Question

Write an equation for the following statements.
1. The price P of a dressed chicken is directly proportional to its weight W in kilograms.

2. The cost of electrical bill E is directly proportional to the appliances A used in the house.

3. The area A of a circle varies directly as the square of its radius r.

4. m is proportional to the cube root of n.

5. y varies directly as the square of the difference of a and b.

6. T is inversely proportional to the square root of k.

7. d varies inversely as the square root of k.

8. N is inversely proportional to the cube root of M.

9. The number of pizza slices p varies inversely as the number of persons n sharing a whole pizza.

10. The number of persons n needed to do a job varies inversely as the number of days d to finish the job.​

Answer 1

Answer:

Good Morning

Step-by-step explanation:

Good Morning

Answer 2

Given :- $(\frac{11}{12x} - \frac{14}{20y} ) { }^{2}$

To Find :- $(\frac{11}{12x} - \frac{14}{20y} ) { }^{2}$

Solution :-

We know that, (a - b) ² = a² - 2ab + b²

$(\frac{11}{12x} - \frac{14}{20y} ) { }^{2} = ( \frac{11}{12x} ) {}^{2} - 2( \frac{11}{12x} )( \frac{14}{20y} + ( \frac{14}{20y} ) {}^{2}$

$\frac{121}{144x {}^{2} } - \frac{154}{120xy} + \frac{196}{400y {}^{2} }$

$= \frac{121}{144x {}^{2} } - \frac{77}{60xy} + \frac{49}{100y {}^{2} }$

Hence, the product of $(\frac{11}{12x} - \frac{14}{20y} ) { }^{2}$ = $\frac{121}{144x {}^{2} } - \frac{77}{60xy} + \frac{49}{100y {}^{2} }$

Hence, the final answer is $= \frac{121}{144x {}^{2} } - \frac{77}{60xy} + \frac{49}{100y {}^{2} }$