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Ask QuestionPosted by Tanvi Mundalik 6 years, 11 months ago
- 1 answers
Posted by Twinkle Jainism 6 years, 11 months ago
- 3 answers
Posted by Krishna Bansal 6 years, 11 months ago
- 1 answers
Yogita Ingle 6 years, 11 months ago
a = 114, d= -5
nth term = a+(n-1)d
according to the question we need to find a term so that :
a+(n-1)d < 0
114 + (n-1)(-5) < 0
114 -5n + 5 < 0
119 - 5n < 0
119 < 5n
23.8 < n
or we can say from 24th term all terms will be negative.
a24 = a + 23d
= 114 + 23( - 5 )
= 114 - 115
= -1 ( negative number )
Posted by Karthik Yadav 6 years, 11 months ago
- 1 answers
Posted by Rudra Abhishek Badatia 6 years, 11 months ago
- 3 answers
Posted by Manish11 Singh 5 years, 8 months ago
- 0 answers
Posted by Shyam Agarawal 6 years, 11 months ago
- 2 answers
Yogita Ingle 6 years, 11 months ago
Factorization is the process of decomposing an algebraic expression into a product of two or more factors
Posted by Dharam Pal 6 years, 11 months ago
- 1 answers
Posted by Mohit Rustagi 6 years, 11 months ago
- 1 answers
Kritima Singla 6 years, 11 months ago
Posted by Shubhankar Maity 6 years, 11 months ago
- 1 answers
Mayank Chaudhary 6 years, 11 months ago
Posted by Ripudaman Jadoun 6 years, 11 months ago
- 1 answers
Ram Kushwah 6 years, 11 months ago
In fist cuboid say a=40 ,b=60,c=50
SA=2(ab+BC+ca)
=2(40×60+60×50+50×40)
=2(2400+3000+2000)=2×7400=14800 cm2.....(1)
In 2nd cuboid a=b=c=50 this is a cube
SA=6a2=6×50×50=15000 cm2....(2)
So 1st one requires less material.
Posted by Zulekha Peshimam 6 years, 5 months ago
- 1 answers
Sia ? 6 years, 5 months ago
Let the present ages of Hari and Harry be 5x years and 7x years respectively.
Four years from now
Age of Hari = (5x + 4) years
Age of Harry = (7x + 4) years
According to the question,
{tex}\frac{{5x + 4}}{{7x + 4}} = \frac{3}{4}{/tex}
{tex}\left( {\frac{{5x + 4}}{{7x + 4}}} \right) \times (7x + 4) = \frac{3}{4} \times (7x + 4){/tex} . . . . [ Multiplying both sides by 7x + 4, we get ]
∴ {tex}5x + 4 = \frac{{3(7x + 4)}}{4}{/tex}
4(5x + 4) = 3(7x + 4) . . . . [ Multiplying both sides by 4, we get ]
∴ 20x + 16 = 21x + 12
∴ 16 – 12 = 21x – 20x
∴ 4 = x
∴ x = 4
∴ 5x = 5 × 4 = 20
and 7x = 7 × 4 = 28 hence, their present ages are 20 years and 28 years respectively.
Verification
{tex}20:28 = \frac{{20}}{{28}} = \frac{{20 \div 4}}{{28 \div 4}} = \frac{5}{7} = 5:7{/tex}
20 + 4 = 24
28 + 4 = 32
{tex}24:32 = \frac{{24}}{{32}} = \frac{{24 \div 8}}{{32 \div 8}} = \frac{3}{4} = 3:4{/tex} hence, the result is verified.
Posted by Rudra T 6 years, 11 months ago
- 6 answers
Divyanshu Singh 6 years, 11 months ago
Posted by Siddhi Gahlot 6 years, 11 months ago
- 2 answers
Yogita Ingle 6 years, 11 months ago
(a - b)(a +b) = a2 - b2
10.5 × 9.5 = (10+ 0.5) (10 - 0.5)
= (10)2 - (0.5)2
= 100 - 0.25
= 99.75
Navya Sree 6 years, 11 months ago
Posted by Karan Bulani 6 years, 11 months ago
- 1 answers
Yogita Ingle 6 years, 11 months ago
A pyramid on a triangular base is called a tetrahedron. In other words, a tetrahedron is a solid bounded by four triangular faces. Evidently a tetrahedron is a triangular pyramid. If the base of a tetrahedron is an equilateral triangle and the other triangular faces are isosceles triangles then it is called a right tetrahedron.
Posted by Tushar Sharma 6 years, 11 months ago
- 0 answers
Posted by Ashish Tirkey 6 years, 5 months ago
- 1 answers
Sia ? 6 years, 5 months ago
Let the length of the model ship be x m and the height of the mast be y cm.
We form a table as shown below :
|
Length of the |
28 |
x |
|
Height of the |
12 |
9 |
More the length of the ship, more would be the length of its mast. Hence, this is a case of direct proportion. That is,
{tex}\frac{{{x_1}}}{{{y_1}}} = \frac{{{x_2}}}{{{y_2}}}{/tex}
{tex}\therefore{/tex} {tex}\frac{{28}}{{12}} = \frac{x}{9}{/tex}
{tex}\therefore{/tex} 12x = 28 × 9
{tex}x = \frac{{12 \times 9}}{{12}}{/tex}
{tex}\therefore{/tex} x = 21
Hence, the length of the model ship is 21 m.
Posted by Rajbala Rajbala 6 years, 11 months ago
- 1 answers
Posted by Parth Sharma 6 years, 11 months ago
- 2 answers
Divya Garg 6 years, 11 months ago
Anjana S. Nair 6 years, 11 months ago
Posted by Arwa Painter 6 years, 11 months ago
- 0 answers
Posted by Rohini Maddheshiya 6 years, 11 months ago
- 2 answers
Posted by Prince Beniwal 6 years, 11 months ago
- 0 answers
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Rahul Choudhary 6 years, 11 months ago
1Thank You