Question

find question 11 fast........​

Answer 1

Step-by-step explanation:

Let the numbers be 2x,3x,4x.

We know that,

The total summation of the number =0.334125

A/p

2x+3x+4x=0.334125

=>9x=0.334125

=>x= 0.334125/9

=>x=0.037125

The numbers are 0.07425,0.11375,0.1485.

Answer 2

QUESTION :-

Three numbers are to one another 2 : 3 : 4 : The sum of their cubes is 0.334125. Find the numbers.

ANSWER :-

2x = 0.3

3x = 0.45

4x = 0.6

SOLUTION :-

Let the three numbers be a , b and c.

let 2 : 3 : 4 = 2x , 3x , 4x

The sum of cube of these three numbers → 0.334125

$⟹ \tt {a}^{3} + {b}^{3} + {c}^{3 } = 0.334125$

$⟹\tt {8x}^{3} + {27x}^{3} + {64x}^{3 } = 0.334125$

$⟹\tt {99x}^{3} = 0.334125$

$⟹\tt {x}^{3} = \dfrac{0.334125}{99}$

$⟹\tt {x}^{3} = \dfrac{334125}{99000000}$

$⟹\tt {x}^{3} = \dfrac{3375}{1000000}$

$⟹\tt {x} = \dfrac{ \sqrt[3]{3375} }{100}$

$⟹\tt {x} = \dfrac{15}{100}$

$⟹\tt {x} = 0.15$

1st number = 2x = 2 × 0.15 = 0.3

2nd number = 3x = 3 × 0.15 = 0.45

3rd number = 4x = 4 × 0.15 = 0.6