Answer:
20x + 13
Step-by-step explanation:
5(4x + 3) - 2
5× 4x + 5×3 - 2
20x + 15 - 2
20x + 13
(2x+2)(10x^2 - 6x + 8) =
2x(10x^2 - 6x + 8) + 2(10x^2 - 6x + 8) =
20x^3 - 12x^2 + 16x + 20x^2 - 12x + 16 =
20x^3 + 8x^2 + 4x + 16 <==
Answer:The height of the building which caste a shadow 20.5 m in length is 17.5 m.
Step-by-step explanation:
Given : At a particular time of a day, a 7 high flagstaff castes a shadow which is 8.2 m long.
To find : What is the height of the building which castes a shadow 20.5 meters in length at the same moment?
Solution :
A 7 high flagstaff castes a shadow which is 8.2 m long.
i.e. Shadow of length 8.2 m = 7 m
The shadow of length 1 m = m
The shadow of length 20.5 m = m
The shadow of length 20.5 m = 17.5 m
Therefore, The height of the building which caste a shadow 20.5 m in length is 17.5 m.
Answer:
yes it is true that a linear system of three equations with two variables is inconsistent because when we solve the equations variables can be obtained by only first two equations which are considered first. and third equation is useless.
