Rahul earns rs4550 every month and spends rs 3640. Find his expenditure as percentage

Step-by-step explanation:

80%

step-by-step explanation:

Given,

Rahul's monthly earning = ₹ 4550

His monthly expenditure = ₹ 3640

.°. Expenditure as %

= (expenditure/earnings)×100 %

=> % Expenditure = (3640/4550)×100 %

=> % Expenditure = 0.8 × 100 %

=> % Expenditure = 80%

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8