An inequality is used when the exact value of the variable
is not determined. Using the rules of inequality, we let the number cc be equal
to x and 14 will be preceded by a less than sign. Hence, we can the word
sentence as x – 3.4 < 14.
10x^2 - 25 = x^2
Take the square root of each side.

x = 10x - 5i
Answer:
990 cm²
Step-by-step explanation:
Given ratio of radii = a : b , then
ratio of areas = a² : b²
Here
ratio of radii = 50 : 30 = 5 : 3 , then
ratio of areas = 5² : 3² = 25 : 9
let x be the area of sector DEF , then using proportion
=
← 
cross- multiply
25x = 24750 ( divide both sides by 25 )
x = 990
Area of sector DEF = 990 cm²