
Now, the maximum capacity of a container which can measure the kerosene oil of both the
tankers when used an exact no.of times = HCF of 850 and 680
850 = 2 * 5 * 5 * 17
680 = 2 * 2 * 2 * 5 * 17
HCF(850, 680) = 2 * 5 * 17 = 170
Hence, the container which can measure petrol of either tank exactly must be of 170
liters.
Posted by Mehfooz Ali 5 years, 1 month ago
- 4 answers
Posted by Ok Wahsi 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
We have been given, x2 - 2x + 1 = 0
Now we also know that for an equation ax2 + bx + c = 0, the discriminant is given by the following equation:
D = b2 - 4ac
Now, according to the equation given to us, we have,a = 1, b = -2 and c = 1.
Therefore, the discriminant is given as,
D = (-2)2 - 4(1)(1)
= 4 - 4
= 0
Since, in order for a quadratic equation to have real roots, D ≥ 0.Here we find that the equation satisfies this condition, hence it has real and equal roots.
Now, the roots of an equation is given by the following equation,
x=-b± underroot D / 2a
Therefore, the roots of the equation are given as follows,
x=-(-2)±0 / 2(1)
=2 / 2
= 1
Therefore, the roots of the equation are real and equal and its value is 1.
Posted by Anuj Yadav 5 years, 1 month ago
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Posted by Ok Wahsi 5 years, 1 month ago
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Simran Shira 5 years, 1 month ago
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Posted by Harshit Yadav Harshit Yadav 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
2. A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree.
Solution:
Using given instructions, draw a figure. Let AC be the broken part of the tree. Angle C = 30°
BC = 8 m
To Find: Height of the tree, which is AB
From figure: Total height of the tree is the sum of AB and AC i.e. AB+AC
In right ΔABC,
Using Cosine and tangent angles,
cos 30° = BC/AC
We know that, cos 30° = √3/2
√3/2 = 8/AC
AC = 16/√3 …(1)
Also,
tan 30° = AB/BC
1/√3 = AB/8
AB = 8/√3 ….(2)
Therefore, total height of the tree = AB + AC = 16/√3 + 8/√3 = 24/√3 = 8√3 m.
Posted by Saranam Naga Dhathri 5 years, 1 month ago
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Sushruth H 5 years, 1 month ago
Sushruth H 5 years, 1 month ago
Posted by Saranam Naga Dhathri 5 years, 1 month ago
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Parul Ailawadi 5 years, 1 month ago
Posted by Gourav Richa Richa 5 years, 1 month ago
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Gaurav Seth 5 years, 1 month ago
(iv) Meena went to a bank to withdraw Rs.2000. She asked the cashier to give her Rs.50 and Rs.100 notes only. Meena got 25 notes in all. Find how many notes of Rs.50 and Rs.100 she received.
Solution:
Let the number of Rs.50 notes be A and the number of Rs.100 notes be B
According to the given information,
A + B = 25 ……………………………………………………………………….. (i)
50A + 100B = 2000 ………………………………………………………………(ii)
When equation (i) is multiplied with (ii) we get,
50A + 50B = 1250 …………………………………………………………………..(iii)
Subtracting the equation (iii) from the equation (ii) we get,
50B = 750
B = 15
Substituting in the equation (i) we get,
A = 10
Hence, Manna has 10 notes of Rs.50 and 15 notes of Rs.100.
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